It’s one thing to hear your engine roar when you hit the gas, but if your car keeps revving on its own, even while idling or in park, something’s wrong. That high-pitched hum or surging RPM gauge ...

Revving a warm engine under load and within the manufacturer’s redline is not bad for the engine. Revving a cold engine, revving in neutral without load, or accidentally forcing the engine past its ...

The year was 2015. Fans of internal combustion were watching automakers build some of their very best high-performance engines. The fastest Corvette of the day was the 650-horsepower Z06, with a ...

Normally, we associate diesel engines with low revs and high compression ratios, making them ideal for situations where you want more torque horsepower — and yes, there are a lot of differences ...

The era of cheap high-revving engines that once screamed up and down America's highways has largely faded as fuel economy and emissions regulations have forced automakers to rethink how modern cars ...

Discover the engineering marvel behind Mazda's Skyactiv-D 2.2 diesel engine, and what lies ahead for diesel fuel. Mazda unveiled the second-generation CX-5 in 2016 and promised buyers they would soon ...