Commonly used in trucks and heavy machinery, the diesel engine is one of the most important engines created. Developed in the late 1890s by German engineer Rudolf Diesel, the diesel engine came from ...

The biggest 3-cylinder diesel ever made was made for the Alfa Romeo 33 in 1986, and for all the wrong reasons. The VM Motori HR 392 OHV was born because the gas engine in the Alfa 33 was a flat-four ...

Chevy and Ford have both produced 3.0L diesel engines, but they have some noteworthy differences. Here's how the two engines ...

Two-Stroke Opposed-Piston Diesel Engine By Achates Power The Achates Power opposed-piston engine is packed full of unique technology. The supercharged, turbocharged, diesel 3 cylinder makes use of six ...

You're looking at the world's smallest direct-injection diesel currently in production. Built by Mercedes, this 799cc three-cylinder oilburner weighs just 190 pounds and powers the $16,750 smart ...

It costs the same as the biggest V8 in the range, but it's down nearly 200 horsepower and makes equal torque. Kyle Hyatt (he/him/his) hails originally from the Pacific Northwest, but has long called ...

Here are the best engines in 2026 for towing, fuel efficiency, and more.

BMW will offer four-cylinder diesel engines in North America as it seeks to improve fuel efficiency and match the performance of its current six-cylinder gasoline engines. BMW is considering diesels ...