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Look for this engine in the A45, CLA 45, and GLB 45 in the near future.
Mercedes-AMG finally announces the official specs for its new 2.0-liter turbocharged four-cylinder engine that goes under the internal designation M 139. In the higher-spec S trim, the mill offers 416 horsepower (310 kilowatts) and beats the previous-gen A45 with 375 hp (280 kW) to take the title as world's most powerful factory-offered four-cylinder engine ever available in a production vehicle. If we want to split some very thin hairs, the Mitsubishi Lancer Evolution FX-440 MR made 440 hp from its 2.0-liter four-cylinder, but production amounted to just 40 units exclusively for the UK.

https://www.motor1.com/news/353404/mercedes-amg-a45-engine-specs/
 

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Ill be curious to find out if this one has significant turbo lag. 30psi is a lot of boost. The thing that makes the twin scroll V6 in the 43 so good is that the max torque hits super early at 2000rpm. Hopefully all that boost doesnt burn up these 4 pots in short order.
 
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