Fuel Efficiency

Despite plenty of claims otherwise, a group of Finish researchers found that block heaters didn't cut fuel consumption or emissions significantly in light-duty gas or diesel models.

Legacy automakers may end up paying "alarming" penalties for not meeting proposed federal fleet fuel economy standards, a lobbyist report claims.

EVs reduce global warming emissions, but that and the phasing-out of fossil fuels may be far less important to Republicans than Democrats.

The 2024 Toyota Land Cruiser has been redesigned with a turbocharged hybrid powertrain, a smaller footprint, and a base price in the $50,000 range.

A 2% annual improvement in fuel efficiency is in the cards for passenger cars, and a 4% yearly improvement for light trucks.

GM chose to pay the fines for fuel-economy shortfalls and bank its credits, while Stellantis reportedly says it's doing better now.

The 50-49 vote rescinds stricter standards for emissions from heavy-duty trucks—although a veto could revive their implementation.

So-called "gasoline-burdened families" are paying a huge portion of their income toward gas vehicles and could greatly benefit from a switch to EVs.

EVs aren't mandated by the set of rules proposed by the EPA Wednesday, but they will almost certainly offer the easiest path to compliance under extremely strict new requirements.

The California Energy Commission (CEC) wants replacement tires to be as efficient as original tires.

The demonstration tire shows Goodyear has the capability to make a tire with 90% sustainable content, even as it aims to launch a production tire with 70% sustainable content this year.

The EPA has enacted standards taking effect for the 2027 model year, applying to heavy-duty trucks, buses, and vans. But in some respects they're weaker than what California has drafted.

Real-world fuel economy of light-duty vehicles sold in the U.S. remained flat for the 2021 model year, at 25.4 mpg, according to the report, and the shift to SUVs plus relaxed Trump-era fleet rules may be to blame for this.

Russia's invasion of Ukraine and the resulting economic uncertainties have accelerated the timeline—leading to more spending on renewables, cleaner EVs, and a "historic turning point," the authority anticipates.

While New York, Washington, Oregon, Massachusetts and others have signed on, Minnesota is a maybe and Virginia's governor is reportedly calling the policy "ludicrous."

California sets more aggressive emissions standards and electric vehicle targets, and it's joined in doing so by a growing group of states.

The automakers face off versus a coalition of 17 state governments opposing a significant portion of the auto industry and rallying for greater emissions

One in 10 U.S. drivers burn 32% of gasoline used in U.S. light-duty vehicles, and these users burn more gasoline than the bottom 60% of drivers combined.

The Sportage Hybrid has recently been rated at up to 43 mpg—beating the most efficient versions of all its hybrid rivals without a charge port.

Well-timed signals can have a significant impact on emissions—equivalent to the CO2 absorbed by a forest 3.3 times the size of Atlanta, according to Inrix.