Biden Is Set to Propose Toughest-Ever Rules on Car Pollution to Spur EVs

The Biden administration is on track to propose the toughest-ever US curbs on car pollution, while stopping short of an electric-vehicle mandate or ban on gas-powered models.

The proposed standards on cars and light trucks, set to be announced Wednesday in Detroit, are expected to govern tailpipe emissions of carbon dioxide, smog-forming nitrogen oxide and other pollution from vehicles manufactured for model years 2027 through 2032. The plan was described by people briefed on elements of the proposal who asked not to be named because it isn’t yet public.

Major US automakers have pleaded for requirements extending just a few years, while EV manufacturers such as Tesla Inc. insist the administration should take advantage of new federal-government investments in charging and battery production to push for even stricter limits.