2011 Mercedes Benz CL63 AMG 536hp/590 lb-ft

As with most AMG treatments, the styling changes are slight, but include a more aggressive front fascia, side skirts and prominent quad exhaust outlets.
Despite its 63 designation, the 2011 CL63 AMG will be swapping out its 6.2-liter V8 for the automaker’s new 5.5-liter bi-turbo unit. Standard power is 536 horsepower and 590 lb-ft. of torque, but those seeking even more from their ultra-luxury sports coupe will want to option up to the AMG Performance Package. Power in that configuration is up to 563 horsepower, while torque tops out a stump-pulling 664 lb-ft. Regardless of performance level, the 5.5-liter V8 is mated to a seven-speed SPEEDSHIFT MCT 7 automatic transmission with three driving modes and a rev-matching function.
Amazingly, Mercedes-Benz says that fuel consumption has decreased 27 percent, while CO2 emissions are down 30 percent. Look for a top speed of an electronically-limited 155 mph in standard form (186 mph with the upgraded package) and a 0-60 sprint of 4.4 seconds for the standard CL63 and 4.3 seconds for the AMG Performance Package model.