Compare the Audi A8 4.2 V8 Quattro - [1999] vs Aston-Martin DB4 1958 - [1958]. 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 A8 4.2 V8 Quattro or the Aston-Martin DB4 1958. We'll leave it up to you to decide which is your favourite.