The letter M stands for the phenomenal qualities of this engine: 507 bhp (373 kW) from 5 litres of displacement, 520 Nm max. torque at 6,100 rpm. Press the accelerator gently and the V10 high-rev engine responds with instant power. It takes just 4.7 seconds for the BMW M5 to go from 0 to 100 km/h, and just ten seconds more to reach 200 km/h - a total of 14.7 seconds is all the M5 needs to set a new standard in engine performance.