We’re going to drag race three German powerhouses over the 1/4-mile from a standing start, a rolling race across the 1/2-mile, and a brake test. Let's meet the contenders… BMW M5 CS - 635hp - 750Nm - 1,825kg - 4.4-litre twin-turbo V8 - AWD - £141,000 Audi RS6 GT - 630hp - 850Nm - 2,075kg - 4-litre twin-turbo V8 - AWD - £177,000 Mercedes-AMG E63 S - 612hp - 850Nm - 1,990kg - 4-litre twin-turbo V8 - AWD - £87,000 Watch the full video: