Fuel Efficiency

Next Tuesday evening, the 2016 Toyota Prius hybrid will make its world debut in Las Vegas, kicking off what its maker calls "the next era of an icon." "We’re pulling out all of the stops for this exclusive event to celebrate the future of Prius in a truly spectacular way that will be anything...

Corning hopes its Gorilla Glass could be used to a greater degree in cars.

The 2016 Smart ForTwo is the first entirely new version of the European two-seat minicar since that vehicle was launched in the late 1990s. And it's a much better car, with more power, a choice of manual or automated transmissions, modern comfort and interior features, and fuel economy that's...

The Mitsubishi Mirage minicar has been an unexpected success for the U.S. arm of what's usually described as "struggling Japanese automaker Mitsubishi." Sales volume after its 2014 launch was roughly double what the company said it expected to sell, and the Mirage may prove that a market remains...

It's all about the asterisk, it turns out. Most buyers likely assume that the conditions for rating a new car's fuel economy and engine performance are identical. For at least one carmaker--Ford--and possibly others as well, that turns out not to be the case: Different gasoline formulations are...

Addressing production bottlenecks could cause gas prices to drop even further, a new report says.

Cadillac's boss says the carmaker will eventually sell diesels in the U.S. again.

U.S. average fuel economy did not increase dramatically between 1923 and 2013.

Fleet operators appear positive about proposed fuel-economy standards.

With a midterm review coming up to look at progress on meeting Corporate Average Fuel Economy regulations so far, you can expect some gloom and doom from automakers. Still, industry consensus says the second half of the standards, for model years 2018 to 2025, won't change in a major way. The...

A 2014 Toyota Prius C owner test drives a 2015 Mitsubishi Mirage.

A German government study finds that transportation-related emissions have increased since 1990.

The military is investigating a new jet engine design that could boost efficiency.

The range of small and smaller SUVs seems to expand almost monthly, and the latest entry is the 2016 Mazda CX-3. This crossover utility vehicle slots below the compact Mazda CX-5 in the "Zoom Zoom" maker's lineup. The company expects the CX-3 to appeal more to couples and empty-nesters than to...

Consumers will need to be better educated regarding the benefits of greener cars, analysts say.

The 2016 Mazda MX-5 Miata is the newest generation of the world's most popular sports car. The iconic two-seater passed the British MGB more than a decade ago to become the highest-volume sports car in the world, and the latest iteration brings it into the current decade. In fact, we'd argue that...

The 2016 Chevrolet Colorado Duramax diesel will go on sale this fall.

Buick could get its own version of the Opel Adam minicar, but not until 2018 at the earliest.

Two years after the unveiling of a concept car that previewed it, the 2017 Infiniti Q30 compact luxury hatchback will launch at the Frankfurt Auto Show in September. Nissan's luxury brand confirmed the launch yesterday, for the same show where that concept--in reality a thinly-disguised version of...

Ram 1500 EcoDiesel production is up, but sales and dealer stocks are down.