Investigators probing U.S. models of Mercedes-Benz sold with diesel engines have found software, possibly illegal under EPA rules, that helped them pass emission tests. Such software may be similar to that notoriously used in 580,000 vehicles sold by VW, Audi, and Porsche from 2009 through 2015 in what became the Volkswagen diesel emission... Mercedes-Benz gets its own diesel emission cheating questions now
Investigators probing U.S. models of Mercedes-Benz sold with diesel engines have found software, possibly illegal under EPA rules, that helped them pass emission tests. Such software may be similar to that notoriously used in 580,000 vehicles sold by VW, Audi, and Porsche from 2009 through 2015 in what became the Volkswagen diesel emission... 
With the release of proposed new and lower fuel-economy rules expected from the NHTSA by March 30, many eyes have turned to the powerful California Air Resources Board. The state's pioneering role in reducing emissions and cutting air pollution predates even the existence of the U.S. Environmental Protection Agency. That agency, now run by Scott... 
It's been clear that under the Trump administration, the NHTSA and EPA plan to roll back linked fuel-economy rules and emission limits on new vehicles. Now a possible justification that will be used has emerged—and it's not the one many advocates had expected. According to a Bloomberg report on Monday, the fuel-economy proposal due March 30... 
While VW is moving toward the end of buybacks, payments, and fines for eight years of cheating on diesel emission standards, Fiat Chrysler is still in the thick of its own diesel mess involving Jeep SUVs and Ram trucks. On February 2, the U.S. Justice Department offered to let the company move forward if it recalls all 104,000 EcoDiesel models of... 
As automakers await the National Highway Traffic Safety Administration's new fuel-economy rules for 2022 through 2025, due March 30, regulators from California and Washington are still hammering out the specifics. A meeting between state and federal regulators on fuel-economy and emissions targets took place on Monday as both sides attempt to... 
One year ago at the Detroit auto show, a company called Achates Power unveiled models of a new kind of internal-combustion engine. With opposed pistons in the middle and crankshafts at either end, it was sufficiently different to startle most visitors who paid attention. That engine came with some audacious claims, too: How about an EPA combined... 
Pick-ups and SUVs are rapidly taking over the American automotive landscape, but there's at least one measure in which it benefits an automaker to sell fewer of those vehicles. In the Environmental Protection Agency's latest "Light-Duty Automotive Technology, Carbon Dioxide Emissions, and Fuel Economy Trends" report, Mazda was named as the... 
Though the Environmental Protection Agency has already ruled on ethanol-blended gasoline mixtures for 2018, that hasn't stopped ethanol advocates from pushing for a higher 30-percent blend for non-flex-fuel vehicles. The latest call for ethanol comes from corn-state ethanol refiners, farmers, and an ethanol-producer trade association, all of whom... 
Just one year into the Trump administration, numerous high-level government officials have denied, downplayed, and eliminated government mentions of climate change and its effects. The man running the Environmental Protection Agency—who is charged with protecting the nation's air, water, and land from pollution—sued it more than a...