The latest concept is a small four-cylinder running on synthetic fuel that can achieve 71 mpg in an EREV platform.

These cars prove efficiency doesn’t have to be expensive.

the 2026 Hyundai Elantra Hybrid stands out as America's most fuel-efficient sedan, offering 50+ MPG and affordable pricing.

Finnish manufacturer Wärtsilä introduced an engine back in 2015 that was so good, it snagged a Guinness World Records title for being the most efficient four-stroke diesel engine shortly after its ...

Toyota doesn't just make efficient SUVs - what car gets you the most mileage out of the smallest amount of fuel?

On a list dominated by small cars, the midsize 2025 Honda Accord is an impressive outlier. A highway mpg rating of 37 means this sedan, with generous legroom and trunk space greater than its class ...

German manufacturers like Audi, BMW, and Porsche have built a large part of their reputations on being the best performance brands in the industry. The country itself has become synonymous with some ...