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EPA/OAR RIN: 2060-AV49 Publication ID: Fall 2023 
Title: Multi-Pollutant Emissions Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicles 

On April 12, 2023, EPA announced a proposal for new multipollutant emissions standards to further reduce harmful air pollutant emissions from light-duty passenger cars and light trucks and Class 2b and 3 vehicles (‘‘medium-duty vehicles’’ or MDVs) under its authority in section 202(a) of the Clean Air Act (CAA), 42 U.S.C. 7521(a), starting with model year 2027. The proposal builds upon EPA’s final standards for federal greenhouse gas emissions standards for passenger cars and light trucks for model years 2023 through 2026. The proposed standards would result in significant reductions in emissions of criteria pollutants, GHGs, and air toxics, resulting in significant benefits for public health and welfare. EPA also estimates that the proposal would result in reduced vehicle operating costs for consumers. The proposed standards would be phased in over model years 2027 through 2032. EPA conducted outreach with a wide range of interested stakeholders to gather input which was considered in developing the proposal, and will continue to engage with the public and all interested stakeholders as part of our regulatory development process as we develop the final rule.

Agency: Environmental Protection Agency(EPA)  Priority: Section 3(f)(1) Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: Yes  Unfunded Mandates: No 
CFR Citation: 40 CFR 86    40 CFR 600   
Legal Authority: 42 U.S.C. 7401 to 7671q   
Legal Deadline:  None

Statement of Need: This action is consistent with President Biden’s Executive Order, “Strengthening American Leadership in Clean Cars and Trucks.”

Summary of the Legal Basis: CAA section 202(a)

Alternatives: EPA requested comment to address alternative options in the proposed rule.

Anticipated Costs and Benefits: EPA analyzed costs and benefits in the proposed rule.

Risks: EPA evaluated the risks of this rulemaking in the proposed rule.

Action Date FR Cite
NPRM  05/05/2023  88 FR 29184   
NPRM Comment Period End  07/05/2023 
Final Rule  03/00/2024 
Additional Information: .
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Federal 
Federalism: No 
Included in the Regulatory Plan: Yes 
Sectors Affected: 335312 Motor and Generator Manufacturing; 336111 Automobile Manufacturing; 336112 Light Truck and Utility Vehicle Manufacturing; 423110 Automobile and Other Motor Vehicle Merchant Wholesalers; 81111 Automotive Mechanical and Electrical Repair and Maintenance; 811112 Automotive Exhaust System Repair; 811198 All Other Automotive Repair and Maintenance 
RIN Data Printed in the FR: No 
Agency Contact:
Elizabeth Miller
Environmental Protection Agency
Office of Air and Radiation
2565 Plymouth Road,
Ann Arbor, MI 48105
Phone:734 214-4703

Jessica Mroz
Environmental Protection Agency
Office of Air and Radiation
1200 Pennsylvania Avenue NW,
Washington, DC 20460
Phone:202 564-1094