Compare the Porsche 911 Turbo S Cabriolet 991 II - [2016] vs Lotus Exige 380 3.5 V6 - [2017]. 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 Porsche 911 Turbo S Cabriolet 991 II or the Lotus Exige 380 3.5 V6. We'll leave it up to you to decide which is your favourite.