Compare the BMW 5 Series 550i GT xDrive F07 - [2013] vs Subaru Impreza WRX STI V1 - Classic JDM - [1994]. 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 BMW 5 Series 550i GT xDrive F07 or the Subaru Impreza WRX STI V1 - Classic JDM. We'll leave it up to you to decide which is your favourite.