Compare the Seat Leon Cupra 280 - [2014] vs Dodge Challenger RT 5.7 V8 - [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 Seat Leon Cupra 280 or the Dodge Challenger RT 5.7 V8. We'll leave it up to you to decide which is your favourite.