Internal combustion engines typically have low efficiency, with modern gasoline engines around 35% and diesel engines ...

Four-pots were always a great choice for fuel efficiency, and these seven purely gas-powered units prove just how far ...

Gasoline and diesel engines are very different. The former rely on spark ignition while the latter use compression ignition. Diesel engines typically run at much higher compression ratios than ...

Diesel engines are often harder for home mechanics to repair, as parts are heavier and more expensive due to how diesels ...

GM now has two 6.6L gasoline V8 engines in its full-size truck portfolio, but despite sharing the same displacement, these ...

At TopSpeed, William Clavey is Editor-at-Large, where he focuses on authority and exclusive content, reviews, news articles, features, and opinion pieces all while sharing his passion for everything ...

A fast-rising name in the hybrid vehicle market, Horse Powertrain has spent the past three years transitioning into one of the world's leading engine manufacturers while developing a portfolio of ...

Cummins engines have long been synonymous with diesel power, but for the first time in its 100-year history, the company has introduced a gasoline-powered engine. The B6.7 Octane is the company's ...

Hybrids offer better fuel economy, while nonhybrids often cost less. Which is the better choice? These are our picks on seven ...

The performance brand is no longer relying on a rapid shift to EVs and is instead renewing its focus and investments on combustion engines and plug-in hybrids.

Despite its critics and moves toward electrification, the internal combustion engine is not yet dead. Though its design for passenger vehicles may have begun to reach its apex with Mazda’s Skyactiv ...