Compare the Renault Megane RenaultSport 2.0T 265 Cup - [2012] vs BMW X6 xDrive50i 4.4 V8 F16 - [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 Renault Megane RenaultSport 2.0T 265 Cup or the BMW X6 xDrive50i 4.4 V8 F16. We'll leave it up to you to decide which is your favourite.