The new Mercedes ML63, the SUV that started the high-performance utility class, is set for a fierce battle with the likes of Range Rover Sport, Porsche Cayenne Turbo, and BMW X5 and X6M. For that it not only relies on 518 hp courtesy of a 5.5 liter biturbo V8, it also counts on the efficiency of that engine to give the rivals a bloody nose. Mercedes will explain this in more details after the jump.