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 ...

However, if you'd love to sample a twin-turbo V12 powertrain and some truly timeless luxury, for a price point that's just under that of a new GT 63, it bears further investigation.

For the 2007 C63 AMG, Brabus decided that the best route for all-conquering Autobahn performance was to ditch the 6.2-liter ...