Compare the Bugatti Chiron 8.0 W16 Quad Turbo - [2016] vs McLaren 650S Spider 3.8 V8 Twin Turbo - [2014]. 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 Bugatti Chiron 8.0 W16 Quad Turbo or the McLaren 650S Spider 3.8 V8 Twin Turbo. We'll leave it up to you to decide which is your favourite.