Compare the Ford Fiesta RS Turbo - [1990] vs Audi Coupe S2 2.2T Quattro - [1991]. 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 Ford Fiesta RS Turbo or the Audi Coupe S2 2.2T Quattro. We'll leave it up to you to decide which is your favourite.