EPA - U.S. Environmental Protection Agency

07/14/2026 | Press release | Distributed by Public on 07/14/2026 12:08

ICYMI: Across the Board Coverage of the Trump EPA’s Proposal to Save American Truckers Billions and Remove DEF Deratements Entirely

ICYMI: Across the Board Coverage of the Trump EPA's Proposal to Save American Truckers Billions and Remove DEF Deratements Entirely

July 14, 2026

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EPA Press Office ([email protected])

WASHINGTON - Last week, at the Great American State Fair on the National Mall, U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin unveiled a proposal to reverse the unattainable 2023 NOx emission reduction provisions created under the Biden Administration. This commonsense proposal will save American truckers $12 billion and up to $6,000 per vehicle on new truck purchases, delivering on the Trump Administration's efforts to lower costs for American families.

This proposal also responds directly to calls from diesel operators to completely eliminate deratements caused by Diesel Exhaust Fluid (DEF) system failures. The Trump EPA is proud to deliver on President Trump's mandate to lower costs, revitalize domestic auto manufacturing, and put hard working Americans first, all while protecting human health and the environment.

Read extensive coverage below on the Trump EPA's latest proposal.

"The Trump administration is proposing to slash Biden-era truck emissions regulations in a move officials say would save the trucking industry about $12 billion and ease supply chain costs that make everyday goods more expensive for Americans."

"The Environmental Protection Agency recently announced that manufacturers could sell car parts that defy California's 'green' regulations in the other 49 U.S. states. Under the EPA's advisory opinion, manufacturers can demonstrate compliance with the federal Clean Air Act through Specialty Equipment Market Association (SEMA) emissions certificate program rather first obtaining approval from California regulators."

"The EPA was our main character this week as the market responded to its Freedom to Fix directive regarding DEF maintenance. Two manufacturers also announced their engine software update plans regarding EPA's spring directive regarding engine derates."

"The Environmental Protection Agency has proposed significant changes to its 2027 heavy-duty diesel emissions rule that could reduce the cost of next-generation trucks while easing some of the uncertainty that has complicated fleet buying decisions. The EPA proposed rule would leave in place the stringent nitrogen oxide (NOx) emissions standard scheduled to take effect with 2027 model-year heavy-duty diesel engines. However, it would delay some of the rule's costly implementation requirements, including longer useful-life requirements and expanded emissions warranties, while eliminating mandatory diesel exhaust fluid (DEF) engine derates."

"U.S. Environmental Protection Agency (EPA) administrator Lee Zeldin is announcing a proposal estimated to save American truckers $12 billion through 'commonsense revisions to unnecessary and unworkable Biden-era compliance requirements."

Transport Topics: EPA proposes cost-saving revision to 2027 truck emission ruleExit EPA's website

"…In a speech at the America 250 Great American State Fair unveiling the plans, EPA Administrator Lee Zeldin said: 'Manufacturers spoke up, suppliers spoke up, fleets, dealers and drivers all spoke up. They warned that the new requirements couldn't be met in time, that it would drive up costs, that it would force companies to rush products to market before they were ready. In the past, Washington wasn't listening. However, the Trump EPA is."

"…The savings on new truck purchases could reach up to $6,000 per vehicle, according to EPA, on top of the increased productivity operators are currently losing when deratements cause sudden speed loss on the road. EPA is also specifically proposing to scale back the emissions warranty requirements that added the largest single cost to the trucking industry... 'Americans depend on reliable trucks to move essential goods across the country,' Zeldin said. 'If finalized, these changes will help manufacturers keep improving their vehicles without being forced to rush products to market before they're ready."

"…The Biden-era regulations required OEMs extend warranties to 450,000 miles from 100,000 and useful life limits to 650,000 miles from 435,000 miles. OEMs claimed those requirements passed upwards of $20,000 in added cost onto fleets - a number OEMs think now could be cut in half."

"American truckers are expected to save $12 billion thanks to the Environmental Protection Agency and Administrator Lee Zeldin rolling back Biden-era regulations and addressing what he called a 'nationwide disaster.' The administration plans to address manufacturers' concerns, consumer pricing, and truckers' safety by addressing system failures."

"…It effectively ends deratements for new vehicles,' [T.J. Wilson, deputy director of rural policy for the America First Policy Institute] said. 'It does a variety of other things that are going to show that you can have strong clean air goals and strong environmental protections, while also not killing entire industries and constraining the livelihood of folks."

"...Cummins Chair and CEO Jennifer Rumsey traveled to Washington, D.C., this week for an event where federal environmental regulators unveiled a proposal to change certain rules governing truck emissions-control systems... 'We're very pleased to have that (proposed) rule come out,' Rumsey told The Republic following the event. 'We've been working very collaboratively with the EPA, and so getting that draft rule out is an important milestone for us as we continue to move forward with our product launches."

"...The proposal is the latest step in the Trump administration's efforts to reduce emission standards in the transportation sector on the basis of lowering costs for manufacturers. 'Even if you've never driven a truck in your life, when it costs less to move goods, it costs less to buy them,' Zeldin said. 'Those savings get passed down to you at the grocery store and the hardware store on nearly everything a truck delivers."

"…The updated proposal, if finalized, would make several important changes: Warranty: Maintains the current 5-year/100,000-mile warranty, rather than a higher mileage warranty. Useful life: Delays the scheduled increase in regulatory useful life by three years, so the 11-year/650,000-mile warranty for heavy-duty trucks will take effect in 2030."

"…Industry leaders said the proposal addresses long-time concerns about the cost and reliability of complying with the existing emissions standards. They argued that additional time to meet the rule's requirements would allow them to better test new emissions technology before it reaches customers."

"…The Trump Administration is taking a commonsense approach to alleviating burdensome diesel regulations on behalf of farmers, truckers, and small business owners who were crushed by unworkable environmental activist demands that became costly mandates,' said U.S. Small Business Administrator Kelly Loeffler. 'The EPA, SBA, and USDA have made steady progress toward ending DEF deratements, removing unreliable sensor requirements, and offering operators more practical compliance options."

"Today, American Trucking Associations President & CEO Chris Spear joined Environmental Protection Agency Administrator Lee Zeldin for an event on the National Mall to celebrate the rollback of onerous, unachievable heavy-duty NOx standards implemented by the previous administration… 'We appreciate EPA taking our concerns seriously and acting to provide commonsense flexibility for the manufacturers, fleets, and 8.4 million hardworking men and women who keep this country moving…' [said American Trucking Associations President & CEO Chris Spear]."

EPA - U.S. Environmental Protection Agency published this content on July 14, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on July 14, 2026 at 18:08 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]