This surprising settlement involves heavy-duty Volvo truck emissions violations in California.

A California air regulatory agency announced a settlement Monday with Volvo Group North America over emissions violations, ...

The U.S. Department of Justice has ordered a recall of 600,000 Ram trucks as part of a settlement that directs engine maker Cummins Inc. to remedy environmental damage it caused when it illegally ...

Emission control systems in modern cars have slashed air pollutants such as particulate matter and nitrogen oxides. But these systems face two major challenges: carmakers cheating on pollution tests ...

GM has issued an emission recall for certain units of the 2025 Chevy Silverado 1500 and 2025 Chevy Silverado HD pickup trucks that were potentially produced with incorrect Vehicle Emissions Control ...

Inrecent years, independent research has helped clear up many myths within the Pontiac hobby. One area, however, that still remains shrouded in mystery is the midyear emissions system change that ...

Emissions-control technology for mobile sources has developed in a series of interactive steps with the promulgation of emissions standards for new vehicles and engines and for fuel regulation. For ...

Wyoming Sen. Cynthia Lummis (R-Wyoming) has introduced legislation that would effectively undo decades of Environmental Protection Agency (EPA) rules for diesel engines and ban emissions control ...

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