AMG's 469-hp M139 four-cylinder is the most powerful of its kind, but the C63 S E Performance failed commercially and is ...

Mercedes-Benz built a four-cylinder engine with more horses than any other, but that didn't shield it from U.S. criticism.

Mercedes-AMG has taken the wraps off the new M139 version of its transverse 2.0-liter turbocharged cylinder, and the maximum horsepower figure is a mind-bender. It's 416, or 40 more than stumped up by ...

Mercedes-AMG recently unveiled the all-new M139 2.0-liter turbocharged engine. It's a complete redesign of the previous-gen M133 four-cylinder motor in the outgoing Mercedes-AMG A45, CLA45, and GLA45.

AMG is effectively telling the laws of physics to hold its beer while it turns the wick up to insane levels on a production engine. Kyle Hyatt (he/him/his) hails originally from the Pacific Northwest, ...

Two variants of the M139 will be offered, a base model, good for 382 hp and 354 ft lbs of twist, and the “S” model, with the power outputs described above. It’s a significant gain over the ...

The elevated level of craftsmanship and ingenuity of the Affalterbach engineers has brought us some of the most sought-after high-performance cars. With a few exceptions, they take standard Mercedes ...