Automakers urge court not to reinstate Biden climate standards

By Alex Guillén | 06/29/2026 03:49 PM EDT

Manufacturers warn they would have to take “drastic actions” to comply, including restricting sales of internal combustion vehicles.

Unsold 2026 Ioniq 5 electric cars sit on display at a Hyundai dealership Friday, June 26, 2026, in Highlands Ranch, Colo.

Unsold 2026 Ioniq 5 electric cars sit on display at a Hyundai dealership in Highlands Ranch, Colorado, on Friday. David Zalubowski/AP

The auto industry’s biggest trade group has told a federal court that reinstating Biden-era EPA greenhouse gas tailpipe rules would have “disastrous consequences” for the sector and consumers.

The industry pushback comes as a group of youth challengers seek to block the Trump administration’s repeal of the 2009 endangerment finding and all federal vehicle climate standards.

In a break with environmental groups and Democratic-controlled states also challenging the repeal, the youth plaintiffs are seeking to stay the rule — effectively reinstating tailpipe standards — for the duration of litigation. The youth have raised constitutional issues with EPA’s repeal, while the other challengers are focused on statutory objections.

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In a friend of the court brief Monday, the Alliance for Automotive Innovation complained about long-term policy uncertainty and warned the court against reviving tailpipe rules suddenly.

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