For 42 years, the XK was Jaguar’s secret weapon. It proved its worth on the racetrack and powered generations of cars. The ...

Geely now holds a Guinness World Record for thermal efficiency, with its new i-HEV system rated at 48.4%, according to a ...

Aramco's new DHE engine offers 25 percent better efficiency than existing hybrid powertrains and can be used as a drop-in ...

From humble origins in the late 19th century to the refined modern builds of today, automakers continue to forge ahead with new engine designs. Throughout the decades, some engines have made more ...

Just how did a Jeep wind up with an engine nearly as exclusive as an exotic V10? The answer makes for an interesting story that's as unique as the engine itself. From Wrangler to Commander to Grand ...

When you think of a hemi engine, it's almost certainly one of Chrysler's legendary HEMI V8s that comes to mind first. Depending on your age, it might be one of the classic HEMI variants from the '50s ...

Close-up of valve covers on a Ford 427 "Cammer" engine - The Throttlestop/YouTube "HEMI" and "Chrysler" go together like a horse and carriage. Whether it's the early, first-generation FirePower HEMI ...

This was a lot tougher than we thought. Some time ago, Speed-O-Motive built a test engine whose only purpose in life was to live on the dyno and test our harebrained ideas to make more power. While ...

A salvage-auction Subaru STI hides a blown “built” engine. Teardown uncovers shattered pistons, toasted bearings, and dealer trickery disguised as performance. Pete’s auction-bought 2017 Subaru WRX ...

Fantastic sound. The smell of burnt rubber. Ridiculous power. Chrysler's HEMI V8 family had all of these traits since the first 331-cid (5.4-liter) FirePower unit entered production in 1951. The ...