President Donald Trump's administration is being sued over his plan to slash federal emissions regulations and fuel economy ...

Rising fuel prices and tightening emissions regulations are pushing fuel efficiency to the forefront of driver concerns. According to research, the most efficient speed range for standard passenger ...

Fuel comes in different grades based on octane level at gas stations. Only some performance engines require Premium fuel for the best power output, fuel efficiency, and engine function. Are you ...

Top Fuel dragsters are without argument the fastest accelerating manned vehicles on Earth, boasting engines that are absolute marvels of engineering. Each V8 displaces 500 cubic inches, about the same ...

Your car's engine needs a very specific diet of air and fuel to do its job, and it's the fuel pressure regulator's (FPR) job to feed it the right amount. The gadget is relatively tiny and can fit in ...