Compare the Seat Leon ST Cupra 280 - [2015] vs Renault Megane RenaultSport 2.0T 265 Cup - [2012]. 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 Seat Leon ST Cupra 280 or the Renault Megane RenaultSport 2.0T 265 Cup. We'll leave it up to you to decide which is your favourite.