Audi S8

Audi S8

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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.