Fuel Efficiency

If you're looking for a small hatchback that delivers high gas mileage and almost unparalleled flexibility, the all-new 2015 Honda Fit should probably be at the top of your list. The new Fit has become a more important car for Honda now that it's built in Mexico, and that's reflected in many of the...

So, you've done the right thing: You've decided your next car will be considerably more fuel-efficient than the one you drive now. That's great news. But, have you considered how it's built--and more to the point, what it's built out of? A new peer-reviewed paper from the Oak Ridge National...

Car shoppers today are spoiled for choice when it comes to fuel-efficient vehicles. When else in history have we had the choice between gasoline, diesel, biofuel, natural gas, hybrid, plug-in hybrid and full battery electric vehicles? When it comes to actually putting fuel in your tank, many turn...

Auto writers tend to like Mazdas; they generally perform and handle well, and are far more fun to drive than the anodyne Fords, Hondas, and Toyotas that outsell them in the compact and mid-size categories. The newest crop of Mazda cars and crossovers, built around the company's highly...

The trend of increasing average fuel economy continues.

Three-cylinder engines were popular with Japanese automakers back in the 1980s and 1990s, as a way of reducing weight and fuel consumption in smaller vehicles. Now, they're making a resurgence, as low weight and improved efficiency are once again at the forefront of automakers' development tasks...

With highway economy of 36 mpg, the 2015 Chrysler 200 isn't the most fuel-efficient vehicle we've written about recently, but it has an important job to do. The old model, despite being widely loathed by anyone forced to rent one at airport desks around the country, sold in large numbers in the...

California is different from the rest of the United States. And its vehicle mix turns out to be very different too. A simple glance at the state's rainbow of cultures and languages, its record of social and technological innovation, and its varied climates--a five-hour drive takes you from ocean...

Is it possible to make a gasoline engine so efficient that it would emit less carbon dioxide per mile than is created by generating electricity to run an electric car over that same mile? Small Japanese carmaker Mazda says yes. In an interview published last week with the British magazine Autocar...

Agricultural and construction equipment is getting greener to meet stricter EPA standards.

How do you measure your gas mileage? Do you take mileage readings after each tank, refill to the brim, calculate how much you've used...and repeat at each fill-up? Or do you press the trip computer button a few times to bring up your tank average? If you're doing the latter, there's always the risk...

The Mini is one of the most iconic vehicles on the roads, but the car has changed--and grown--rather a lot since its introduction in 1959. Most of that change has happened since BMW took the reins and launched its MINI brand in 2001, and we're now on the third generation of the BMW-developed...

The 2014 Mitsubishi Mirage is unusual among the latest breed of gas-sipping small cars. There are no fancy tricks employed to hit its 37-40 mpg combined EPA ratings, no turbochargers or hybrid systems. It's simply small, light, aerodynamic and uncomplicated. Those qualities are also allowing...

Reporting gas mileage is a tricky subject for automakers. Naturally, you want your car to be seen in its best light. You test it according to regulations, and publish what you find. Sometimes, it can go wrong. Hyundai and Kia found this out the hard way recently. Now, Hyundai's done it again--but...

As vehicles all over the world slowly get more fuel-efficient, the energy required to make them--and their thousands of parts--is coming to represent a higher proportion of their lifetime energy footprint. And this, in turn, is leading carmakers to focus on cutting the energy required to...

The green car scene has never had more variety than it does today. You could, if you wanted to, walk into a dealership today and buy regular gasoline and diesel cars, natural gas vehicles, hybrids, plug-in hybrids, electric vehicles and soon, hydrogen cars. And there are plenty more on the horizon...

Tell us what car you would replace this Volkswagen Jetta TDI with.

Analysts believe "Peak Car" may arrive in the next decade, permanently capping sales at 100 million per year.

Walmart's concept truck features a radical aerodynamic body and turbine range extender.

Running a diesel engine on gasoline could significantly improve efficiency, researchers say.