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Per EPA's authority under the Clean Air Act section 202(a), EPA will propose a comprehensive set of emissions standards for greenhouse gases and criteria pollutants for the light-duty vehicle sector as well as the heavy-duty vehicle Class 2B and 3 sectors. The standards will begin with model year 2027 light-duty vehicles, with stringency levels set at least through model year 2030. This action is also supported by the President's Executive Order 14037, titled "Strengthening American Leadership in Clean Cars and Trucks." EPA will coordinate with the Department of Transportation in developing this proposal as appropriate.

Statement of Need: On August 5, 2021, President Biden issued Executive Order 14307 on Strengthening American Leadership in Clean Cars and Trucks which ordered the Administrator of the Environmental Protection Agency (EPA) to "establish new multi-pollutant emissions standards, including for greenhouse gas emissions, for light- and medium-duty vehicles beginning with model year 2027 and extending through and including at least model year 2030." This rulemaking will establish standards beyond 2026.

Summary of the Legal Basis: Clean Air Act (42 U.S.C. 7401)

Alternatives: EPA will asses alternative standards in the development of the proposal.

Anticipated Costs and Benefits: EPA will assess costs and benefits in the development of the proposal.

Risks: EPA will assess risks in the development of the proposal.