emissions

The DOT now argues that increased fuel economy standards will make cars more expensive and that will make the vehicle fleet less safe.

The federal agency for protecting the environment gave its seal of approval to cleaner California rules that a big portion of the U.S. vehicle market has already adopted.

A challenge from oil and gas companies has fizzled, but there are plenty of other ways that a Trump administration could meddle with California regulators.

Toyota may be emboldened to once again challenge California after a Trump win.

The man in charge of BMW sees China as the only way to comply with upcoming regulations.

Bridgestone's found a way to make its latest tire more sustainable and it happens to be for an EV.

Italy thinks Europe's looming gas-engine ban "must be changed."

Detritus from tires could be as bad as—or worse than—tailpipe emissions, but Ford thinks it has a way to cure that problem.

Current federal fuel economy rules use petroleum-equivalent efficiency numbers for EVs that effectively incentivize their sales.

While regulators are seeing them as EVs, Bloomberg's energy analysis arm suggests they add oil demand if bought instead of battery-electrics.

Transportation-related spikes in deadly air pollution this past year were the most severe recorded in the 25-year history of the annual American Lung Association report.

Tougher emissions targets will likely lead to more EV sales, but environmental groups say they're again a step behind California.

With tweaks to the final rule, it projects 56% EV sales will be needed by 2032, along with at least 13% plug-in hybrids.

Particles might be collected by exposing them to an electric field and then sweeping them away.

The Biden administration may "slow the pace at which auto manufacturers would need to comply" with tighter emissions rules.

It's the largest civil penalty ever secured under the Clean Air Act and the second-largest environmental penalty ever.

Americans' continued shift toward larger vehicles and trucks boosted the average CO2 emissions per vehicle from 2017 to 2022, but rising sales of hybrids and EVs helped offset it.

The Republican-controlled House appears to believe these targets constitute an EV mandate—even though the EPA's proposal clearly lays it out as the opposite.

The parent of Dodge, Jeep, and other brands claims the California Air Resources Board (CARB) "improperly adopted" a 2019 deal negotiated between the regulator and four automakers.

Yes, while some metrics suggest that SUVs have a larger footprint than cars, Polestar is suggesting that its SUV is greener.