Supreme Court Deals Crushing Blow To California’s EV Mandate
The Supreme Court of the United States delivered a significant ruling that reins in California’s aggressive climate agenda, siding with energy producers and affirming their right to challenge sweeping green regulations in federal court.
In a 7–2 decision, the justices cleared the way for a lawsuit against the U.S. Environmental Protection Agency over its approval of California’s stringent emissions mandates—policies that critics argue amount to government overreach into the nation’s energy and automotive sectors.
Writing for the majority, Justice Brett Kavanaugh emphasized that businesses cannot be shut out of the legal process when facing burdensome federal regulations.
“The government generally may not target a business or industry through stringent and allegedly unlawful regulation, and then evade the resulting lawsuits by claiming that the targets of its regulation should be locked out of court as unaffected bystanders,” Kavanaugh wrote. “In light of this Court’s precedents and the evidence before the Court of Appeals, the fuel producers established Article III standing to challenge EPA’s approval of the California regulations.”
At issue are California’s long-standing efforts—championed by Gov. Gavin Newsom—to force a rapid transition to electric vehicles, including a mandate that EVs dominate new car sales by 2035 as part of the state’s broader push toward so-called “carbon neutrality.”
Kavanaugh also pointed to shifting legal interpretations from the EPA itself, raising further doubts about the agency’s position.
“EPA has repeatedly altered its legal position on whether the Clean Air Act authorizes California regulations targeting greenhouse gas emissions from new motor vehicles,” he noted.
The ruling comes amid a broader rollback of climate regulations under President Donald J. Trump, who recently signed multiple resolutions dismantling key elements of California’s green energy framework. The move dealt a political blow to Newsom, widely viewed as a potential 2028 presidential contender, and marked a renewed push for energy independence and regulatory restraint.
“This case involves California’s 2012 request for EPA approval of new California regulations,” Kavanaugh explained. “As relevant here, those regulations generally require automakers (i) to limit average greenhouse gas emissions across their fleets of new motor vehicles sold in the State and (ii) to manufacture a certain percentage of electric vehicles as part of their vehicle fleets.”
Meanwhile, EPA Administrator Lee Zeldin signaled that even more sweeping changes may be on the horizon, describing upcoming action from the Trump administration as potentially “the largest act of deregulation in the history of the United States.”
Central to that effort is the possible repeal of the 2009 “Endangerment Finding,” a controversial determination made during the Obama era that classified greenhouse gases as a threat to public health—unlocking broad regulatory authority under the Clean Air Act.
Originally enacted decades before climate change became a central policy issue, the Clean Air Act was designed to regulate traditional pollutants like industrial smoke and vehicle exhaust—not ubiquitous emissions such as carbon dioxide.
Critics have long argued that using the law to regulate greenhouse gases stretches its intent beyond recognition, opening the door to sweeping mandates that affect nearly every sector of the economy.
The Endangerment Finding has had far-reaching consequences, particularly in the auto industry. Under the Biden administration, it served as the legal foundation for rules aimed at dramatically increasing electric vehicle adoption by 2032—policies that opponents say impose heavy costs on consumers and businesses alike.
Supporters claimed such measures would ultimately save money by reducing fuel costs. But critics questioned why government intervention was necessary to enforce what should be a market-driven transition.
Many Americans—especially working families and truckers—have voiced concern over the high upfront cost of electric vehicles, arguing that mandates disproportionately burden those least able to afford them.
The Trump administration now contends that rolling back these regulations could save consumers thousands, with estimates suggesting up to $2,500 per vehicle.
Taken together, the Supreme Court’s ruling and the administration’s deregulatory push represent a major shift away from top-down climate mandates and toward a framework rooted in market choice, constitutional limits, and energy affordability.