Compare the Audi A6 S6 4.2 Quattro - [1999] vs Mitsubishi 3000 GT VR-4 - [1994]. Find out which car is the fastest, most powerful, lightest or has the biggest engine in our top trumps style comparison page. Find out which car has the highest top speed or is the fastest accelerating, is it the Audi A6 S6 4.2 Quattro or the Mitsubishi 3000 GT VR-4. We'll leave it up to you to decide which is your favourite.