Compare the Audi A4 RS4 4.2 FSI Cabriolet - [2006] vs Lotus Europa SE 2.0 Turbo - [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 Audi A4 RS4 4.2 FSI Cabriolet or the Lotus Europa SE 2.0 Turbo. We'll leave it up to you to decide which is your favourite.