Mercedes-Benz SL-Class SL63 AMG Roadster SpecificationsStandard Engine 6.3L V8Standard Transmission 7 Speed ManualCylinders 8Horsepower @RPM 518@6800Fuel Economy Cty/Hwy 12 / 19Combined Fuel Economy 14EPA Class Two SeaterNumber of Valves 32Torque @RPM N/AFuel Type System Gas Engine / Sequential Electronic Fuel Injected, Sequential Port Fuel Injected
