Hot new coupé to join C63 AMG saloon, estate and convertible variants before the end of 2016, with power coming from a new 4.0-litre twin-turbo V8 engine

Mercedes-Benz has started early testing on a new C63 AMG coupé. The model, which is expected to join the C-class line-up at the end of next year, has been spotted carrying out performance tests at the Nürburgring.

With the current C63 AMG coupé is due to continue production until May next year, this early development mule wears bodywork from the upcoming C63 AMG saloon, with only its modified track giving away its true identity.

The C63 AMG saloon is due to go on sale following a public debut at the LA motor show in November, with estate, coupe and cabriolet versions set to join it before the end of 2016.

As with the other planned C63 AMG variants, the C63 AMG coupé is likely to use a new twin-turbocharged 4.0-litre V8 engine with close to 500bhp.

That engine will replace the current C63 AMG's 6.2-litre V8 engine, which comes with 451bhp in standard form. The use of forced induction on the new model is likely to push its available torque beyond the 443lb ft of today's car.

Mercedes is likely to pitch the new C63 AMG coupé directly against the new BMW M4, which comes with 425bhp from its 3.0-litre turbocharged petrol engine.

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22 July 2014
The same photos are up on motor authority but they claim it is the next gen E class AMG which would make more sense considering the wider tracks and longer wheel base ( length added before the front doors with the extra long bonnet ).

23 July 2014
Surely it is nonsense to suggest they are only beginning to test a development mule of the couple if the saloon is a couple of months from launch? They are basically the same car and they not?

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