The Coupe is sprung firmer than the sedan, and it's noticeable over bigger bumps for the most part, where the body rises and falls more sharply with the changing surface. It communicates deftly without overloading the senses, giving the C63 an air of precision while still maintaining a sense of luxury. In comfort-biased drive modes, it even errs on the side of being too light, but it weights up naturally through corners and as you pile on the speed. There's grip in abundance from the broad rear rubber, and the steering feels fluid and intuitive without being overbearing. These aspects matter more than weight in the case of the compact AMG, giving it more grip and natural balance than the already super-composed four-door. It boasts a rear suspension exclusive to the two-door version, along with a wider track and a lower center of gravity. But despite packing on the pounds, the Coupe is the better of the two to drive. But Mercedes-AMG is a far cry from Lotus, and the extra 200+ lbs the C63 has gained in its transition from sedan to coupe is a testament to that. Simplify, then add lightness - that was the creed of Colin Chapman at the helm of Lotus and it was an ethos that helped build some of the finest handling sports cars of all time. It might not be as quick at the act as a modern dual-clutch, but it's smoother and easier to live with, while just as effective at full blast. The transmission delivers precise and fluent shifts, and when hustling down a twisty road will rush up and down the gears impeccably. With no perceptible turbo-lag and instantaneous thunder at every throttle application, the V8 tugs at the heartstrings of every driving enthusiast, while delivering bone-crushing performance that establishes the C63 Coupe as a true German muscle car. The V8 engine and AMG performance exhaust system work in unison not only to create a truly visceral soundtrack but also connect the driver to the core of the car. 0-60 takes 3.7 seconds in C63 S guise, with the standard model only a tenth of a second behind. Both derivatives use the same AMG-tuned nine-speed automatic transmission, and in true compact luxury coupe fashion, the drive is sent to the rear axle. In base guise, it develops 469 hp and 479 lb-ft - by no means meager figures - but in its most wicked state of tune, the C63 S Coupe delivers 503 hp and 516 lb-ft. In the case of the C63 Coupe, it's a 4.0-liter V8 housing two turbochargers in a hot-vee configuration, screaming rebellion in the face of manufacturers downsizing to six-cylinder alternatives. At the heart of any true AMG-badged Mercedes lies a handcrafted heart, built with the one man, one engine philosophy that sees a single engineer assemble an AMG motor from start to the first time it fires up.