based on the BMW E63/E64 6-Series, introduced in 2004. It shares the same 5.0 L V10 S85 engine and SMG III gearbox with the E60 M5 , and produces 507PS / 500 bhp (370 kW) / 384 ft·lbf (521 Nm). The M6 has the same 'power button' as the M5 which modifies