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Illinois and the City of Chicago joined a multi‑state legal fight this week to stop the federal rollback of fuel‑economy rules. The lawsuit targets NHTSA’s new “SAFE III” rule, which rewrites Corporate Average Fuel Economy (CAFE) standards. If you like headlines, you’ll get them. If you like more affordable cars, you might not.
What the lawsuit actually says
The coalition argues NHTSA broke the law by failing to set standards at the “maximum feasible” level required by the Energy Policy and Conservation Act. Their filings say the agency wrongly excluded electric vehicles from key calculations and used weak math to justify a lower fuel‑economy target — roughly 34.9 mpg by model year 2031 versus prior projections well north of 50 mpg. Illinois Attorney General Kwame Raoul and other state lawyers also claim the rule is arbitrary and capricious under the Administrative Procedure Act and that it will cost consumers nearly $220 billion in lost fuel savings.
Politics, theater, or real consumer protection?
Make no mistake: this is as much political theater as it is law. Attorney General Letitia James and her colleagues frame the suit as protecting consumers and the climate. But when state attorneys general rush into federal rulemaking disputes, they too often turn courts into policy stages. Suing the federal agency that tried to ease regulatory pain on auto buyers is a bold strategy — especially when families are still wrestling with high prices and shrinking budgets.
Why the administration argued for SAFE III — and why courts matter
The Department of Transportation and NHTSA, led publicly by Transportation Secretary Sean P. Duffy and NHTSA Administrator Jonathan Morrison, say SAFE III restores balance. Their pitch: standards should reflect technology, affordability and buyer behavior, not lofty mandates that drive up sticker prices. That is a defensible position. The question is legal: did NHTSA follow the law and the record? Courts will sort that out. Expect motions over standing and venue, and likely consolidation of many of these suits.
Bottom line: let the courts decide, but watch the politics
States like Illinois and cities like Chicago can make a public case — and they did. Yet citizens should watch closely whether these lawsuits serve taxpayers or politics. If SAFE III really helps keep cars affordable without wrecking safety, courts should respect the agency’s technical judgment. If the rule cut corners, courts should act. Either way, suing first and asking questions later is hardly a model for good governance.
