GENEVA -- Mercedes-Benz put the spotlight on horsepower in Geneva, unveiling a slate of barn-burners from its AMG tuner division and what it says is the world's most powerful eight-cylinder, naturally aspirated production engine.
AMG debuted the CLS 63 coupe and CLK 63 coupe and convertible to replace AMG versions of the CLS 55 and CLK 55, respectively. The three models are powered by a 6.3-liter, 514hp V-8 developed in-house by AMG. It drives through a new AMG seven-speed transmission.
Mercedes claims the engine produces world-best torque and power for a non-boosted engine. "Even these heady heights are not the pinnacle of what can be achieved in series production," said Volker Mornhinweg, head of Mercedes-AMG GmbH since September 2005, said.