Diesel engines are different from gas engines in numerous ways, including their use of high compression ratios. Here's why ...

Understanding what twin turbos actually do, how they are configured, and where their efficiency gains are won or lost is ...

One of the main reasons diesel cars offer better mileage is the higher energy content of diesel fuel. Diesel contains more ...

The North American Council for Freight Efficiency’s 10 th Annual Fleet Fuel study has found rapidly rising fuel efficiency performance for long-haul fleets. The average fuel mileage of the study ...

With gas prices putting a strain on most Americans’ budgets, it’s tempting to try to save on fuel. The problem is that some of the most common fuel-saving hacks may not actually work. To get to the ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Over a year and a million kilometers' worth of real-world testing has returned impressive results for Spanish company Fersa's "fuel efficient wheel hub," which cuts fuel burn by at least 3% and saves ...