Ready to experience the thrill of a twin-turbocharged 5.5-liter V8 that produces 536 horsepower and 590 pound-feet of torque? Unfortunately, that kind of excitement doesn't come cheap. Mercedes-Benz has announced pricing for its upcoming 2011 CL63 AMG coupe and S63 AMG sedan. The two-door starts at $151,125 and the four-door will set you back at least $138,875. Both are available with the optional AMG Performance Package, which ups the power output to 563 hp and 664 lb-ft of torque. A little lower on the power pole sits the restyled 2011 CL550 4MATIC, which starts at $114,025, and is motivated by a 4.6-liter V8 which produces 429 hp and 516 lb-ft of torque.
The 4.6-liter unit is 20 percent smaller, in terms of displacement, than the engine it replaces, yet produces 12 percent more horsepower, 32 percent more torque and improves fuel economy by 10 percent. The AMG mill also sees considerable gains in power, and thanks to direct-injection and the use of start/stop technology it sees a 20 percent rise in fuel economy
