Audi R8 coupe 4.2 FSI quattro

The Audi R8 was initially equipped with a 4.2 litre V8 engine. Specifically, it is an all-aluminium alloy 32-valve (four valves per cylinder) petrol engine, utilising Fuel Stratified Injection (FSI), and has a displacement

of 4,163 cubic centimetres (254.0 cu in). It develops a motive power output of 420 metric horsepower (309 kW; 414 bhp) (Directive 80/1269/EEC), and generates 430 newton metres (317 lbf·ft) of torque, on 98 RON 'Super Unleaded' petrol. It is basically the same engine used in the Audi B7 RS4, but is modified to use a dry sump lubrication system. This V8 is a highly reworked, high-revving variant of the existing 4.2 litre V8, but includes cylinder-direct fuel injection (Fuel Stratified Injection), and four valves per cylinder, instead of five (as used on the previous non-FSI variants). It also uses two chain-driven double overhead camshafts (DOHC) per cylinder bank, and utilises variable valve timing for both inlet and exhaust camshafts. The 4 wheel drive system is biased towards the rear; it sends 30% of its power to the front wheels and 70% to the rear.

The two-seat coupé is currently available in Bahrain, Europe, the United States, Canada, Australia, Japan and South Africa. The R8 Spyder, an open-top roadster model, followed in 2009. In Latin America, the R8 became available at the end of 2008 at dealers in Mexico City, Bogota, Medellin, São Paulo, Rio de Janeiro, Buenos Aires, Lima, Santiago and Santo Domingo.