Diesel Truck Liberation Act of 2025

Summary#

This bill would stop federal rules and enforcement that require emissions control devices or onboard diagnostic (OBD) systems on motor vehicles and engines. It says no federal law, regulation, or executive order may force a manufacturer, importer, or distributor to install, certify, or maintain those devices. The Environmental Protection Agency (EPA) would be barred from making or enforcing such requirements. The bill also removes civil and criminal liability under federal law for making, selling, importing, buying, using, or modifying vehicles or engines that lack emissions devices or OBD systems. It states that any related federal regulations would have no force, and it directs that past federal criminal penalties (including imprisonment) and civil findings for this conduct be vacated and records expunged.

What it means for you#

• Manufacturers, importers, and distributors: Federal requirements to install, certify, or maintain emissions devices or OBD systems would no longer apply under this bill.
• Vehicle owners and buyers: Under the bill, federal civil or criminal penalties would not apply for owning, buying, modifying, or using vehicles or engines without these devices.
• Enforcement agencies: The EPA would be prohibited from creating or enforcing federal rules about these devices.
• Legal records: The bill directs vacatur of federal criminal penalties and expungement of federal records tied to these specific conduct categories.
• State and local rules: No publicly available information on how this bill would affect state or local regulations.

Expenses#

No publicly available information on the bill's costs, budget effects, or savings in the provided text or metadata.

Proponents' View#

No publicly available information.

Opponents' View#

No publicly available information.