- Trump announced a pardon on Truth Social for diesel tuners convicted under federal Clean Air Act.
- President said 9 defendants were prosecuted for fixing cars and attacked Biden-era enforcement.
- Debate over diesel emissions systems, public health, and regulation reignites across America.
President Donald Trump has granted pardons to nine people convicted of violating federal diesel emissions laws, arguing they were unfairly targeted for what he described as simply repairing vehicles. The move adds another chapter to his administration’s dramatic shift away from aggressive enforcement in this area.
Trump announced the decision in a post on Truth Social that left little doubt about how he views the prosecutions. He wrote that it was his honor to sign pardons for people who were “persecuted by the Biden Administration,” referring to them (in some cases very generously) as people who were punished for “fixing their car.”
Related: AI Used To Rig Prices At 1,700 California Gas Stations, Lawsuit Says
He described the cases as part of the “Weaponization and Stupidity” the country endured before he was elected president for a second term, declaring “I AM SETTING THEM ALL FREE, RIGHT NOW!”
The pardons cover mechanics, shop owners, and diesel tuners convicted of bypassing federally required emissions controls. Prosecutors argued they sold or installed software and hardware that disabled pollution control systems, allowing diesel trucks to operate without equipment required under the Clean Air Act.
Among those receiving clemency is Alaska mechanic Mackenzie Spurlock, Alaska Public Media reports. His supporters argued the emissions systems can become especially troublesome in extremely cold conditions, increasing maintenance costs and, in some cases, limiting vehicle performance when faults occur. They say it’s not just anti-social drivers who want to roll coal that see the value in emissions defeat devices.
Big Bucks In Making Diesels Dirtier
Other recipients of a Trump pardon include Matthew Geouge, Ryan Lalone, Wade Lalone, Tim Clancy, Joshua Davis, Barry Pierce, Jonathan Achtemeier and Aaron Rudolf, whose Rudy Performance Parts was fined $10 million in 2024. Court records previously showed some businesses generated massive amounts of cash by selling tuning equipment that bypassed emissions controls.
The pardons also reflect a wider policy change. Earlier this year, the Trump administration said it would stop pursuing criminal prosecutions involving manufacturers, distributors, and users of diesel defeat devices, although civil enforcement remains possible.
Not everyone welcomes the softer approach. Supporters of existing emissions rules argue the equipment dramatically reduces harmful pollutants linked to serious health problems and say weakening enforcement risks reversing decades of air quality improvements.
Whether you see those pardoned as mechanics caught in a nightmare of excessive regulation or businesses profiting from breaking environmental rules probably depends on where you already stand. Trump has made his position unmistakably clear, and these nine pardons show that diesel tuning has become as political as it is mechanical and ecological.
