The E39 BMW M5 is often credited with starting the German horsepower wars. In 1998, it was the fastest four-door sedan in the world, producing 394 hp from its 4.9-liter V8. Few people would have ...

uses the familiar 6.75L V12 that also graced its predecessor, so it should be around for the foreseeable future. Although electrified BMW M models have produced higher horsepower figures, the M5 ...