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EPA Plans Cheaper Trucks, $12B Savings, 4% NOx Rise

7/10/2026

Center

EPA Loosens Rules

The EPA proposal would allow sale of heavy-duty engines that fail the 2023 Biden-era tailpipe standards nationwide.
Agency officials announced a plan to loosen heavy-truck emissions rules nationwide to reduce compliance costs.
Warranty would drop to 100,000 miles and mileage-increase rules delay significantly until 2030.
EPA says could save $12 billion ($6k truck) while groups fear 4.2 % NOx rise by 2030.

Left

Trump Pardons

President Donald Trump pardoned nine men convicted of tampering with diesel truck emissions controls, sparking criticism from environmental advocates.
The U.S. Environmental Protection Agency proposed loosening limits on smog-forming emissions from heavy-duty trucks nationwide.
Lee Zeldin said the revisions keep Biden’s numeric limits on nitrogen-oxide emissions.
The agency said the changes preserve 90 percent of cuts to nitrogen-oxide pollution linked to asthma.

History

Historical Context

In 1998 the EPA tightened diesel engine standards, building on the 1990 Clean Air Act amendments that began curbing NOx and particulate emissions. A 2007 rule forced ultra-low-sulfur diesel with a 15 ppm limit and added particulate filters, further reducing pollution. The agency’s current proposal to roll back those limits faces political opposition and could reverse earlier health gains.

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EPA Loosens Rules

The EPA proposal would allow sale of heavy-duty engines that fail the 2023 Biden-era tailpipe standards nationwide.
Agency officials announced a plan to loosen heavy-truck emissions rules nationwide to reduce compliance costs.
Warranty would drop to 100,000 miles and mileage-increase rules delay significantly until 2030.
EPA says could save $12 billion ($6k truck) while groups fear 4.2 % NOx rise by 2030.

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