Compare the McLaren 620R 4.0 V8 Turbo - [2019] vs BMW 3 Series M3 Competition Touring 3.0 xDrive - [2022]. 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 McLaren 620R 4.0 V8 Turbo or the BMW 3 Series M3 Competition Touring 3.0 xDrive. We'll leave it up to you to decide which is your favourite.