The world's most powerful four-cylinder engine in series production, made in Affalterbach
Four wins: with an output of 421 hp, 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 40 hp. Maximum torque has also increased from 475 to up to 500 newton metres.
The new, highly efficient powerpack is produced on an innovative production line in Affalterbach, on the "One Man, One Engine" principle and will available in two output versions for the compact models of Mercedes-AMG: 421 hp as the S-model and 387 hp 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 500 newton metres (480 newton metres for the basic version) is available in a range of 5000-5250 rpm (4750-5000 rpm 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 7200 rpm) confirms the M 139 as a sports engine.