An interesting Mercedes-AMG GT prototype has been spied testing at the Nurburgring and it could be the Black Series variant.

While it seems very early for the AMG GT Black Series to be in the works, the following prototype certainly isn’t a normal AMG GT. TouriClips notes that the normally retractable spoiler has been replaced with a fixed unit. Additionally, the front bumper is more aggressive than the regular AMG GT will be and the exhaust note and intake noise are more apparent than previously spied AMG GT prototypes.


When the Mercedes-AMG GT initially launches, the car will be available in two specifications. The range-topper will be the Mercedes-AMG GT-S and its 4.0-litre biturbo V8 should deliver an impressive 503 hp at 6250 rpm. That equates to 126 hp per litre and is joined by an equally impressive torque figure of 479 lb-ft between 1750 and 4750 rpm.

Known internally as the M178, the engine is a completely new replacement for the naturally-aspirated 6.2-litre V8 engine which of course powers the GT’s predecessor, the SLS AMG. It features the same 83 mm bore and 92 mm stroke as the 2.0-litre turbocharged four-cylinder utilised by the A 45 AMG, CLA 45 AMG and GLA 45 AMG. The turbochargers are produced by Borg Warner and operate at a maximum pressure of 2.3 bar.

Some of the other cool features of this new powerplant is the Bosch piezo injection system which delivers up to seven injections per cycle. Elsewhere, the cylinder barrels are finished in the German marque’s Nanoslide material to dramatically reduce friction and improve efficiency.

According to recent reports, the 2015 Mercedes-AMG GT could debut online on September 9th. While that remains to be seen, we do know that it will be unveiled to the public at October’s Paris Motor Show.

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