A large group representing manufacturers, transportation associations, and clean air and health advocates sent a letter to the House of Representatives...

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...

Millions of dollars in settlements from the VW diesel emissions cheating scandal will be made available for clean vehicle technology in California and...

Volvo Group stock fell after the Sweden-based truck and engine maker announced it was investigating the potential failure of a critical emissions control...

U.S. Senator Tom Carper (D-Del.) has introduced a bill to extend the Diesel Emissions Reduction Act (DERA) through 2021 to continue to provide EPA grants to...

Two Democratic senators who oversee environmental issues sent a letter on March 12 to Environmental Protection Agency Administrator Scott Pruitt, urging him...

Proposals for Phase 2 of the federal government’s Greenhouse Gas Emissions regulations are approaching a deadline for publication, but neither the...

Denso announced it has expanded its PowerEdge diesel aftertreatment products line to include light- and medium-duty trucks and vans.

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

The California Air Resources Board has announced a public hearing on a proposed rule change that would extend maintenance support for faulty emissions...

Navistar International has agreed to settle pending class action lawsuits that alleged that certain Navistar MaxxForce Advanced EGR engines are defective...

Costs. Maintenance. Engine life. Performance. Which powertrain has the advantage? Gasoline, or diesel? Which one is right for your fleet? Likely, it depends.

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

As part of a broad-reaching clean air program, California has proposed a low-NOx engine standard for heavy trucks. Truck and engine makers have said in the...

Four Republican lawmakers are spearheading an effort to audit a 2017 EPA study that found that glider kits emit substantially more harmful pollutants than...

The mayors of Los Angeles and Long Beach, California, are aiming for zero emissions at the ports or Los Angeles and Long Beach by 2035 as part of their...

Diesel-powered trucks appear to be in the crosshairs once again as California legislators, citing overwhelming public support, call for even tougher...

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

If a truck is running low-quality DEF, there are a number of issues that may occur, some of which could even void a vehicle’s warranty. This includes...

Ontario will increase its focus on truck emissions in 2020 as the Canadian province prepares to crack down on anyone that bypasses emissions controls – and...

Several members of Congress have asked the inspector general of the Environmental Protection Agency to look into allegations that there was improper contact...

The federal budget package approved by the U.S. House and U.S. Senate includes a 50 percent increase in funding for a clean air program that reduces...

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

After a court challenge stymied its efforts to give makers of glider kits a reprieve from challenged provisions of its greenhouse gas regulations, the...

The South Coast Air Quality Management District has selected a company to install a catenary system, essentially overhead electrical lines, which supplies...

A new study by the American Transportation Research Institute looked at a particularly notorious freeway interchange in Atlanta to determine the impact...