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Tuesday, December 9, 2008

Audi R8

Audi R8





The Audi R8 is a mid-engined sports car introduced by the German automaker Audi in 2007.

The first appearance of the car was in 2006, appearing at auto shows and events all over the world. The R8 is based on the Lamborghini Gallardo platform, as Audi has full ownership of subsidiary Lamborghini S.p.A..

Audi announced in 2005 that the name of the successful Audi R8 race car would be used for a new road car in 2007, the Audi R8, based on the Audi Le Mans quattro concept car, appearing at the 2003 Geneva Auto Show and 2003 International Motor Show. The R8 was officially launched at the Paris Auto Show on 30 September 2006. There is some confusion with the name, which the car shares with the Le Mans winning R8 LMP and also the 1989 Mk 11 Rover 200, codenamed R8.

The Audi R8 is equipped with a 4.2 litre Fuel Stratified Injection (FSI) V8 engine developing 420 PS (309 kW/414 hp) and 430 N·m (320 ft·lbf), and is basically the same engine used in the B7 Audi RS4, but modified to use dry sump lubrication. A variant with a 5.2 litre Fuel Stratified Injection (FSI) V10 engine was added on the 9th of December 2008, which produces 386 kW (525 PS/518 hp) and 530 N·m (390 ft·lbf).

The transmission is either a manual gearbox with metal gate for the shift lever, or an "R-tronic" gearbox (single-clutch semi-automatic sequential manual transmission). These options are the same as those available on the Lamborghini Gallardo. A double-clutch gearbox (Direct-Shift Gearbox - DSG, now badged by Audi as "S-tronic") is not currently (as of December 2008) available.

The R8 has a dry weight of 1560 kg (3439 lb). Its suspension utilizes magneto rheological dampers.

As Audi AG owns Lamborghini (Automobili Lamborghini S.p.A.), 15% of the R8 is shared with the Lamborghini Gallardo, including the transmission and chassis. The R8 is made distinct by its exterior styling, cabin, engine, and pricing.

Safety features include Bosch ESP 8.0 Electronic Stability Programme with ABS, front dual-stage airbags, and side-impact airbags.

Amongst the options list for the Audi R8 are a Bang & Olufsen sound system, and "Audi Ceramic" Carbon fibre-reinforced Silicon Carbide (C/SiC) composite brakes with monobloc alloy Brembo calipers on all four wheels (6-piston at front, 4-piston at rear) with SGL Carbon ceramic discs.

Production

In the production of the Audi R8, 70 workers fit 5000 unique parts by hand - the factory produces 15 cars a day. It has also been credited as the only car in the world to undergo a CT Scan. Ninety-five lasers inspect the entire car in 5 seconds, to ensure that over 220 measurements are within 0.1 mm of the programmed plans. The 2-seat coupé is currently available in Europe as well as the USA, Canada and Japan. In addition, an open-top roadster, Porsche Carrera GT-like model is rumored to follow in 2009.

Reviews

Many publications were hailing it as the first car to truly be able to beat the Porsche 911 — considered by many to be one of the best sports cars ever made, and the leader in its class. Initial comparison tests have proven quite positive in this respect; Evo Magazine listed it as a "supercar", compared the R8 to the Porsche 911 Carrera 4S, Aston Martin V8 Vantage, and BMW M6 and after praising the R8's "amazing stability, traction and grip, unparalleled steering accuracy and bite, (and) its uncannily flat and disturbance-free ride", claimed that as a result of "the sublime effortlessness of it all", the Audi is a better sports car. The article concluded that "Audi humbles Porsche. A new dawn starts today".

Hennessey an American Tuning firm created a package for the Audi R8 with 700HP.It is currently available for 2008.

Other publications have also written similar reviews of the Audi beating the Porsche in comparison tests.

Top Gear compared the Nissan GT-R to the R8, and remarked that the R8 was "simultaneously less impressive and yet somehow more involving". On the R8 they wrote that "it rewards driver input", calling it "fantastic in a way that will appeal more to true car enthusiasts" but also remarked that it was "much slower" and the Nissan GTR was cheaper. On their test track, the car performed better than a Lamborghini Gallardo and an Aston Martin DB9.

On Bedford Autodrome, tested by Evo Magazine, the R8 was faster than the Lamborghini Gallardo and the Koenigsegg CCX.

Audi TT

Audi TT





A preview of the second-generation TT was provided in the form of the Audi Shooting Brake concept car, shown at the Tokyo Motor Show in 2005. This concept was based on the new TT, but featured angular styling and a "shooting brake" 2-door hatchback body style.

Audi revealed the second-generation TT, internal designation Typ 8J, on April 6, 2006. It is constructed of aluminium in the front, and steel in the rear, to enhance its balance and is available in front- or four-wheel drive. The production car uses either the 3.2 L VR6 engine, with 250 PS (184 kW), or a 200 PS (147 kW) version of Audi's direct injection 2.0 L four. Better known as FSI, Fuel Stratified Injection, the technology was derived from the Le Mans race cars, and offers improved fuel efficiency as well as an increased power output. A 6-speed manual transmission is standard, with the Direct-Shift Gearbox (DSG) as an option, and quattro four-wheel drive is standard with the VR6.

Audi's new active suspension, Audi Magnetic Ride, is available as an option, and is based on Delphi's MagneRide magneto rheological dampers (which means that the suspension will automatically adjust depending on the current road conditions). The new TT also features an improved rear spoiler that automatically extends at speeds greater than 120 km/h (75 mph), and retracts again at 80 km/h (50 mph). The spoiler can also be manually controlled by the driver via a switch on the dash. It is again offered as a 2+2 coupé and as a roadster.

Audi S8

Audi S8






In the last quarter of 2005, Audi introduced the latest Typ 4E S8 5.2 FSI quattro, based on its Volkswagen Group D3 platform stablemate, the Audi A8.

Audi's factory performance claims for the V10 S8 indicate a 0-100 km/h (62 mph) time of 5.1 seconds (whilst consuming "SuperPlus" / "EuroSuper" 98RON unleaded petrol). This places the S8 in a competitive range with the Mercedes-Benz S63 AMG and S600 (powered by a twin-turbo V12), the BMW 760Li (powered by a naturally-aspirated 12-cylinder engine), and the company's own A8L W12. Top speed is electronically limited to 250 km/h (160 mph).

Powertrain

This latest D3 S8 is powered by an all aluminium alloy 5,204 cc (317.6 cu in) Fuel Stratified Injection (FSI) 40-valve 90° V10 petrol engine, derived from the Lamborghini Gallardo 5.0 litre V10. A longer stroke and wider bore increases the displacement of the engine, and produces more torque at lower revs, making it more suitable for the larger and heavier Audi. It has been retuned to produce 331 kW (450 PS/444 bhp) at 7000 rpm and 540 N·m (400 ft·lbf) of torque at 3500 rpm. It utilises twin chain-driven double overhead camshafts (DOHC), and variable valve timing for both intake and exhaust valves. Engine management is by way of Bosch Motronic MED 9.1 engine control unit, which controls the mapped direct ignition, ten individual spark coils, common rail cylinder-direct sequential mulit-point fuel injection, and drive by wire throttle.

A sports-optimised six-speed tiptronic automatic transmission (gear ratios - 1st: 4.171, 2nd: 2.340, 3rd: 1.521, 4th: 1.143, 5th: 0.867, 6th: 0.691) with "Dynamic Shift Programme" (DSP) and "sport" mode, with steering wheel mounted paddle-shifters, is the only offering. Output is transmitted via the trademark quattro permanent four-wheel drive system, initially using the Torsen T-2 50:50 dynamic centre differential, and from 2008 model year, utilising the latest Torsen T-3 asymmetric dynamic centre differential, with a 'default' torque distribution of 40% to the front axle and 60% to the rear. Final drive ratio is 4.055, and is assisted with Audi's "Electronic Differential Lock" (EDL).

Suspension, steering, brakes, tyres

The S8, like its related A8 utilises a multi-link suspension layout front and rear, with pressurised air springs. However, for the S8, the effective spring and damper rates are noticeably firmer, along with re-engineered suspension mounts. "Servotronic" speed-dependent power assisted rack and pinion steering point the S8 in the desired trajectory.

The brake system consists of radially ventilated discs all round, the fronts sized at 386 mm (15.2 in) in diameter by 36 mm (1.42 in) thick, and the rears at 335 mm (13.2 in) by 22 mm (0.87 in). The discs are clamped with black painted dual-piston calipers up front, and a single-piston sliding caliper at the rear, coupled to an electro-mechanical parking brake. A Bosch ESP 8.0 Electronic Stability Programme, with Anti-lock Braking System (ABS), brake assist, and Electronic Brakeforce Distribution (EBD) complete the brake system.

Standard alloy wheels consist of 9Jx20" cast aluminium alloy "S design", shod with 265/35ZR20 99Y performance tyres. A direct-acting tyre pressure monitoring system is also standard.

Body and interior

The S8 includes subtle detailing to distinguish it from its related A8. The trapezoidal "single-frame" grille bears the characteristic Audi "S" model vertical strut detail which are highlighted in a chrome finish. "S8" badging is displayed front and rear, whilst "V10" badges are displayed on each front wing below the side-repeater indicators. The rear boot-lid incorporates a subtle rear spoiler, and the rear is finished with four oval exhaust tailpipes.

Adaptive xenon-plus high-intensity discharge (HID) headlamps include static turning lights, along with 'swiveling' dynamic cornering lights. Daytime running lamps are five LEDs incorporated into a cloverleaf designed reflector, incorporated into the main headlamp housing.

The interior equipment includes two-colour leather-clad sports seats, a widescreen colour display for the Multi Media Interface (MMI), and white illuminated needles for the instrument dials.

An optional 1000 watt digital Bang & Olufsen Advanced Sound System can be specified to replace the standard BOSE surround sound system. Other notable options include the "Advanced Parking" system, which includes a rearview camera, whose output is displayed on the colour MMI monitor, with "trajectory" lines which move in conjunction with steering wheel movements.

Audi A8

Audi A8





The second-generation A8 built on the Volkswagen Group D3 platform was introduced in early 2003. The model was longer than the previous generation, with room for four or five large adult occupants in the cabin, depending on rear seat configuration.

Two body variants of the second generation A8 are offered, the A8 (standard, or short wheelbase), and the long-wheelbase (LWB) A8L. The A8L adds 5 in (127 mm) of rear legroom.

Audi restyled the D3 platform A8 range slightly in 2005, endowing all variants with a taller, wider trapezoidal single-frame grille, inspired by that of the Nuvolari quattro concept car. The top-of-the-line W12 engined W12 version was the first model to be equipped with this grille; V8 engined models were fitted with the new grille the following year. In addition to the styling update, new engines became available to European and Asian market customers. The entry-level 3.0 L V6 engine was replaced with a new 3.2 L unit featuring Fuel Stratified Injection (FSI), which it shares with the B7 Audi A4.

This generation A8 introduced the 4.2 L turbodiesel V8 engine. Generating 240 kW (326 PS/322 bhp) of power, this is the most powerful diesel engine Audi has ever offered in a passenger automobile, before the debut of Audi's 6.0L V12 TDI engine in the Audi Q7. The engine uses two turbochargers and two intercoolers, with each turbocharger functioning exclusively for one bank of four cylinders. The 2.8L V6 FSI, which is recently added to the A8 range, has a class leading 199g/km of CO2 emission.

For 2008, the A8 received a facelift and also received new electronic safety systems. "Audi Side Assist" detects cars in the A8's blind spots. "Audi Lane Assist" helps when the driver attempts to change lanes without signaling first.

Audi RS6 Allroad Quattro

Audi RS6 Allroad Quattro


Debut in Detroit: Audi is proudly unveiling the allroad quattro concept at this year's North American International Automobile Show in Detroit. This unique crossover has been developed especially for this presentation at the most important car show in the USA - indeed an appropriate highlight enter­ing the 25th anniversary of quattro drive. At the same time this concept car serves as a spearhead in technology demonstrating innovative electronic sys­tems destined to enter series production in just a few years.

Through its design alone, the Audi allroad quattro concept clearly demonstrates its versatility: The elegant sporting character of the Audi Avant is visibly linked to the functional elements of an off-roader, creating a vehicle just as much at home on the highway as on a snowbound mountain track.

The visual appearance of the allroad quattro concept measuring 4.93 meters in length and 1.89 meters in width provides a perfect match for the many new highlights in technology it has to offer. Features quite natural on an Audi of this caliber are the powerful engine, permanent quattro all-wheel drive, and highly advanced suspension, simply perfect both for excellent ride comfort at high speeds and for supreme dynamic performance both on-road and off-road.

A brand-new power unit is all set for action within the engine bay: Displacing four liters, the V8 TDI boasting common rail fuel injection and piezo injectors is the world's most powerful and advanced eight-cylinder self-ignition engine. Maximum output of 210 kW (286 bhp) and peak torque of 650 Newton-meters ensure the muscle and performance of a thoroughbred sports car: Featuring six-speed automatic transmission, the allroad quattro concept accelerates to 100 km/h in just 6.4 seconds, with top speed limited electronically to 250 km/h. And fitted with a particle filter, the allroad quattro concept is the first eight-cylinder TDI to outperform the strict EU 4 European emission standard.

Audi's permanent quattro all-wheel drive featuring a torsen centre differential conveys the power of the engine to all four wheels both on-road and off-road, ensuring maximum traction and lateral stability at all times as essential prerequisites for the very best in driving dynamics and motoring safety.

The chassis and suspension of the Audi allroad quattro concept also offer genuine all-round qualities: Adaptive air suspension, a combination of air suspension and electronically controlled dampers, offers a perfect synthesis of dynamic handling and suspension comfort. Variable ground clearance adjustable from 160 to 210 millimeters enables the Audi allroad quattro concept to take even rough terrain without problems.

An outstanding world-first achievement is Audi road vision, an optical sensor system able to recognize the condition of the road and its surface, thus providing a quantum leap in terms of driving safety: The system not only informs the driver on potentially critical conditions such as gravel or black ice, but also gives the ESP electronic stabilization program and the adaptive cruise control additional, crucial parameters for even better proactive control.

Audi lane assist, a further feature of the concept car, induces vibrations on the steering wheel to inform the driver as soon as he inadvertently leaves his lane. Audi side assist, in turn, incorporates radar sensors monitoring the area behind and next to the car. So once the system detects vehicles approaching the Audi allroad quattro concept or driving in the car's blind angle, the driver is informed accordingly by a warning light coming on in the exterior mirror on the appropriate side

Audi RS 6

Audi RS 6






A second generation RS6 5.0 TFSI quattro (Typ 4F) based on the Volkswagen Group C6 automobile platform was launched at the Frankfurt Motor Show in September 2007. Available in Europe from April 2008, and as of July 2008, it is Audi's single most powerful car ever to be produced by the marque, and positions the car ahead of its main competitors, the BMW M5 and the Mercedes E63 AMG in terms of engine output.

The RS6 Avant will not be available in the U.S. market. However, a saloon (sedan) was unveiled in August 2008, and is likely to be offered in North American markets.

Official performance figures for the Avant: 4.6-second 0-100 km/h (62 mph), 14.9 seconds 0-200 km/h (124 mph), and top speed is electronically governed to 250 km/h (155.3 mph), with a factory option to derestrict the top speed to 274 km/h (170.3 mph). In standard form, CO2 emissions are rated at 333 g/km.

Powertrain

The engine is an all-aluminium alloy 4991 cc 90° V10 twin-turbocharged Fuel Stratified Injection (FSI), with a dry-sump lubrication system, and a unique firing order. It has four valves per cylinder, with twin chain-driven double overhead camshafts, and variable valve timing for both inlet and exhaust camshafts. Charged intake air is cooled with two side-mounted intercoolers (SMIC)s. The engine produces 580 PS (427 kW/572 bhp) at 6,250 to 6,700 rpm, and 650 N·m (479 ft·lbf) of torque from 1,500 to 6,250 rpm. Engine management is by way of Bosch Motronic ME 9.1.2 engine control unit, incorporating two integrated control units which act as "master" and "slave" concepts. It also uses mapped direct ignition with ten individual spark coils, an electronic drive by wire throttle ("Bosch E-Gas"), cylinder-selective knock control, and cylinder bank adaptive lambda control, utilising eight lambda sensors.

A total of seven radiators, and four electric cooling fans are needed to cool the engine and related components under the bonnet of the RS6.

This RS6 overtakes the position (in engine output) from the BMW M5, making about 70 bhp (52 kW) and 150 N·m (111 ft·lbf) more than BMW's naturally-aspirated V10 engine.

Drive passes through a modified six-speed tiptronic automatic transmission (gear ratios - 1st: 4.171, 2nd: 2.340, 3rd: 1.521, 4th: 1.143, 5th: 0.867, 6th: 0.691), with shortened shift times, with "Dynamic Shift Programme" (DSP) and "Sport" mode. It has paddle-shifts mounted behind the flat-bottomed steering wheel, similar in design to the B7 RS4. The gearbox is set by default, in conventional automatic mode, to delay up-changes during acceleration, and change down earlier to maximise engine braking. Downchanges in all modes of operation include the Powertrain Control Module ECU "blipping" the drive by wire throttle, for smoother shift changes. The hydraulic torque converter includes a lock-up function.

Like all Audi RS models, the RS6 is fitted with quattro permanent four-wheel drive as standard; including the latest asymmetric dynamic 40:60 front-to-rear default torque distribution from the Torsen T-3 centre differential. This latest incarnation of the Torsen quattro, first seen in the B7 RS4, can dynamically apportion up to a maximum 100% torque to the rear axle, or up to 80% to the front, dependent on traction conditions.

The front and rear axle final drives are conventional "open" differentials (ratio 3.317), and use the Audi "Electronic Differential Lock" (EDL). EDL is a part, or "function" of the Bosch ESP 8.0 Electronic Stability Programme, which also includes "Anti-Slip Regulation" (ASR) traction control system.

Steering and suspension

Like the previous RS6 and the B7 RS4; this generation RS6 includes Audi's "Dynamic Ride Control" (DRC) Sports suspension system. The system is mainly mechanical; using a pump to provide additional pressure in the diagonally linked shock absorbers during cornering, to counteract rolling and pitching. The system can dynamically adjust the stiffness at each shock absorber constantly to maintain both a comfortable ride and high grip. On this version, it has a three-way level control, selectable from the Multi Media Interface controls.

The steering system includes rack and pinion speed-dependent "servotronic" power steering, with a ratio of 12.5, and a turning circle of 12.2 metres.

Brakes, wheels & tyres

Standard brakes on the RS6 consist of drilled, radially vented and floating iron discs, the front discs sized at 390 mm (15.35 in) in diameter by 36 mm (1.417 in) thick, and the rears at 356 mm (14.02 in) diameter by 28 mm (1.102 in). The front discs are clamped by gloss black 6-piston fixed Brembo monobloc alloy calipers incorporating the "RS" logo, and black single-piston floating calipers, with integrated electro-mechanical parking brake linkage actuating on the rear discs.

Optional "Audi Ceramic" Carbon fibre-reinforced Silicon Carbide (C/SiC) composite front brakes are available, only with 20 in wheels, which use 420 mm (16.54 in) diameter by 40 mm (1.575 in) thick drilled, vented, and floating SGL Carbon discs, with grey painted 8-piston fixed Alcon monobloc alloy calipers. Irrespective of the type of disc constrution, all brake discs are mounted via high strength steel mounting pins which connect the 'working' surface of the disc to lightweight alloy disc hubs.

A "sport-biased" Bosch ESP 8.0 Electronic Stability Programme is standard, and includes Anti-lock Braking System (ABS) and Electronic Brakeforce Distribution (EBD).

Standard road-wheels (in the UK) are 9.5Jx20 inch '5-segment-spoke' design alloy wheels running on 275/35 ZR20 102Y tyres (rated at 850 kg (1,874 lb) per tyre), with a no-cost optional 9.5Jx20 '7-arm double spoke' design (identical style to B7 RS4), or 9Jx19 inch '10-spoke' design alloys with 255/40 ZR19 tyres.

Bodywork and styling

Initially, the new RS6 will only be available as a five-seater, five-door Avant (estate/wagon) version. Constructed from steel in a monocoque (unibody) design, the RS6 uses aluminium for its front wings and bonnet. A four-door saloon/sedan is scheduled to be available from late 2008.

Visually, the RS6 differs from its related Audi S6, having flared front and rear wheel arches, to allow for a wider track, and the deletion of front fog lights to allow for larger frontal air intakes (for the twin side-mounted intercoolers and additional radiators). The ten (per side) front light-emitting diode (LED) daytime running lights (DRLs), found on the S6 adjacent to the fog lamps in the lower front bumper, are now found within the main headlamp housing on the RS6. LED lighting technology is implemented in the rear lights. The new RS6 also includes adaptive headlights, which swivel around corners in conjunction with steering wheel movements.

Luggage capacity in the Avant ranges from 565 litres (L), to 1660 L.

Other notable features

* Electro-mechanical parking brake, which doubles as a full emergency brake whilst in motion (applying maximum braking effort to all four wheels, activating the anti-lock braking system (ABS)),
* Three-stage sports-biased Bosch 8.0 Electronic Stability Programme (ESP) - standard full protection mode, ESPsportmode, ESPoff.
* DAB digital radio tuner with DVD-based satellite navigation and Multi Media Interface (MMI), with optional hybrid digital/analogue TV tuner.

Audi S6

Audi S6







The latest Audi S6 quattro model (Typ 4F) was introduced at the 2006 North American International Auto Show in January. It is based on the current C6 Audi A6, and uses the Volkswagen Group C6 platform, and is available in saloon/sedan and Avant (estate/wagon) bodystyles.

Powertrain

The C6 S6 features an all aluminium alloy 5,204 cc (317.6 cu in) Fuel Stratified Injection (FSI) 40-valve V10 petrol engine, derived from the Lamborghini Gallardo, re-tuned to produce 320 kW (440 PS/430 bhp) at 6800 rpm and 540 N·m (400 ft·lbf) of torque between 3000 - 4000 rpm. It utilises twin chain-driven double overhead camshafts (DOHC), and variable valve timing for both intake and exhaust valves.

The same engine is used in the Audi S8, where it develops 331 kW (450 PS/444 bhp).

A six-speed tiptronic automatic transmission (gear ratios - 1st: 4.171, 2nd: 2.340, 3rd: 1.521, 4th: 1.143, 5th: 0.867, 6th: 0.691), with steering wheel-mounted "paddle-shifers" is the only transmission available. Torsen-based quattro permanent four-wheel drive, and from 2007 model year with the latest 40:60 front:rear asymmetric/dynamic Torsen T-3 differential, are standard. The final drive ratio is 3.801, and traction is assisted "Electronic Differential Lock" (EDL) and "Anti-Slip Regulation" (ASR) (commonly known as traction control system).

For the sprint to 100 km/h (62 mph), the S6 takes 5.2 seconds, with the quarter mile passing in 13.5 seconds.

Brakes, wheels and tyres

The brakes consist of radially ventilated discs front and rear. The fronts are sized at 385 mm (15.16 in) in diameter, and the rears at 330 mm (12.99 in). An electro-mechanical parking brake works on the rear.

A Bosch ESP 8.0 Electronic Stability Programme, with Anti-lock Braking System (ABS), brake assist, and Electronic Brakeforce Distribution (EBD) completed the brake system.

Standard alloy wheels consist of 9Jx19" cast aluminium alloy "5-arm wing design", shod with 265/35ZR19 tyres. An optional 8½Jx18" cast alloy "S design" with 255/40ZR18 tyres are also available. A direct-acting tyre pressure monitoring system is also standard.

Other features
The S6 features a row of 5 distinctive LED daytime running lamps (DRLs) along the bumper as a point of differentiation from other A6 models. Bi-Xenon HID adaptive headlights which swivel around corners compliment the LED DRLs.

Audi A6

Audi A6







The new A6 (C6) was released in 2005. Designed by Walter de'Silva, the new model is visually an evolution of the C5, but is longer (492 cm), incorporates the new Audi trademark single-frame grille, and features more sophisticated technology. Its design has been criticized, as the grill is almost exactly the same as the Rover 75 V8's, which was revealed a year earlier. Most notable is the MMI (Multi Media Interface) which is a system controlling in-car entertainment, satellite navigation, climate control, car settings such as suspension configuration and optional electronic accessories through a central screen interface. This has the advantage of minimizing the wealth of buttons normally found on a dashboard by replacing them with controls which operate multiple devices using the integrated display.

On the engine side the new FSI direct injection technology was introduced for the first time outside the race track. Although the line of engines represents the same progression as the former model, all engines were new. The Multitronic automatic transmission continues as an alternative alongside a new 6-speed Tiptronic gearbox available in the high end models. quattro permanent four wheel drive is available in most of the lineup, and standard in the most powerful models. quattro is not available on the multitronic variants of the A6 but is available on the manual and Tiptronic gear systems. Conversely the Tiptronic system is only available on the quattro variants of the car. The 6-speed manual gearbox is available with the 3.2L engine but not for the North American market as sales of C5 manuals were slow.

In 2005, the new Audi A6 won the World Car of the Year award, and has recently won its class in the practical caravan tow car of the year awards, due to its array of towing features such as adjustable suspension height and damping, and the presence of a Trailer Stability Program.

Like the previous model, the A6 is available with other body options. The Avant arrived during the course of 2005, while in China, a longer version was introduced in the same year, named A6 L. The allroad (now called "A6 allroad quattro) model made its debut in 2006 and as before is an off-road ready version of the Avant available with either a 2.7 or 3.0 diesel or a 3.2 or 4.2 petrol. The sporting S6 was introduced in the Frankfurt Motor Show, with sales beginning in early 2006. It is powered by a Lamborghini-derived 5.2 L V10 FSI producing 435 PS (320 kW). The S6 reaches 60 mph from a standstill in 5.1 seconds and the quarter mile 13.5 seconds.

A mighty RS6 will be on sale early 2008. This will be powered by a Lamborghini-derived 5.0 L V10 TFSI producing 580 PS (426 kW).

On the 01/22/2008 spy photos of the mid-life facelift A6 appeared on the internet. The images show a slightly redesigned front bumper, new rectangular fog lamps as well as bigger air-intakes to the left and right of the grille.

Audi RS4 Cabriolet

Audi RS4 Cabriolet





The 2008 Audi RS4 and Audi RS4 Cabriolet, developed by Audi AG's performance tuning division quattro GmbH, break new ground in the sport sedan and convertible segments. These high-performance model feature numerous innovations, delivering top performance on both road and track. The Audi RS4 Cabriolet is new for 2008, and it promises to be highly prized with a limited production run of approximately 300 vehicles for the model year. Also new for 2008 are two option packages for the sedan: the Titanium package and the Audi Exclusive interior package.

The Titanium package consists of a black grille; black side window trim; titaniumcolored alloy wheels, exhaust tips, and mirrors; piano black interior trim; and floor mats with contrasting red piping and "RS4" logo.

The new Audi Exclusive interior package consists of red leather seat centers (black leather side bolsters and head rests) and door trim; contrasting red seat and floor mat piping; red stitching on the shift boot, hand brake, seats, and steering wheel; piano black interior trim; RS4 floormat logo; and Audi Exclusive badging. The Audi Exclusive interior package is not available on Sprint or Mugello blue Audi RS4 models.

At Audi, the "RS" designation stands for unmatched performance ability, technological innovation, motorsports pedigree, and thrilling driving dynamics. At the heart of the Audi RS4 is the high-revving 420-hp naturally-aspirated V8 engine featuring FSI direct injection technology, which was first proved out in the Le Mans-winning Audi R8 prototype race car.

The Audi RS4 features the latest generation of the quattro permanent all-wheel drive system with asymmetric/dynamic torque distribution. Under normal driving circumstances, 40 percent of the power is sent to the front wheels and 60 percent to the rear. This new asymmetrical torque split quattro system is key to achieving the Audi RS4's sporty driving dynamics and also ensures Audi's legendary all-weather traction and sure-footed handling ability.

The car has been engineered to reduce excess weight, with the result being a weight-topower ratio of 8.7 lbs. per hp (9.7 lbs. per hp for Audi RS4 Cabriolet). The Audi RS4 is a unique, intelligent, high-performance vehicle with superior drivetrain qualities, offering driving dynamics unmatched by any other car in its segment.

Engine

At the heart of any sports car is the engine, and for the Audi RS4 quattro GmbH placed its trust in a compact V8 unit featuring gasoline direct injection technology, referred to by Audi as FSI. With FSI, gasoline is injected directly into the combustion chamber, resulting in a uniform fuel/air mixture. Because of the cooling effect of the directly injected fuel, Audi's development engineers have been able to increase the engine's compression ratio to 12.5:1, thereby boosting horsepower.

The Audi RS4's FSI technology trickled down from Audi's motorsports efforts. Gasoline direct injection was developed for and proven out in the Audi R8 prototype race car, a five-time winner of the legendary 24 Hours of Le Mans endurance race.

This more efficient combustion process achieves even higher power output, which is demonstrated most clearly in the engine's responsiveness throughout the rev-band. Thanks to this sophisticated injection method, optimum power and torque output are produced in every driving situation at both low and high speeds.

At 7,800 rpm the 4.2-liter engine delivers 420 hp, and peak torque is 317 ft. lbs. at 5,500 rpm. No less than 90 percent of maximum torque is maintained consistently throughout a wide range of engine speeds from 2,250 to 7,600 rpm. Performance on the road is equally impressive: the Audi RS4 Cabriolet accelerate to 60 mph in 4.8 seconds. At 155 mph the vehicle's speed is smoothly limited by an electronic control system.

Audi has deployed the high-revving engine principle for the first time in the Audi RS4, which has a maximum engine speed of 8,250 rpm. The significant advantages of this principle are superior power output at high engine speeds and a smooth, eager responsiveness across the entire rev range. Further amplifying the high-performance experience is the high-revving V8 engine sound that enthusiast drivers live to hear.

For further enjoyment of the V8 sound system, pressing the "Sport" button on the dashboard produces a more aggressive engine exhaust note. Moreover, the electronic throttle control heightens its response to throttle inputs for a more sporty driving experience.

The ultra-compact V8

The V8 power unit is ultra-compact, fitting snugly into the engine compartment of the Audi RS4 without any body modifications. The camshaft and ancillaries, with the exception of the alternator, are all driven by a chain for easy maintenance.

Unique features of the V8 that powers the Audi RS4 versus the Audi S4 include modified pistons and con-rods, a new crankshaft together with its bearings, and new cylinder heads. A twin exhaust system with enlarged pipes provides even higher power output. These extensive measures enable the 4,163 cc engine to break through the magical 100 hp per liter barrier.

Drivetrain

Getting all this power on to the road obviously was a significant challenge, one that was solved by incorporating the quattro permanent all-wheel drive system. Over a quarter century's experience and market leadership in the all-wheel drive car segment represent genuine benefits for Audi's customers. The Audi RS4 features quattro all-wheel drive with asymmetric/dynamic torque distribution.

A center differential distributes the power to the front and rear wheels as required, thereby ensuring optimum traction. In variable road conditions, power can be diverted immediately in full to the front or rear, depending on the need. The distribution system, which under normal road conditions transmits 40 percent of the power to the front wheels and 60 percent to the rear, makes the Audi RS4 an even more impressively dynamic drive. Alongside traction, controllability, stability, load reversal and transitioning, aspects of agility and steering also have been substantially enhanced, underscoring the car's highly sporty character.

The center differential is a self-locking worm gear, which means that the locking action is prompted only under the influence of the drivetrain. When braking and cornering, however, the gearbox permits differences in engine speed. The rear axle differential is fitted with additional cooling fins.

The six-speed gearbox with very short gearshift travel combines compact dimensions with low weight and a high standard of shift comfort. Adapted to the power band of the Audi RS4, the gearing provides excellent power yield in practice, conveying the output of the engine to the car's driven wheels with maximum efficiency.

Suspension

Even the best drivetrain needs the proper chassis and suspension. A standard sports suspension ensures that the engine's output is transferred just as needed to the road. But Audi's new sports sedan boasts a high-performance aluminum suspension with a four-link front axle and a trapezoidal-link rear axle that ensures a superior ride. Precise steering, with sensitive feedback, sporty agility and excellent directional stability make the Audi RS4 the perfect car for the highway, country roads, and the race track.

Each wheel on the front axle is guided by four aluminum transverse links. The trapezoidal-link rear axle offers top-class driving dynamics. This torsion-proof and non-flexing trapezoidal link absorbs a large portion of the forces acting on the wheel. Together with the track link located further to the rear, this special configuration defines the elastokinematic behavior of the rear axle with ultimate precision.

Dynamic Ride Control

The Audi RS4 comes with Audi's Dynamic Ride Control (DRC), an entirely mechanical system that reduces both body roll and pitch along the car's longitudinal and lateral axes. This is accomplished by interconnecting the dampers diagonally by way of a central valve. Body movements during initial acceleration are largely eliminated in this way, as are pitching movements when braking or rolling movements when cornering rapidly. In the Audi RS4, quattro GmbH has succeeded in making the system more compact and lighter than in the Audi RS6.

The combination of quattro drive, DRC, and a suspension specifically tuned to the Audi RS4 allows this outstanding high-performance Audi to hold the road safely even in the absolute limit at top cornering speeds. The Audi RS4 features the latest generation electronic stability program designed and configured especially for this car. Its interventions now are later and shorter, and it also is possible to delay intervention further, or to disable the program altogether.

For the RS4, Audi designers produced a range of light and attractive cast aluminum wheels with a seven double-spoke design. A special manufacturing method yields wheels that are stronger, thinner and lighter.

Compared with the standard Audi A4, the Audi RS4 is lower by 1.2 inches (30 mm). Another important change is the wider track, increased by 1.5 inches at the front and 1.9 inches at the rear. The spring and damper tuning also have been adapted to the sporty dynamics of the Audi RS4.

Servotronic steering has been specially tuned to the requirements of the sports sedan. With its direct response and short travel, it is well suited to the overall character of the Audi RS4.

Brakes for the race track

The Audi RS4's impressive braking is based on a system that fits at least 18-inch wheels. The perforated and ventilated brake discs measure 14.4 inches in diameter at the front and 12.8 inches at the rear. They are designed in a floating arrangement, with the castiron friction ring of the brake system bolted onto the aluminum brake disc cover. The result is a significant improvement in brake resistance to fading, particularly under extreme loads. Another side effect of this technology is a reduction in unsprung mass.

Brake air flow is optimized by means of NACA ducts that keep the brake discs appropriately cool at all times. Featuring eight-piston fixed calipers originally developed for motorsports on the front wheels (four pistons and two brake pads on the inside and outside of each brake disc), as well as single-piston swing calipers on the rear wheels, the Audi RS4 offers supreme stopping power and directional stability.

Other features included in the electronic stability program are the electronic differential lock (EDL), traction control (ASR), electronic brake force distribution, and anti-lock brakes (ABS).

It also is possible to disable the stability program in two stages: in the first stage only the traction control (ASR) function is disabled; in the second stage the program is completely deactivated, including the traction control. As a result, there is no control intervention in any driving situation.

Design

The design of the Audi RS4 combines functionality with aesthetics. The car's appearance embodies the ultimate in uncompromising sportiness. In particular, the RS 4 demonstrates its enormous performance potential where such qualities really count, boasting features such as:

* Flared wheel arches, as a result of the 1.5-inch front and 1.9-inch rear track that is wider than the S4
* RS design bumpers with the trim grille in diamond look
* Flared side sills as well as door cut-out trim strips matched to the sills
* A rear spoiler integrated in the trunk lid and side panels
* A twin-chamber exhaust system with oval tailpipes
* Aerodynamically optimized twin-arm design RS exterior mirrors in aluminum appearance
* Standard 19-inch wheels of seven-double-spoke design
* RS4 badging at front and rear and on the side rubbing strips
* Grille and side window trim strips in matte aluminum appearance

The sporty look of the Audi RS4 is combined with an equally high level of functionality. The large inlets on the front end of the Audi RS4 guarantee optimum cooling of the V8 FSI engine. Flared wheel arches offer substantial space for standard 19-inch wheels. With enlarged tailpipe cross-sections, the twin-chamber exhaust system provides significantly reduced exhaust gas back pressure. The 1.2-inch lowering not only provides a sporty look but also is a major factor in delivering outstanding levels of driving dynamics.

Despite uncompromising sportiness, the car's close family relationship with the Audi A4 is unmistakable. The distinctive single-frame grille and the sweeping headlights, borrowed from the Nuvolari concept car, underscore the family heritage of the Audi RS4.
Interior

Premium quality typical of Audi and genuine sportiness typical of an RS model are combined in harmony in the interior of the Audi RS4. The Recaro sport bucket seats provide excellent lateral support. The RS bucket seats are covered in full silk nappa leather throughout.

Attention to detail is demonstrated in the choice of materials and the workmanship applied in processing them. Leather, aluminum and carbon fiber are the predominant materials in the interior. The RS steering wheel is covered in perforated leather. Carbon fiber trim inside the car serves to accentuate the sporting qualities of the Audi RS4, while milled aluminum door openers are echoed on the gear knob and the steering wheel. The gear knob, handbrake lever and steering wheel are covered in perforated leather.

The standard color LCD driver information system incorporated into the typical RSdesign cockpit features an oil temperature gauge as well as a stopwatch with lap timer function, a useful extra for those special track days so beloved by Audi RS4 drivers. The driver information system welcomes the driver with the exclusive RS welcome logo. The aluminum pedals are further evidence of the motorsports connection, and they also help to reduce weight.

The Audi RS4 Cabriolet has an acoustic roof that also insulates passengers from the cold. The use of fabrics with greater material density reduces the noise level inside the cabin, virtually matching that of the RS4 sedan, even at highway speeds. Thanks to its good thermal insulation and glass rear window, the Audi RS4 Cabriolet can be used without restriction in the winter.

Because of its limited production, the Audi RS4 Cabriolet will be offered with only standard equipment, including navigation system plus, preparation for mobile phone (Bluetooth), SIRIUS Satellite Radio, BOSE® sound system, heated front and rear seats, memory function for the driver seat and exterior mirrors, Bi-Xenon adaptive headlamps, rear parking system, acoustic convertible top, HomeLink® garage/gate opener, auto dimming exterior mirrors, auto dimming interior rear-view mirror with integrated compass, rain and light sensor with "coming home" feature, color driver information system, iPod® glovebox interface (no-cost option in place of standard 6-CD changer), brushed aluminum decorative inlays (no-cost option in place of RS4 carbon fiber decorative inlays).

An optional Premium package on the Audi RS4 consists of navigation system plus, Bluetooth, SIRIUS Satellite Radio, BOSE sound system, HomeLink garage/gate opener, auto dimming exterior mirrors, auto dimming interior rear-view mirror with integrated compass, rain and light sensor with "coming home" feature, and power rear and manual rear-side sunshades.

An iPod interface and aluminum interior inlays are no-cost options.

Safety

The Audi RS4 safety package is both comprehensive and highly sophisticated. Particular attention has been paid to the need for active driving safety. The quattro permanent allwheel drive system already offers more traction than conventional drive systems in critical driving situations. Its variable distribution of power across the two axles now also provides even greater benefit.

An additional boost to safety is provided by the electronic stability program, with its integrated dry braking function. When the road is wet, the system lightly applies the brake pads to the discs at regular intervals, unnoticed by the driver, to sweep water from them and so improve braking response.

The Audi RS4 features a tire pressure monitoring system as standard. The sensors located in the wheels continually measure the tire pressure at three-second intervals. In the event of an acute loss of pressure, the driver information system gives the driver both a visual warning sign and an acoustic alarm.
Passive safety of the highest standard

Great attention also was paid to the issue of passive safety. A rigid body, consistent and coordinated deformation properties, state-of-the-art restraint systems - including the two-stage front airbags - and the Sideguard head airbag system provide exemplary levels of occupant protection. This head-level side airbag system covers virtually the entire side window area, from the A-post to the C-post. The airbags themselves are inflated by a hybrid gas generator, which maintains the airbag pressure for several seconds to provide ongoing protection. This means Sideguard provides full protection even in a secondary collision such as when the car rolls over following initial impact. Audi RS4 Cabriolet models have side airbags that protect the head and thorax of front passengers.

The Audi RS4 Cabriolet's A-pillars are reinforced very effectively by means of highstrength tubes and their optimized structure - an indispensable source of extra safety if the car should roll over. Sills with an optimized thickness and cross-section boost the occupant cell's strength and occupant protection. High-strength tubes also are used in the seat, as a means of protecting occupants in the event of a lateral collision.

If the car should roll over, a roll-over protection system in the double rear bulkhead adds to occupant safety. In this case, two protective bars, controlled by sensors, are triggered behind the rear passengers within milliseconds. Together with the extremely rigid windshield frame, they help to preserve survival space for all occupants.

Audi RS 4

Audi RS 4






After a long hiatus, the second Audi RS4 quattro (Typ 8E), built on Audi's "B7" A4 platform, by quattro GmbH in Neckarsulm, Germany (a wholly owned private subsidiary of Audi AG), was unveiled in February 2005 at Audi's 'quattro Night' celebration at the company headquarters in Ingolstadt, Germany. The RS4 came down a replica of a ski jump then spun several times on an ice rink before coming to rest in the center of the ice. After several minutes to allow the assembled media and guests to examine the car, the RS4 climbed the ski jump and parked near the top. The ski jump was an homage to an audi commercial from 1986 where an Audi climbed a ski jump in Finland to showcase its superior traction due to the quattro drivetrain. The RS4 became available to European customers in mid 2006. It was introduced at the 2006 North American International Auto Show in January, and arrived in June 2006 North America. There was no RS4 built on the Audi "B6" platform which served as the basis for the Audi A4 between 2001 and 2005.

The B7 RS4 is an almost complete departure from previous RS cars, as it was initially available as a saloon/sedan; with an Avant (estate/wagon), and Cabriolet (convertible) versions arriving later. Only the RS6 had taken this similar route (saloon and Avant) before; the previous RS4 and RS2 were available exclusively as Avants. The production run of the B7 RS4 was 2006 to 2008 inclusive, although only 2007 and 2008 model year were sold in the USA.

The B7 RS4 Cabriolet, available in Europe from late 2006, was made available as a model year 2008 vehicle in the USA.

Audi factory numbers indicate that the B7 RS4 saloon can accelerate from 0-100 km/h (62 mph) in 4.8 seconds, and arrive at 200 km/h (125 mph) in 16.6 seconds. Many independent tests have shown that the stock B7 RS4 can readily achieve 0-60 mph times around 4.0 seconds. This is consistent with the pattern of conservatism that is usually found in Audi's official performance numbers. To date, approximately 10,000 B7 RS4s have been built of which around 1,700 are in the USA.

In the saloon, luggage space is 460 L (16.2 cu ft) with the rear seats in the upright position, and 833 L (29.4 cu ft) with the seats folded flat. Kerb (curb) weight of the saloon variant starts at 1,680 kg (3,704 lb) (dependent on specification). This results in a power-to-weight ratio of just 3.93 kilos per bhp.
Powertrain

Power comes from a 4163 cc, V8 32-valve Fuel Stratified Injection (FSI) petrol engine (code BNS). This is a highly reworked high-revving variant from the existing 4.2 L V8, having cylinder-direct fuel injection, and 4 valves per cylinder, instead of 5. It has two chain-driven double overhead camshafts (DOHC) per cylinder bank. It produces a total output of 420 PS (309 kW/414 bhp), over 100 PS (99 hp/74 kW) per litre. The engine also produces 430 N·m (317 ft·lbf) of torque, 90 percent of the total torque being available between 2,250 and 7,600 rpm. The engine breathes through four hi-flow sports catalytic converters, and exits via twin oval tail pipes with integral dynamic silencer/muffler valves. Engine management is controlled via a Bosch Motronic MED 9.1 engine control unit, utilising "Bosch E-Gas", a drive by wire throttle. Ignition uses eight individual spark coils, utilising mapped direct ignition, with triple-electrode spark plugs. Ignition timing is monitored with the aid of four knock sensors.

A six-speed Getrag manual gearbox (code JHM) is the only transmission available (gear ratios - 1st: 3.667, 2nd: 2.211, 3rd: 1.520, 4th: 1.133, 5th: 0.919, 6th: 0.778).

Another focus of the B7 RS4 was on the quattro permanent four-wheel drive, with the 'third generation' asymmetric/dynamic Torsen T-3 centre differential, featuring a 40:60 front-to-rear torque split under normal conditions. Audi stressed that this would result in a more neutral response in corners, and a more dynamic driving experience. Also more aggressive Torque Bias Ratio (TBR) was used and set to 4:1, as opposed to 2:1 on standard A4.[citation needed] That means that one side of the differential can handle up to 80% while the other side would have to only handle 20% of applied torque.

Front and rear axle differentials are conventional "open" types, 233with "Electronic Differential Lock" (EDL), with a final drive ratio of 4.111.

Suspension & Steering

The B7 RS4 also incorporates Audi's "Dynamic Ride Control" (DRC) sports suspension mechanism, where a fluid mechanical linkage between diagonally opposing front and rear suspension dampers is used to counteract vehicle pitch and roll.

Speed sensitive "servotronic" variable electro-hydraulic power assisted steering is controlled from a compact flat-bottomed steering wheel, finished in perforated leather with mock-aluminium trim.

Brakes, Wheels & Tyres

Standard brakes on the RS4 consist of cross-drilled, radially ventilated and floating 365 mm (14.37 in) cast iron front brake discs, with Brembo eight-piston calipers. These, along with the transmission, are supplied with a cooling airflow from NACA ducts mounted in the front undertray. A lighter "Audi Ceramic" drilled, vented and floating 380 mm (14.96 in) x 38 mm (1.496 in) Carbon fibre-reinforced Silicon Carbide (C/SiC) composite front SGL Carbon discs, with Brembo six-piston monobloc aluminium calipers were an option from 2007 model year onwards (and only with 19 inch wheels). These reduce unsprung weight, and improve steering response and handling as a result. Rear brakes are drilled, vented and floating 320 mm (12.60 in) x 22 mm (0.866 in) iron discs, with single piston floating caliper.

Standard wheels are 19 inch alloy wheels (9Jx19" ET29 "7-arm double spoke") with 255/35 ZR19 96Y ExtraLoad (XL) high performance tyres. A no-cost option of 18 inch alloy wheels (8½Jx18" "5-spoke design") with 255/40 ZR18 Y XL tyres was also available.

Audi S4 Cabriotel

Audi S4 Cabriotel







A powerful, attractive-sounding eight-cylinder engine generating 344 bhp and 303 lb-ft, the latest generation of quattro permanent four-wheel drive and a design that creates an air of restrained dynamism: these are the hallmark characteristics of the new Audi S4 Cabriolet. The open-top four-seater crosses the genes of an open sports car with those of an elegant cruiser - a car that offers fascination for all the senses.

The Design

The front end, with the single-frame radiator grille, is visible evidence of the new generation of the S4 Cabriolet. Like the S4 saloon, the Cabriolet features the S specific grid pattern and the redesigned standard xenon headlights.

The bumpers with large air inlets, the aluminum-look casings for the exterior mirrors, the redesigned rear lights and the four oval tailpipes are the distinguishing visual features of the S4 Cabriolet. The Audi S4 Cabriolet is fitted with 18-inch cast aluminum wheels of S design with 235/40 R18 tires.

More than Mere Weather Protection: The Hood

The Audi S4 Cabriolet comes with the electro-hydraulic acoustic hood as standard. It opens entirely automatically in just 21 seconds - even faster than previously. By using new fabrics with a higher material density, the noise level inside is reduced to a level that scarcely differs from that in the Audi A4 saloon. This increases driving pleasure and comfort considerably when driving with the hood up.

Audi offers the hood in three exterior colors. The button only needs to be pressed once to either open or close the soft top. It is likewise possible to do this while the car is moving at speeds of up to 20 mph.

The Interior

Inside, too, the S4 Cabriolet differs in appearance from its brothers. The instrument cluster has the grey dials that are characteristic of S models and special needles.

The electrically adjustable sports seats with a combined leather/Alcantara upholstery are outstandingly comfortable even over long distances. The seats come with an adjustable thigh support and electrically adjustable lumbar support as standard. The new generation of steering wheels now also features in the Audi S4 Cabriolet, with the impact absorber echoing the design of the single-frame radiator grille.

Monday, December 8, 2008

Audi S4

Audi S4








The Audi B7 platform S4 quattro is the most recent version of the vehicle currently on sale, based on the B7 Audi A4, having debuted in late 2005. Although Audi classifies it as a new car, the differences between it and the outgoing B6 S4 appear to be primarily cosmetic, and is still classified by the internal designation: Typ 8E (saloon: 8EC, Avant: 8ED, and Cabriolet: 8HE). It has the same 4.2 L V8 engine as the B6 S4, producing 253 kW (344 PS/339 bhp) at 7000 rpm, and 410 N·m (302 ft·lbf) at 3500 rpm.

There are a few mechanical changes, such as revised springs and dampers and, and for model year 2008 and later, an updated centre Torsen T-3 differential, featuring a 'default' asymmetric 40:60 front-rear torque split on manual transmission quattro models. The Avus-III wheels still available, with an option of an alternative 18 inch "7-spoke" forged alloy wheel.

Bose sound system is now standard, whereas it was optional on the B6 S4, and an enhanced optional DVD-ROM-based satellite navigation system replaces the previous CD-ROM-based option.

The new "corporate" trapezoidal single-frame grille, bi-xenon HID headlamps, "L"-shaped tail-lamps, and quad exhaust tips, and discrete "V8" badging below the side repeater indicators help distinguish the B7 from the previous B6 model.

Audi A4 Cabriolet

Audi A4 Cabriolet





Audi introduced a heavily revised A4 in late 2004, with the internal designation of B7. However, this new range A4 still utilised the existing Volkswagen B6 (PL46) platform, a chassis derived from the outgoing B6, but enjoyed heavily revised steering settings, suspension geometry, new engine ranges, navigation systems and chassis electronics (a new advanced Bosch 8.0 ESP system). Audi's internal platform nomenclature uses PL46 (longitudinal passenger car platform, size 4, generation 6) for both B6 and B7 chassis. The Typ 8E and 8H internal designations are also unchanged from the B6 A4.

The engine lineup received many additions. The 2005 introduction of Fuel Stratified Injection (FSI) on the 2.0 TFSI and 3.2 V6 FSI petrol/gasoline engines, as well as other refinements, increased power output to 200 and 255 PS (147 and 188 kW), respectively. These engines both implement a four-valve per cylinder design. The prior 5-valve design was incompatible with the FSI direct injection system. The 2.0 TDI diesel engine now combines Pumpe Düse (PD) technology with 16 valves for the first time, while the larger 2.5 TDI was increased to 3.0 L, offering 204 PS (150 kW). quattro permanent four-wheel drive remained available on most A4 models. Audi retired its 5-speed manual transmissions in favour of a 6-speed. As before, multitronic transmission is available on front-wheel drive models, while a 6-speed Tiptronic transmission is available on quattro four-wheel drive models.

In addition to the higher-performance S4, which carried over the powertrain of the B6 S4, Audi has reintroduced the ultra-high performance RS4 (RS for RennSport) to the lineup, for the first time on the saloon/sedan and Cabriolet body and with a normally aspirated 4.2 V8 FSI engine. Another notable inclusion is the 3rd-generation Torsen T-3 quattro system, which uses a 'default' asymmetric 40:60 front-rear torque distribution (this new asymmetric centre differential was only available initially on the RS4, and later, on the S4. The remainder of the A4 range still utilised the 50:50 split diff). A limited edition variant first introduced in late 2005, named "DTM Edition", was reintroduced in 2006 as a regular option, the 2.0T FSI engine now engineered to 220 PS (162 kW) with standard quattro. The front grill assembly has changed to be a tall trapezoidal shape in the same manner as the C6 (third-generation) Audi A6.

The B7 Cabriolet model arrived later than the other two body variants, with sales beginning in February 2006. Brand new on the Cabriolet was an entry-level 2.0 TDI version, but to date this is not being offered with the Multitronic gearbox.

The Audi A4 offers many safety features, including side airbags, anti-lock brakes (ABS), Electronic Stabilization Programme, and its optional quattro four-wheel drive. It also received the IIHS "Top Safety Pick For 2007".

According to 2007 Swedish vehicle inspection data, the A4 Avant with diesel engine is the most reliable vehicle available on the market, with vehicle inspection rejection rate of 0.0% in 3 year old category.