Sponsors (8)
The bill trades near-term regulatory certainty and permitted repair/maintenance safe-harbors for vehicle and equipment owners for a moratorium on stronger emission standards for up to a decade, providing economic stability now while delaying environmental, public-health, and technological benefits.
Vehicle owners, fleet operators, manufacturers, and small businesses gain 10 years of regulatory certainty because EPA is barred from imposing standards stricter than the 2007/2010 levels, reducing compliance uncertainty and near-term costs.
Small businesses, vehicle owners, transportation workers, and manufacturers can perform software updates, repairs, diagnostics, and monitoring consistent with specified EPA guidance without triggering penalties, enabling maintenance and operational flexibility.
The general public and local communities are protected because EPA retains authority to enforce against defeat devices, tampering, or permanent disabling of emission controls, preserving emissions integrity and enabling fraud enforcement.
People living near roadways and the general public will likely face higher pollution exposure for up to 10 years because the bill prevents EPA from strengthening vehicle and engine emission standards above 2007/2010 levels.
All Americans lose potential climate and air-quality improvements for up to a decade because tighter emissions and cleaner-engine standards are delayed, slowing reductions in greenhouse gases and harmful pollutants.
Small businesses and transportation operators may be locked into specific repair and monitoring approaches because the safe-harbor is tied to particular EPA guidance, reducing regulatory flexibility to adopt newer or better technologies.
Based on analysis of 3 sections of legislative text.
Creates 10-year safe harbors that limit EPA from issuing regulations stricter than specified 2007/2010 and Tier 4 diesel standards when certain guidance-based practices are followed, and sets rules for later successor standards.
Official title: To amend the Clean Air Act to preserve regulatory stability for motor vehicles, motor vehicle engines, nonroad vehicles, and nonroad engines, and for other purposes.
Introduced July 9, 2026 by Julie Fedorchak · Last progress July 9, 2026
Creates two parallel 10-year guidance-based safe harbors that limit EPA authority to adopt rules more stringent than specified past standards for on-road diesel engines (2007/2010 standards) and Tier 4 nonroad engines, when manufacturers, operators, and repairers implement certain inducement, DEF quality monitoring, repair, and monitoring practices consistent with named EPA guidance documents and certification/useful-life rules. After each 10-year period, any successor standard must meet multi-year implementation timing and consider specified economic, operational, harmonization, and durability factors before taking effect.