Both the 4.2 and 4.2 L models come with a 4.2-liter V8 that makes 372 hp and 328 pound-feet of torque. The 6.3 L comes with a 6.3-liter W12 making 500 hp and 463 lb-ft. Both engines are matched to an eight-speed automatic transmission that drives all four wheels. Standard equipment for every 2012 Audi A8 includes antilock brakes, stability and traction control, full-length side curtain airbags, front- and rear-seat side airbags and active front headrests. The optional Driver Assistance package also includes a blind spot monitor and lane-departure warning system, as well as Audi Pre-Sense Plus, which monitors traffic and alerts the driver if a potential collision is detected. The interior of the A8 provides first-class comfort, especially in the L versions, which boast a limo like 42.9 inches of rear legroom. In typical Audi fashion, the fit and finish is superb, with generous amounts of wood, faux suede and aluminum accents lending a luxurious ambience. Luxurious, handsome cabin, cutting-edge technology features, excellent driving dynamics, standard all-wheel drive..