The 2013 BMW M6 Coupe and Convertible both make use of the S63Tu engine, a 4.4-liter unit with an output of 560 hp at 5,750 – 7,000 rpm, and maximum torque of 500 lb-ft on tap between 1,500 and 5,750 rpm. The engine is mated to a 7-Speed M-Double Clutch Transmission and 0 to 62 mph is achieved in 4.3 seconds while the spring to 124 mph takes only 13.1 seconds..