Labor/Employment,
Environmental & Energy
Aug. 28, 2025
Trucks in limbo: California's ZEV rules under legal challenge
Four big truck makers are suing California over its zero-emission rules, saying they're stuck between state mandates and federal rollbacks. The case could reshape how far states can go on climate policy and whether side deals like California's Clean Truck Partnership hold up in court.





Julie A. Cress
Partner
Baker Botts LLP
Phone: (415) 291-6242
Email: julie.cress@bakerbotts.com
Julie A. Cress is a partner at Baker Botts LLP.

Sterling Marchand
Partner
Baker Botts LLP
Department Chair of Litigation
Phone: (202) 508-9313

On Aug. 11, four major truck Original Equipment Manufacturers (OEMs) -- Daimler Truck North America LLC, International Motors LLC, Paccar Inc., and Volvo Group North America LLC -- sued the California Air Resources Board (CARB), its Executive Officer Steven Cliff, and Gov. Gavin Newsom, challenging California's authority to enforce mobile source regulations promoting a transition to zero emission vehicles...
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