Mercedes AMG has cranked out a gem of an engine. The hand built M139 is a 2.0L turbocharged inline four-cylinder that makes 416 horsepower! That makes it the most powerful turbo four-cylinder engine ...

: Retro Designs contacted us with a request to update the information in this article as their original press release included several inaccuracies; you can read the updated article below. There are ...

Tijo is an engineer, mechanic, and an avid content creator with over 5 years of experience as an automotive journalist. His media and publishing journey began with CarHP and CarIndigo, and soon ...