The S63 coupe is lighter than the CL63, thanks to a steel-aluminum hybrid body, a lithium-ion battery, a lightweight braking system, and especially light wheels. It features an all-wheel-drive system that pushes two thirds of available thrust to the rear wheels. And thanks to the awesome M157 5.5-liter twin-turbo V-8, there’s plenty of thrust to be had. To be exact, 577 horsepower at 5500 rpm and 664 lb-ft of torque from 2250 rpm. Shifting duties are handled by a seven-speed automatic that Benz refers to as “Speedshift.” Mercedes says that the run from zero to 60 mph takes a mere 3.9 seconds, and top speed is governed at a lofty 186 mph.
While the S63 coupe can be ordered with rear-wheel drive in Europe, the all-wheel-drive system is mandatory in the U.S. And that’s probably a good thing, because from our experience in a Euro-spec four-door S63, the stability control system needed to work overtime when the power is fed exclusively to the rear wheels. Fret not, well-heeled enthusiasts, you’ll still be able to cook serious rubber in the corners. Expensive rubber, at that: 255/40R-20 up front and 285/35R-20 in the rear, to be precise. Compared to the standard S-class coupe, the steering has been recalibrated to be slightly heavier and the suspension has been stiffened. Carbon-ceramic brakes are available, as is a head-up display.