The current CLS 63 AMG shares its engine with the previous-generation E 63 AMG and both make 378kW (514hp). If the same arrangement sticks then expect to see a 6.3-litre V8 installed and making 386kW (525hp). Driving the rear wheels should be Merc's Speedshift MCT 7-speed gearbox. Just like the E 63 AMG standard wheels should be 18-inches with the 19-inch size listed on the options menu.
Sales of the CLS 63 AMG should begin in 2011. Segment rivals will include the new Porsche Panamera Turbo and the high-performance version of Aston Martin's new Rapide. Audi will also enter this four-door coupe segment with the A7.