New Mercedes-AMG four-cylinder turbo engine

With an output of up to 415bhp, the completely newly developed Mercedes-AMG 2.0-litre M 139 engine is the world's most powerful turbocharged four-cylinder engine in series production.

With this engine, Mercedes-AMG has even exceeded the previously most powerful M 133 by 40bhp. Maximum torque has also increased from 475Nm to up to 500Nm. With an output per litre of up to 208bhp, the new Mercedes-AMG high-performance turbo engine even ranks ahead of many well-known super-sports car engines.

The new, highly efficient powerpack is produced on an innovative production line in Affalterbach, on the 'One Man, One Engine' principle.

The four-cylinder available in two output versions will ensure agile performance for the compact models of Mercedes-AMG - with 415bhp as the S-model and with 382bhp in the basic version. This product policy logic has already proved successful in the V8-powered AMG Performance models, and more closely meets customer wishes.

Apart from its performance figures, the new engine impresses with its immediate response. To this end the torque curve was carefully balanced (torque shaping). The peak torque of 500Nm (480Nm for the basic version) is available in a range of 5,000-5,250rpm (4,750-5,000rpm in the basic version).

With this configuration, the AMG engineers have achieved a power delivery similar to that of a naturally aspirated engine for an even more emotive driving experience. The engine developers were also able to realise a dynamically increasing torque curve in the lower engine speed range, thereby improving agility.

The increasing torque at higher rpm makes the engine more free-revving. Moreover, the high maximum engine speed (up to 7,200rpm) confirms the M 139 as a sports engine.