H.R. 8079 — Diesel Truck Liberation Act of 2026

This section prohibits federal requirements for manufacturers, importers, or distributors of motor vehicles or motor vehicle engines to install, certify, or maintain emissions control devices or onboard diagnostic systems, notwithstanding title II of the Clean Air Act (which regulates emissions from mobile sources such as cars and trucks). It further (1) bars the Environmental Protection Agency from promulgating or enforcing any such requirements; (2) eliminates civil or criminal liability under federal law for manufacturing, selling, importing, purchasing, using, or modifying noncompliant vehicles or engines; (3) repeals all related regulations under the Clean Air Act or other federal laws; and (4) vacates any criminal imprisonment penalties and expunges records for prior related liability. (Thus, vehicles need not meet federal emissions standards.)