Its hardly been a month since taking the wraps off the regular CL-Class models, Mercedes-Benz went ahead and revealed the flagship versions of its Uber luxury coupe, the 2011 CL63 and CL65 AMG models. CL63 AMG, out goes the old naturally-aspirated 6.2-liter V8 and in comes the smaller, lighter yet more powerful 5.5-liter V8 with twin-turbocharging and direct-injection technology, hooked up to an AMG Speed shift 7-speed automatic.

In standard form, it craks out 536HP at 5,500 rpm and 590 lb-ft of torque from 2,000 to 4,500 rpm propelling the CL63 AMG from zero to 60mph (96km/h) in 4.4 seconds, and on to an electronically limited top speed of 155 mph (250km/h).

Add the optional AMG Performance package, and output climbs to 563HP and 664 lb-ft of torque allowing the coupe to reach the 60mph (96km/h) mark in 4.3 seconds and an electronically limited top speed of 186 mph (299km/h).