The 2008 Audi R8 is equipped with a 4.2-liter V8 engine capable of spinning to a lofty 8,250 rpm. Maximum horsepower of 420 occurs at 7,800 rpm, whereas 317 foot-pounds of peak torque is generated at 4,500 rpm. While this engine may seem like too high revving, Audi assures that 90 percent of maximum torque is available from 3,500 to 7,600 rpm. Direct fuel injection forgoes a manifold for mixing gasoline and air, while dry-sump lubrication keeps vital parts greasy when the cornering gets quicker. A six-speed manual is standard, and a sequential shift R tronic automatic is available. Quattro all-wheel-drive is engineered with a viscous coupling to distribute torque front and rear. Available magnetic ride control relies on electricity to vary shock absorber oil viscosity.