The Diesel Truck Liberation Act of 2026 would prohibit the federal government from enforcing laws requiring vehicle manufacturers to install or maintain emissions control devices and diagnostic systems on motor vehicles and engines. The bill would prevent the Environmental Protection Agency from creating or enforcing any regulations related to these emissions controls under the Clean Air Act, and it would shield manufacturers, sellers, and owners from civil or criminal penalties for selling or using vehicles without such equipment. The legislation would also nullify existing EPA emissions regulations and vacate any prior criminal convictions or fines related to removing or disabling emissions controls. This bill would fundamentally eliminate federal oversight of vehicle emissions standards, affecting manufacturers, truck owners, and air quality regulations across the country, with no specified funding requirements or implementation timeline.
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