An engine's displacement dictates power output based on the bore and stroke, while compression ratio influences how strong ...

For many drivers, engine revving is not necessarily a good thing, as it can signal that you are, perhaps, being overly aggressive behind the wheel, or even worse, that you've got a potentially serious ...

Cummins released details of its 2027 X15 diesel engine, which it says meets EPA 2027 emissions requirements while improving fuel economy — and without adding weight or using more diesel exhaust fluid.

The use of a dyno to measure horsepower and torque is a valuable tool for the racer. If you use the dyno just to see what kind of torque and horsepower numbers your engine is developing, that may be ...

The new turbocharged four-cylinder engine is potent enough to motivate the three-row version of the Grand Cherokee, but it ...

In the new big-boy Wagoneer Ls, this 3.0-liter inline-six, dubbed "Hurricane," has its work cut out: The huge SUVs weigh nearly four tons, and are expected to tow up to 10,000 pounds, too. Powerful ...

Illustration: Kelsea Petersen / The Athletic; Takashi Ayoma / Getty, Antonio Calanni / AP Formula 1’s car design revolution for 2026 is the biggest in a generation. Not only are the chassis designs ...

Muscle cars are usually remembered for the loud stuff: the stance, the stripes, the way they shook stoplights like a minor ...

The new 2026 Jeep Grand Cherokee will not have a V6 or V8 like you might expect. Instead, the large SUV will be powered by an ambitious 2.0-liter four-cylinder turbo cranked up to a substantial 324 ...

Turbocharger use is more prolific than ever, and understanding how one works explains why it’s such a popular choice. To understand the benefit of a turbo, we need a refresher on the basics of the ...