Compare the Mercedes E Class 500 W124 - [1990] vs Audi Q7 6.0 V12 TDi Quattro - [2008]. 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 Mercedes E Class 500 W124 or the Audi Q7 6.0 V12 TDi Quattro. We'll leave it up to you to decide which is your favourite.