Light-duty vehicles fuel economy; Quality (ICS code(s): 03.120); Test conditions and procedures in general (ICS code(s): 19.020); Passenger cars. Caravans and light trailers (ICS code(s): 43.100)

The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule III for Model Years 2022 to 2031 Passenger Cars and Light Trucks

The National Highway Traffic Safety Administration (NHTSA) is announcing a 15-day extension of the comment period for the proposed rule (notified as G/TBT/N/USA/2253) entitled The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule III for Model Years 2022 to 2031 Passenger Cars and Light Trucks, published in the 5 December 2025 issue of the Federal Register. NHTSA is also extending the comment period for the Draft Supplemental Environmental Impact Statement (Draft SEIS) that accompanies the proposed rule. The comment period was to end on 20 January 2026 (45 days after publication of the proposed rule in the Federal Register). This document extends the comment period to February 4 to allow the public additional time to comment on the proposed rule. NHTSA is denying requests for additional public hearings based on the number of testifiers that signed up to testify for NHTSA's virtual public hearing, which was announced via Federal Register notice (notified as G/TBT/N/USA/2253/Add.1) on 12 December 2025 and held on 7 January 2026.

The comment period for the proposed rule (90 FR 56438) published 5 December 2025, is extended. Comments on the proposed rule and Draft SEIS must be received by 4 February 2026. Late-filed comments may be considered so far as possible without incurring additional expense or delay.