Mercedes-Benz has announced full details on the 2012 CLS 63 AMG model.<br /><br /><br />New for the CLS 63 is now AMG's 5.5 liter biturbo V8 engine, which replaces the outgoing naturally aspirated 6.3 liter V8.<br /><br /><br />The new 5.5 liter biturbo unit features a peak output of 410 kW (557 PS/550 bhp) and 800 Nm (590 lb-ft) of torque with the AMG Performance package. The standard engine configuration is rated at 386 kW (525 PS / 521 bhp) and 700 Nm (516 lb-ft) of torque.<br /><br /><br />Both units are mated to the AMG Speedshift MCT 7-speed sport transmission.<br /><br /><br />Fuel economy on the standard CLS 63 AMG now comes in at under 10 liter/100 km (a noteworthy achievement) - with a 9.9 liters per 100 km rating on the European cycle (NEDC).<br /><br /><br /><img src="http://ll.broadbandsports.com/images/42763_thumb.jpg" alt="2012 Mercedes Benz CLS 63 AMG official promo" title="2012 Mercedes Benz CLS 63 AMG official promo" width="150" height="90" alt="2012 Mercedes Benz CLS 63 AMG official promo"/>
