Compare the Mercury Marauder X-100 - [1969] vs Audi A4 S4 TDI 3.0 V6 - [2019]. 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 Mercury Marauder X-100 or the Audi A4 S4 TDI 3.0 V6. We'll leave it up to you to decide which is your favourite.