Fuel Efficiency

New tech tweaks from Hyundai, Kia aim to improve heating, cooling efficiencies

Nano cooling film and under-floor heaters could even help EV range

These cars have the longest driving range after a low fuel warning

It's still a good idea to stop for fuel when you can

These cars have the shortest driving range after a low fuel warning

Don't press your luck in one of these vehicles

Report: Premium fuel is now recommended for most light-duty vehicles

The shift relates to the rise in smaller, turbocharged engines

Junkyard Gem: 2012 BMW ActiveHybrid 750Li

A rare piece of hybrid history, found in a Denver car graveyard.

Junkyard Gem: 2013 Ford C-Max Hybrid SE

The very European replacement for the Escape Hybrid, found in Wyoming.

At Audi, the electric future makes room for hybrids

But the company still sees an all-electric roster by 2033

What is a hybrid car and how does it work?

What's the difference between serial, parallel and plug-in, and which is right for you?

It's not just Big Oil: A look at Big Corn, which is also suing over EPA emissions rules

Nearly 40% of the nation's corn crop goes in your tank. New EPA standards threaten that

U.S. drivers in this study have the lowest fuel costs in the world

And here's a projection of how gas prices could increase over the next 30 years

The 10 cheapest vehicles to own and operate over 5 years

Solid fuel economy helped these models rise to the top

U.S. gas prices are falling; demand at the pump is 'kind of shallow' despite summer travel

New driving habits, fuel-efficient cars, EVs and crude oil prices are playing a part

Real-world mileage standard for new vehicles rising to 38 mpg in 2031 under new Biden rule

That's a 2% gain per year, and consumer interest in hybrids should help with that

SUVs account for a quarter of all new demand for oil, 20% of the increase in emissions

SUVs have grown to just under half of global auto sales last year

Study tries to assess average driver's fuel cost over a lifetime

Wyoming residents drive huge miles, so they page a huge bill

Trucks with the best gas mileage for 2024

Not surprisingly, hybrid and diesel trucks are the most fuel-efficient

2025 Ram 1500's 'Hurricane' I6 tops V8 in fuel economy

The old 3.6-liter V6 remains the most efficient of the Rams

EV mileage rating rule to be revised in win for US automakers

The final rule softens the pace of improvements, then sharply ramps up requirements through 2032

The biggest gas-guzzlers of 2024: 'The Meanest List' is the opposite of greenest cars

12 least-efficient models — including one EV

The greenest cars of 2024: Vehicles that use the least fuel and cost less to operate

Seven electrics and five hybrids make the organization's list of 12