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.