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Mercedes-AMG GT R vs Porsche 911 GT2 RS: The numbers

motor1 logo motor1 28/12/2017 Vicky Parrott

Mercedes-AMG GT R

Mercedes-AMG GT R
© UK

Two stupidly powerful rear-wheel drive super-sports cars. But which wins the numbers game?

Are they supercars? Are they sports cars?

Well, who really knows, and who really cares about the semantics; they're both hilariously powerful rear-wheel drive coupes, and we want to know which one would win in a good old game of Top Trumps.

Related: Six things you need to know about the Mercedes-AMG GT R (PA Motoring)


The cars

The Mercedes-AMG GT R arrived in a lurid green flurry of extravagantly long bonnet and anti-social V8 savageness, and we love it.

It's lairy without being terrifying, precise without being characterless.

2018 Porsche 911 GT2 RS: First Drive © UK 2018 Porsche 911 GT2 RS: First Drive The Porsche 911 GT2 RS might have a two fewer cylinders, but the evergreen appeal of Porsche's rear-engined sports car is still strong in this bonkers take on the rear-engined icon.

We've driven both, and neither is the widow-maker you might be expecting considering the amount of power going to the rear wheels, but here's how they stack up on the figures:  


Mercedes-AMG GT R


Porsche 911 GT2 RS

Engine3982cc, twin-turbo V83,800cc twin-turbo flat six
TransmissionSeven-speed dual-clutch autoSeven-speed dual-clutch automatic
DrivetrainRear-wheel driveRear-wheel drive
Power577bhp at 6250rpm691bhp at 7000rpm
Torque516lb ft at 1900 - 5500rpm553lb ft at 2500-4500rpm 
Power to weight354bhp per tonne447bhp per tonne
Top speed198mph211mph
Fuel economy24.8mpg23.9mpg
CO2 emissions259g/km269g/km
Width2075mm (inc. mirrors)1978mm (incl. mirrors)
Height1284mm 1,297mm
Fuel tank capacity85 litres64 litres

2018 Porsche 911 GT2 RS: First Drive © UK 2018 Porsche 911 GT2 RS: First Drive Which one wins? 

Well, it's got to go to the Porsche. Truthfully, this is an unfair fight given the Porsche's much higher price and power output, but in spirit and execution there are a lot of similarities between these two hairy-chested rear-wheel drive coupes.

In fact, the AMG GT-R held the Nurburgring lap record for rear-wheel drive production cars with a time of 7min 10.9sec, until the Porsche 911 GT2 RS set an astonishing time of 6min 47.3sec. 

But leaving the numbers game aside for a moment, which one looks best and which one would we want on our driveway? Hmm. It'd probably be green. 

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