A prototype of the Mercedes-AMG GT has been spied undergoing testing on the Nürburgring ahead of a full reveal set for this fall.

A prototype of the Mercedes-AMG GT has been spied undergoing testing on the Nürburgring ahead of a full reveal set for this fall.

Mercedes-Benz and AMG are putting the finishing touches on the all-new "GT" which will try to fill in the void left by the larger and more expensive SLS AMG. Set to go on sale next March, the model will be powered by a brand new V8 4.0-liter twin-turbo engine outputting 510 PS (375 kW) and 650 Nm (479 lb-ft) of torque.

The prototype seen here is dressed in a full body camouflage but it's easy to notice it will have conventional doors instead of SLS' gullwing setup. The company has already said the AMG GT will have a "muscular, never ending front" combined with a "staggeringly beautiful rear." It will utilize an aluminum space frame which will grant a "true lightweight" package for what will be "an all-rounder with extremely sport aspirations."

Among the many teaser photos released so far, Mercedes-Benz has also provided a quick glimpse of the interior cabin which will boast a two-tone red & black upholstery combined with an Alcantara roofliner, carbon fiber trim and a three-spoke flat-bottomed steering wheel featuring aluminum inserts.

The 2015 Mercedes-AMG GT will be officially revealed this October at the Paris Motor Show.

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