Horse Powertrain claims the engine has a peak brake thermal efficiency of over 44 percent, reducing fuel consumption.

A fast-rising name in the hybrid vehicle market, Horse Powertrain has spent the past three years transitioning into one of ...

The fascinating history of Chevrolet's mid-engine prototype, the Aerovette, and its unique rotary engine powerplant.

The mini G-Class has been spotted again, but this time there's something different.

A camouflaged Toyota two-door rally car prototype has been spotted testing on a gravel rally stage in Portugal, and the intriguing thing about it is that it looks like no existing model from the ...

COLORADO SPRINGS—Honeywell has received a prototype design contract from the U.S. Air Force’s Propulsion Directorate for its SkyShot 1600, a new small engine targeting the Collaborative Combat ...

Toyota has filed multiple MR2-related trademarks—including “MR2,” “GR MR2,” and “GR MR-S”—across the U.S., Japan, and Australia, strongly suggesting active development of a new mid-engine sports car.

For years, the United States has trailed behind Russia and China in hypersonic weapons. A new engine prototype by Lockheed Martin and General Electric could help it catch up. The United States is ...