Gas Mileage

The Biden EPA chief plans to restore stricter auto-emissions standards—and perhaps lay out targets for going all-electric.

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 RAV4 Prime offers more electric range than the Ford Escape Plug-In Hybrid and Mitsubishi Outlander Plug-In Hybrid.

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.

The EPA has released a final rule that will ease the fleet fuel economy requirements and allow higher amounts of CO2 from vehicles.

Pickups trucks continue to lag other segments of the market in terms of efficiency improvements. When will they catch up?

With Honda's two-motor hybrid system, the 2021 Insight hits a high in city driving and is shaping up to be the highest mileage sedan without a charge port.

Although Fiat Chrysler sold a higher rate of hybrid vehicles than any other automaker, it came up last in fleet fuel economy. How'd that happen?

Some traditional internal-combustion components, like transmissions, could use a rethink yet—with more smarts, not more gears.

Instead of doing away with some of the current incentives for hybrids and PHEVs, it might just limit the annual hike to 1.5% through 2026.

Until electric trucks arrive, the Ram EcoDiesel is the way to haul heavy loads without guzzling fuel at alarming rates.

The push for higher-mileage new cars isn't as controversial as the federal government might be making it sound.

About 98,000 VW, Audi, Bentley, and Porsche vehicles allegedly game federal emissions tests used for fuel economy calculations.

Automakers (17 of them) wrote a letter to President Trump asking for California to be included in his single national standard for revamping fuel economy rules.