The Murcielago is available as a two-passenger coupe or roadster. Both models feature a 6.5-liter V12 engine that produces up to 632 horsepower (Lamborghini states 640 PS or Pferdest?rke (German for "horse strength"), a unit of power measurement commonly used in Europe, South America and Japan). A six-speed manual transmission is standard, and an available E-gear auto-shifting manual transmission with steering column-mounted paddles allows for split-second gear shifts. A permanent all-wheel-drive system with electronic traction control and an electronically-controlled adaptive suspension are standard equipment. Optional light-weight carbon ceramic brakes offer superior durability and reduce brake fade, where the brakes become less effective due to overheating in extremely demanding conditions such as racing. An available clear glass engine cover allows the owner to display the engine. The interior can be customized with exclusive materials such as Alcantara and carbon fiber trim. The 2008 Lamborghini Murcielago is a carryover from 2007.