An extended length variant of the A8, the 2013 Audi A8 L grants the driver rear window shades, Audi parking system plus, rear seat comfort package, and power door close assist. For increased performance Audi offers a W12 trim level that equips the A8 with a W12 engine, producing 500 hp and 463-lb of torque for a 0-60 time of 4.4 seconds. Fuel mileage for the W12 falls within an EPA estimated range of 14 mpg city and 21 mpg highway. To maintain fuel efficiency the A8 L is also offered with the standard 3.0-liter turbocharged V6 engine. Features include 20-inch wheels, 22-way front comfort seats, touch technology navigation, cornering lights-static LED, heated side mirrors, heated windshield nozzles, navigation, 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 L is backed by a 4-year/50,000-mile warranty.