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 ...

This is how we ended up with a W8-powered Passat wagon with AWD and a six-speed stick, how the 1,000-horsepower W16 Bugatti Veyron was born, and how VW was cramming V10 and V12 diesel engines into ...