Fuel Efficiency

Despite some alarmist reporting, President Donald Trump hasn't abolished the EPA's vehicle emission limits. Nor has he wiped out corporate average fuel-economy rules, set by the NHTSA. So far, he's done two things: signed an executive order reopening the comment period for 2022-2025 EPA emission...

It hasn't been the greatest of years for the Toyota Prius hybrid, the Japanese carmaker's flagship product. The fourth generation hybrid hatchback debuted as a 2016 model into the teeth of continued low gasoline prices, and its radical design language apparently turned off at least some potential...

The 2017 Kia Optima Hybrid is one of a pair of hybrid mid-size sedans from the Korean maker Hyundai-Kia. It shares its underpinnings, though not a single body panel or styling flourish, with the higher-volume Hyundai Sonata Hybrid. We found it to be a comfortable, stylish sedan that gave us good...

When the first Chevrolet Cruze Diesel was launched back in 2014, it made a lot of sense. Diesel was in vogue. German manufacturers were pushing diesel power in a huge way, with Volkswagen's "Clean Diesel" leading the charge. Oh, how things have changed. DON'T MISS: Volkswagen diesel scandal - all...

Given the current political landscape in Washington, it's not unreasonable to worry about the future of U.S. efforts to combat climate change. The Trump Administration has embarked on an explicit mission to undo all Obama Administration efforts to reduce carbon emissions. Climate-science deniers in...

The auto industry tends to oppose, viscerally and viciously, all attempts to regulate any aspect of its products or business operations for any reason. With President Trump in the White House, the industry has succeeded in getting the comment period reopened for the EPA emission standards finalized...

At the 2017 Geneva auto show, General Motors announced the sale of its entire European operations—comprising factories and the Opel and Vauxhall brands—to PSA Peugeot Citroën. German Opel and its British Vauxhall sibling have represented GM's main presence in Europe for decades...

A common refrain among critics of current and future fuel-economy standards is that the need to comply with them produces job cuts in the auto industry. It's a theme picked up by President Donald Trump during a much-publicized visit to Detroit last week. In the hometown of the Big Three U.S...

The mid-size sedan was once the default for a majority of U.S. car buyers. While the segment's position has been eroded by the rise of crossover utility vehicles of many sizes, these sedans still remain quite popular. Given the number of options available among hybrid mid-size sedans, that should...

However you choose to view the 2017 Kia Niro hybrid—Kia says it's a crossover utility, we call it a wagon—it's a good-looking and relatively capacious small car. The debate over segments comes because the Niro has neither the ground clearance of a utility vehicle nor available all-wheel...

Automakers may gradually be putting more emphasis on plug-in electric cars and conventional hybrids, but they are far from done with plain old internal combustion. Over the past few years, automakers have applied more technology to a wider array of cars in order to boost their efficiency to meet...

Tomorrow is expected to be the day when President Donald Trump announces the EPA will reopen the comment period for the vehicle emissions standards it finalized in the waning days of the Obama Administration. The event will likely be accompanied by predictable language: Trump will be...

Automakers are expected to offer greater incentives on sedans and hatchbacks as sales of these models continue to slow. Overall new-car sales fell 1.1 percent in February compared to the same month a year ago, according to Autodata Corp. But sales of passenger cars were hit particularly hard as...

Once again, it's time to look at the month's best deals on hybrids, plug-in hybrids, electric cars, and fuel-efficient gasoline cars. Deals for March include several new models, as well as a couple of holdovers from the previous model year. Some manufacturers seem to be more aggressive with...

Even with a new leader apparently at odds with its mission, the Environmental Protection Agency continues to function on some level. On Thursday, EPA administrator Scott Pruitt said carbon dioxide released by human activity is not a major cause of climate change, directly contradicting the...

Automaker lobbyists continue to push back against the stricter fuel-economy and emissions standards scheduled to take effect in the U.S. over the next decade. Many of their arguments center on costs—not only to the carmakers themselves, but also to car buyers. Regulators and automakers...

The average fuel economy of the new cars and light trucks sold in the U.S. is appreciably higher than it was 10 years ago. The University of Michigan Transportation Research Institute has demonstrated that in its regular reports calculating new-car average fuel economy since October 2007. But...

Diesel engines will continue to appear in pickup trucks, European luxury SUVs, and at least a few mass-market crossover utility vehicles. Two of those are the Chevrolet Equinox and Mazda CX-5 crossovers that will launch for the 2018 model year. But the future of diesel in U.S. passenger cars...

Crossovers are so popular right now that several automakers are even trying to pass off conventional hatchbacks as high-riding utility vehicles. The latest example of this trend is the Honda WR-V, a new pseudo-crossover for the Indian market. Despite the extra plastic body cladding and...

Lobbyists for the world's automakers continue to ask the new presidential administration to revisit an EPA decision to finalize emissions standards through 2025. Just days after the November election, the Alliance of Automobile Manufacturers wrote President-Elect Trump to ask that he reverse the...