Compare the Citroen DS4 200 1.6 Turbo - [2010] vs BMW Z3 2.8i Roadster - [1999]. 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 Citroen DS4 200 1.6 Turbo or the BMW Z3 2.8i Roadster. We'll leave it up to you to decide which is your favourite.