Federal emissions rules for cars and trucks are set years in advance, but they are rarely set in stone. As regulators, ...

EPA’s plan to stop regulating tailpipe emissions forces states to make a choice: compensate by clamping down harder on pollution within their borders, or risk violating the Clean Air Act. That’s the ...

A group of truck manufacturers have filed a lawsuit against California regulators, contending that the Golden State lacks the authority to enforce its heavy-duty vehicle emissions standards, which are ...

For decades, California has made environmental policy as if it were a sovereign nation, not an equal member of the Union. The federal government granted it this privilege on the premise that the ...

The U.S. Department of Justice has filed a pair of complaints seeking to stop California from enforcing emissions standards for heavy-duty trucks. The DOJ filed complaints in two federal courts on ...

The Trump administration has begun the formal process of rolling back federal fuel economy standards, marking a significant ...

ALL RIGHT. THANKS, CHRISTINE, FOR THAT WARNING THERE. A STATE LAWMAKER WANTS TO END EMISSIONS TESTING FOR DRIVERS IN PENNSYLVANIA. REPUBLICAN STATE SENATOR WAYNE LANGERHOLC SAYS HE WANTS TO INTRODUCE ...

Mercedes-Benz USA and parent company Daimler AG have agreed to pay $149.6 million to settle allegations the automaker ...

The U.S. Energy Dept. has withdrawn its federal definition of zero-emissions buildings and ended related technical assistance that many states and owners used as a benchmark. December 5, 2025 The U.S.

DATA FROM THE TRUMP ADMINISTRATION. A GROUP OF WISCONSIN LAWMAKERS WANT TO GET RID OF VEHICLE EMISSIONS TESTING. 12 NEWS OBTAINED A LETTER THAT MEMBERS OF THE STATE LEGISLATURE WROTE TO FEDERAL ...

Mercedes-Benz and Daimler AG have agreed to a nearly $150 million settlement over accusations of using defeat devices to ...