Gas Mileage

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 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.

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.

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?

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.

If you can't (or don't want to) plug in, the 2020 Highlander Hybrid is the most fuel-efficient way to carry up to eight people.

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.

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.

With electric pickup trucks from Ford, GM, and others—including newcomers like Rivian—looking likely to arrive in the next few years, the truck field could be on the verge of a clean, quiet, tailpipe-emissions-free shakeup. That said, you wouldn’t know this segment as being poised...

Which two companies announced expanded lines of plug-in hybrids this week? What big decision did Tesla take back? This is our look back at the Week In Reverse—right here at Green Car Reports—for the week ending March 15, 2019. The big news this week was Tesla's unveiling of its...

Yesterday, when we brought you our 2019 Toyota RAV4 Hybrid first drive review, we missed one very important point. At 39 mpg, the RAV4 Hybrid is now the highest-mileage sport-utility vehicle (as the EPA lists them) without a charge port. All the more impressive is that it’s not a low...