BMW had got their V8 powered BMW M3 at the Autocar Performance Show. The BMW M3s biggest competition is the Mercedes-Benz C63 AMG. The M3 has only three doors while the C63 has 5 doors however the engine in the M3 is not as insane as the C63. But that doesn’t make the M3 slow. The M3 gets to 100 kmph in around 4.6 seconds and reaches a top speed of 300 + kmph.