Fuel Efficiency

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?

EV sales will rise from 3 million in 2020 to 66 million in 2040, Bloomberg projects—and it appears that ICE sales peaked in 2018.

Dementia is the latest health issue potentially tied to the fine particulate emissions produced by vehicle tailpipes.

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.

Here are the widely available cars only fueled by gasoline that achieve 50 mpg combined or more based on EPA ratings. They all start under $30,000.

The wind-sail project uses an inflatable sail and telescopic mast to harness the wind, boosting a ship’s fuel efficiency by up to 20%.

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

Such a thermal efficiency, only claimed previously by racing engines, isn't yet offered in any production model.

Virginia is the next state to adopt stricter standards on the way to a potential EV mandate.

Even Big Oil now admits we're past the once-hypothetical point, and is pivoting for relevance in a new energy economy.

As automakers voiced support for a higher mpg standard, they suggested targets lower than those set during the Obama administration.

Five of the top 10 non-gasoline models with the steepest sales gains in 2019 and 2020 were diesels, according to an industry group.

Although EV sales increased 50%, a massive shift to less-efficient SUVs offset any carbon reduction.

In the last days of the Trump administration, officials again yielded to lobbyists in offering a break on federal fines for gas guzzling fleets.