The AMG GT 63 four-door coupe occupies a position in the Mercedes lineup that required a new category rather than a modification of an existing one. It is not a sedan. It is not a GT car in the traditional two-seat sense. It is not a crossover despite its elevated roofline providing more headroom than a conventional saloon. It is a 630-horsepower, four-seat automobile that covers the distance between major European cities in a way that is faster, more comfortable, and more dramatic than any alternative in its price class.