Fuel Efficiency

The 2016 Toyota RAV4 Hybrid is the first mass-market crossover utility with a hybrid powertrain since the demise of the Ford Escape Hybrid in 2012. Granted, there's the luxury Lexus NX hybrid (using some of the same underpinninngs), and the low-volume Subaru Crosstrek Hybrid, with a mild-hybrid...

The entire auto industry was startled when Fiat Chrysler said two weeks ago it would end production of its Dodge Dart compact car and its Chrysler 200 mid-size sedan. The company intends to use the plant capacity freed up to build more light trucks, meaning its popular crossover utilities and...

The U.N.'s aviation agency drafted the first-ever emissions rules for airplanes.

New European emissions-testing rules would allow carmakers to exceed legal limits of nitrogen oxides.

Bosch claims its "active gas pedal" can yield fuel-economy savings of up to seven percent.

West Coast states are on track for major cuts in oil consumption, the Union of Concerned Scientists says.

Ford may target the Ram 1500 EcoDiesel with an F-150 that uses the same engine as Land Rover's Td6 SUVs.

Jeep is still planning diesel and hybrid versions of the next-generation Wrangler.

Measuring the energy efficiency and environmental friendliness of different vehicles is easy if they're powered by gasoline, less so when the energy comes from grid electricity. This leads to perpetual debates over the assumptions used on the source of electricity and its carbon footprint, among...

Elio Motos hopes a U.S. Department of Energy loan will provide the funding it needs.

Stanford students discuss competing in the World Solar Challenge.

NASA researchers are experimenting with hybrid aircraft.

These are the best deals on green cars for January 2016.

Average fuel economy for 2015 fell 0.1 mpg compared to 2014, researchers say.

A proposed rule change could prevent Elio Motors from selling its three-wheeled car.

The European Parliament voted against proposed emissions rules that would have given automakers significant leeway to exceed legal limits.

Low gas prices aren't having the positive economic impact some had expected.

After spending four days and covering 440 miles with a new Toyota Prius, we can say that in our first real-world testing, the car delivers on its 50-mpg promise. We got daily readings of 50 to 54 miles per gallon in a mix of three-quarters highway miles and one-quarter low-speed local use. Our...

Honda believes it won't be able to sell conventional internal-combustion engines in China by 2025.

OPEC believes battery-electric cars will account for just one percent of global sales in 2040.