Mercedes-AMG GT M178 Engine Specs Unveiled

Without further ado, the numbers you have all been waiting for are these: 510 hp (503 bhp) at 6,250 rpm and 650 Nm (479 lb ft) of torque between 1,750 rpm and 4,750 rpm.

As expected, the 3982 cc cylinder displacement is exactly twice of the M133 engine in the “45 AMG” models, with the M178 essentially being two four-pots bonded together to form a V8.

However, unlike the M133 from the A 45 AMG and Co., the new M178 looks to be very lightly stressed, with the turbochargers only bringing up to 1.2 bar (about 17.4 psi) of boost, as opposed to the 1.8 bar (26 psi) of boost in the M133 four-cylinder.

This could only mean that this 510 hp variant of the engine is only the beginning, with plenty more horsepower and torque to be easily achieved with a simple ECU remap, but we should wait at least a year until more powerful variants of the AMG GT (C190) get launched, including an S-Model variant and a Black Series model.

Speaking of the AMG GT, the car is set to be unveiled in its entirety at the end of August, while the public launch will take place in October, at the 2014 edition of the Paris Motor Show. For some peculiar reason though, it will only reach the market in March 2015.

Just like a racing engine, the new M178 uses a dry-sump lubrication system, which provides its part for the powerplant to achieve a dry weight of just 209 kg (461 pounds) , which is lower than both that of the BMW S63 and the Audi 4.0 TFSI engines.

We mentioned the Audi and BMW powerplants because they are the closest in terms of architecture, both of them being twin-turbocharged V8 engines with the turbochargers situated inside the cylinder lines.

With that being said, the only technical mystery regarding the upcoming Mercedes-AMG GT (C190) sports car is its performance, with AMG choosing to deliver that information sometime in July.