A performance variant of the Audi A8, the 2013 S8 is a full-size sedan powered by a twin-turbocharged V8 engine that produces 520 hp and 479 lb-ft of torque. The standard 8-speed automatic transmission is paired with AWD. Features include 20-inch wheels, 22-way front comfort seats, touch technology navigation, cornering lights-static LED, heated side mirrors, heated windshield nozzles, hands-free phone capabilities, and rear seat entertainment system. Safety is comprised of night vision assistant with pedestrian detection, Side guard® head curtain airbags, electronic stability control, brake assist, anti-lock braking, electronic brake pressure distribution, traction control, tire pressure monitoring, rear-passenger thorax side airbags, and Audi lane assist. The A8 is backed by a 4-year/50,000-mile warranty.