The U.S. Environmental Protection Agency (EPA) has granted California the authority to enforce a groundbreaking regulation banning the sale of most new gasoline- and diesel-powered cars and light trucks starting in 2035. This decision, rooted in California’s unique ability to set stricter emissions standards under the Clean Air Act, signals a pivotal shift toward zero-emission vehicles (ZEVs) in the nation’s most populous state.

California’s journey toward this ambitious goal began in 2022 when the state outlined its multi-year strategy to reduce fossil fuel vehicle sales. The plan includes a gradual phase-out, culminating in a complete ban by 2035. Automakers have had mixed reactions to the policy. While many have acknowledged California’s right to impose stricter standards and have pledged to scale down the production of fossil fuel vehicles, they have also sought more time to comply. Some automakers have lobbied for federal intervention, calling for relief from the aggressive timelines.

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“We anticipate that President Trump’s administration will attempt to revoke this waiver in 2025,” said John Bozzella, CEO of the Alliance for Automotive Innovation. His statement reflects the ongoing political tug-of-war surrounding California’s authority to enforce its own emissions standards, a power that has been repeatedly challenged in recent years.

The Roadmap To 2035: Milestones Along The Way

California’s transition will not happen overnight. Starting in 2026, the state will require that 35% of new vehicle sales be zero-emission vehicles, which include electric and hydrogen-powered models. By 2030, that percentage will rise to 68%, ultimately reaching 100% by 2035. Notably, plug-in hybrid vehicles will still be permitted to account for up to 20% of total sales, provided they have a minimum electric range of 50 miles.

Zero-emission vehicles are already making inroads in the market. In the third quarter of this year, ZEVs accounted for 26.4% of all new vehicle sales in California—a clear sign that consumer adoption is accelerating.

Political Pushback: Will History Repeat Itself?

While the Biden administration’s EPA has given California the green light to move forward with its ZEV ambitions, history suggests that the road ahead may be bumpy. During President Trump’s previous administration, California’s waiver to enforce its own emissions standards was revoked in 2019. It took the Biden administration’s EPA three years to reinstate it, following a lawsuit filed by 23 states against the federal government. If the waiver is challenged again, experts believe it could take another protracted legal battle to resolve.

Revoking the waiver would not be a simple task. The previous effort to rescind it took 18 months, underscoring the complexity and legal scrutiny involved in reversing the policy. Still, industry insiders expect renewed efforts to overturn the waiver if the political landscape shifts in 2025.

Ripple Effects Beyond California

California’s influence extends beyond its borders. Sixteen other states and the District of Columbia have adopted elements of California’s emissions standards, with many of them pledging to phase out gas-powered cars as well. This network of aligned states amplifies the impact of California’s policy, creating a ripple effect that could reshape the U.S. auto market.

With the 2035 deadline fast approaching, the stage is set for a historic transition in the automotive industry. California’s zero-emission vehicle mandate not only aims to reduce greenhouse gas emissions but also positions the state as a leader in the global race for cleaner, greener transportation.