Gas Mileage

The first version of the Hummer EV "electric supertruck" is too portly for EPA range and efficiency ratings. But GM is releasing them anyway.

Even as the Biden administration prepares for tighter fleet fuel economy standards, automakers' bank of credits could stifle innovation and lower the actual mpg average.

The no-frills, high-mpg, three-wheeled car that's been anticipated for a decade still hasn't arrived, but now the company's decided an electric version comes first.

The NHTSA under President Biden will resume the higher fine schedule for gas-guzzling fleets approved in 2016. Should they be applied retroactively?

Ford, GM, and Stellantis expressed a “shared aspiration” to achieve 40% EVs by 2030, with a framework yet to be worked out in detail.

The 2022 Tucson Hybrid drives better than its gas counterpart and offers great value. But the big question is, how efficient is it? We took it on a pair of drives, one highway focused and one through the city, to find out.

The U.S. EPA is reportedly on the verge of revealing a plan for tougher annual efficiency increases that would eventually exceed Obama-era targets.

So-called "superusers" should be a target for the shift to electric vehicles, argues the EV advocacy group Coltura.

With the NHTSA, it proposes to rescind rules that took away California's authority to set its own emissions framework and to mandate EVs.

The EPA expressed "concerns" about the process used to create the Trump-era rules that relaxed fuel-efficiency targets.

The electric-truck invasion hasn't yet started. Is 25 mpg the leading edge of pickup truck efficiency?

The Mercedes-Benz GLB isn't an EV, but with the B-Class Electric in mind we couldn't help but wonder: "What if?"

At least five automakers have negotiated deals with the California Air Resources Board to adhere to stricter emissions standards.

A rare investigation from the EPA's federal watchdog will be conducted over the administration's hasty rulemaking that contradicted its own earlier findings.

The lowest-priced, most fuel-efficient models from Toyota and Honda—two brands that built their reputation on small cars—have been dropped.

The new Sonata Hybrid costs more than the outgoing version, and more than its rivals.

The EPA might give automakers another big break on fuel economy and emissions—in addition to the one they just received in CAFE requirements.

Real driving emissions ratings should be the start of any incentive program aimed at spurring sales, amid a pandemic with connections to air quality.

Car buyers see mileage as an important piece of vehicle selection—with or without the low gas prices.

GM owners could be less likely to buy another product from the automaker because of its position to squash California's emissions rights.