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Compare the Porsche 911 GT2 RS - [2017] vs Mercedes C Class 63 S AMG Cabriolet - [2016]. 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 Porsche 911 GT2 RS or the Mercedes C Class 63 S AMG Cabriolet. We'll leave it up to you to decide which is your favourite.
Ultima GTR 5.7
Engine: Naturally Aspirated Petrol | 5666cc 16v V8
Top Speed: 157 mph
0-60mph: 3.30 seconds
Porsche 911 Turbo 991
Engine: Turbo Petrol | 3800cc 24v St6
Top Speed: 315.4 kph
0-100kph: 3.5 seconds