Mercedes-AMG G63 drags Audi RS3, Porsche Cayman GTS

Much has been made of the fact Mercedes-Benz slots a twin-turbo AMG V8 into its G-Class. Sure, the G63 looks like an old-fashioned off-roader, but it's fast enough to make sports cars nervous in a straight line. It might weigh 2500kg, but 430kW and 850Nm are serious outputs. In its latest head-to-head (to-head), the team at Top Gear UK lined it up against the five-cylinder Audi RS3 and four-cylinder Porsche 718 Cayman GTS.