Fuel Efficiency

Sometimes, when science and technology issues have economic or political consequences, incorrect or misleading information and analyses can be propagated through the media, leading both decision makers and the public astray. A piece published in April by Forbes, covering the effects of the 2022...

As North America rounds out the final weeks of summer, plenty of discounts and deals remain on fuel-efficient, hybrid, and electric cars. The month of August sees a number of familiar nameplates remain as best buys, while a few newcomers arrive to represent excellent new values. Below are August's...

It's a technology that's been a sort of Holy Grail in the auto industry for at least a couple of decades. Now Mazda, one of the smallest global automakers, plans to introduce it in a radical new engine to be used in a future Mazda vehicle in 2019. It's called homogeneous charge compression...

The small SUV segment has ballooned into a hugely important market for many automakers, as consumers continue to shift from traditional sedans to crossovers and other utility vehicles. The smallest of the expanding array of SUVs on the market offers the flexibility of a hatchback or wagon, combined...

Ten days ago, when the first 30 Tesla Model 3 electric cars were delivered to their owners at a much-publicized Handover Party, we didn't get full information on the latest Tesla model. The company didn't discuss battery capacity in kilowatt-hours, for instance, giving range in miles instead, nor...

The U.S. Department of Transportation said yesterday the NHTSA is preparing to revise corporate average fuel economy requirements for model years 2022 through 2025. The proposed version of those regulations, which was issued by the Obama Administration in 2012, included steady increases for each of...

Not so many years ago, a 1.2-liter engine would only have been found in the U.S. in the smallest and least impressive of subcompact cars. It might have been a 3-cylinder, and certainly wouldn't have had even 100 horsepower. But times change, and engines of that size will soon be found even in the...

Both Mercedes-Benz parent Daimler and Volkswagen Group have approved new plans to retrofit older diesel-powered vehicles with new software at no cost to owners. The largest number of such cars will be in Europe. The news comes amid the latest allegations surrounding German automakers and their...

The iconic Jeep Wrangler is a tough vehicle to make fuel-efficient. Its separate frame and body add weight, and it has all the wind-cheating grace of a small municipal hospital. The Wrangler SUV only gets redesigned every 10 years or so, so each new generation is a big deal to Jeep fans. DON'T...

Every now and then, resourceful journalists dredge up automotive news before it emerges in a sanitized press release from the maker in question. So it is with the pricing on the 2018 Chevrolet Equinox Diesel, one of two diesel-powered compact crossover utility vehicles expected to hit the U.S...

A global push to reduce vehicle emissions and create cleaner air for future generations has been underway for half a century now. However, while many governments around the world have introduced lower emission and higher fuel-efficiency standards for passenger cars, another large contributor to...

It's taken a while, but Oregon will now have a state electric-car purchase incentive that largely matches those in its neighbor to the south, California. First discussed several years ago, the idea of a purchase rebate for cars that plug in hadn't made it through previous legislative sessions. This...

As corporate average fuel economy requirements that started in 2012 continue to tighten, automakers have turned to an entire arsenal of tactics to reduce the fuel their vehicles burn. Downsized and turbocharged engines, transmissions with many more gears, lighter-weight structures, better...

One of the greatest challenges faced by modern electric cars is the vehicle's range, which is largely proportional to the energy capacity of the battery. Range anxiety often keeps buyers out of electric cars and in their fossil-fuel powered counterparts. Most of the attention given to solving the...

Honda's smallest of vehicles—the Fit hatchback—has received several updates for the new model year, its fourth for the current-generation version. The 2018 Honda Fit now has incremental styling modifications, additional safety features, a new optional audio system with Android Auto and...

Purchasing a hybrid vehicle makes for a slightly different ownership experience than a traditional gasoline-only car. There are always a few tips and tricks for owners to return the best mileage and range from electrified vehicles, and now a 2013 Ford C-Max Hybrid owner has shared his secrets...

One of the earliest acts of the Trump Administration was to announce that it would re-examine emission rules finalized by the EPA in the waning days of the Obama Administration. Making good on that promise, EPA administrator (and climate-science denier) Scott Pruitt reopened the commenting period...

What's a truck? If you tell your average suburban family that they're hauling their kids to school and sports practices in a truck, many will push back. "It's an SUV," you'll likely hear, or perhaps, "it's called a crossover"—short for crossover utility vehicle, or a car-based SUV. DON'T...

Fuel economy and emission standards have been a contentious issue in recent months as the auto industry and government officials clash over regulations and their potential benefits. Earlier this year, one of the largest pieces of evidence against more stringent fuel economy regulations came from...

Under the new administration of President Donald Trump, the EPA has reopened comments on its decision to finalize emission rules for 2022 through 2025 vehicles. Meanwhile, the NHTSA—which sets fuel-economy rules that have to correspond to EPA limits on carbon-dioxide emissions—hasn't...