The 2010 Mercedes-Benz E63 AMG is to BMW's M5 what the C63 is to the M3, so the logic goes.
Mercedes sticks to the AMG formula of transplanting the 6.2-liter V-8 into the all-new E Class and boosting the power to 518 horsepower, but strays slightly with the addition of a new seven-speed dual clutch transmission.