Gas Mileage

The difference between unadjusted CAFE figures and window-sticker fuel economy.

Gas-mileage ratings for the 2016 Mazda MX-5 Miata are in.

Many of the cars are more like enclosed bicycles, and virtually none of them could operate on public roads or highways. But the Shell Eco-Marathon offers some useful lessons for the more than 100 high-school and college teams that compete in it--many of them having little to do with the cars...

Famed car designer Gordon Murray will team up with former Honda engine specialist Osamu Goto and oil company Shell to develop a concept for "an ultra-compact, efficient car for city use based around the internal combustion engine." It's not intended for production. Instead, the project's ambitions...

The EPA initially asked for higher truck fuel-economy than it actually wanted, a new book claims.

A new study shows people are driving farther to get to work.

The idea of an all-electric Nissan BladeGlider sports car now seems to be somewhere between delayed and defunct, but the narrow-front delta-wing shape continues to intrigue and challenge vehicle designers. First unveiled in 2010 as a pure race car, an engine-driven DeltaWing car even competed in...

Thus far, automakers appear to have had little trouble meeting the corporate average fuel economy rules that started for 2012 vehicle and will rise steadily through 2025. The general consensus so far is that carmakers have been able to raise their EPA ratings with a combination of tactics that...

The 5-millionth EcoBoost-equipped vehicle to roll off assembly lines marks a significant milestone for Ford.

As corporate average fuel economy standards continue to tighten each year, car companies have so far kept pace with the rising gas-mileage rules. But automakers are seeking credit for every possible advancement in new vehicles as they look toward an average goal of 54.5 mpg in 2025 (roughly...

It happens so quickly: They learn to crawl, and then walk, and before you know it, you're helping them do their first oil change in their first new car. A little more than six months ago, I contributed an article on my car shopping experiences with my daughter Priscilla. Those ended with her...

Younger buyers emphasize fuel efficiency, a new study says.

Continental believes technology that predicts traffic conditions could soon become standard on new cars.

The EPA hopes to tighten standards for fuel-economy testing.

A new study says consumers expect gas prices to increase eventually.

The U.S. Postal Service seeks a new vehicle type to replace its aging fleet.

Both General Motors subcompact crossovers received the IIHS Top Safety Pick rating.

A Honda City is spotted roaming the streets of Torrance, California.

New EU emission testing rules are set to take effect in 2017.

The ACEEE ranks new cars by their environmental impact.