Seemingly acting out of character, the Environmental Protection Agency on Nov. 13 announced it will launch a rulemaking to further cut the emission of...

The U.S. EPA has accused Fiat Chrysler of failing to disclose engine management software that increased air pollution in 104,000 diesel-powered Ram 1500...

Cummins showed off an emissions reduction concept that promises drastic reductions to NOx and particulate matter emissions in future diesel engines.

Unlike passenger vehicles, which require biennial smog checks in California, heavy-duty diesel trucks are not currently required to undergo regular...

Pennsylvania is accepting grant applications to replace, repower, or retrofit fleet diesel-powered trucks, buses, and other vehicles and equipment.

More than 37 percent of all diesel medium and heavy duty commercial trucks registered in the U.S. are now equipped with newer technology clean diesel...

The mayors of Paris, Mexico City, Madrid, and Athens have pledged to ban diesel vehicles from their cities by 2025 in an effort to improve air quality.

The EPA is serious about further reducing exhaust emissions and boosting vehicle fuel economy. But the agency official’s remarks suggested that it intends...

The California Air Resources Board has penalized LKQ Corporation for selling used diesel particulate filters, which is illegal in the State of California.

Southern California Gas and Western Milling unveiled the first of a planned 30 new ultra-low emissions trucks the company will deploy at its operations in...