Mercedes AMG has cranked out a gem of an engine. The hand built M139 is a 2.0L turbocharged inline four-cylinder that makes ...

The five-cylinder engine is uncommon relative to the ubiquitous four-cylinder, six-cylinder, or eight-cylinder variants. As an odd-number engine, it certainly is in a class of just three such engines.

NASCAR Cup engines live in a strange space: they are tightly regulated, largely hand built, and expected to survive hours at full throttle while still making headline power. The rulebook caps ...

Internal combustion engines have largely been eclipsed by advanced propulsion systems such as jet turbines, electric drives ...

The nomenclature of engine power can get tricky. Brake horsepower, shaft horsepower, pound-feet (lb-ft), dynamometer ratings, revolutions per minute, engine load, and temperatures all play a part in ...

How boxer engines work, why they’re not just “flat” engines, and a 120-year evolution traced from the 1899 Benz to the latest Porsche and Subaru boxers. Boxer engines feature flat, opposing pistons ...