Burbling turbo V-8 power, a sleek four-door coupe profile, and now, AMG badges. That's what's on deck this week for the 2010 Los Angeles Auto Show in the form of the 2012 Mercedes-Benz CLS63 AMG, which is making its world debut. The 5.5-liter twin-turbo V-8 promises 518 horsepower and 516 pound-feet of torque paired with AMG's MCT multi-clutch...

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