One fuel-efficient feature of the 2012 Mercedes-Benz CLS63 AMG is start/stop technology. Any time the AMG is in drive or neutral with the brake pedal depressed, the engine stops. The engine starts again when the brake is released.
This top-of-line coupe is powered by the AMG 6.3-liter V8 engine. The 2012 CLS63 AMG also features a seven-speed MCT (multiclutch technology) sport transmission with an innovative start-up clutch that replaces the conventional torque converter.