Medium- and Heavy-Duty Zero Emission Vehicle (ZEV) Requirement

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Washington has adopted the California Advanced Clean Trucks requirements specified in Title 13 of the California Code of Regulations, requiring manufacturers to meet California’s ZEV production and sales requirements. Beginning with model year 2025, manufacturers will be required to sell zero-emission trucks as an increasing percentage of their annual sales for Class 2b through Class 8 vehicles in Washington. ZEVs include all-electric and fuel cell electric vehicles. For more information, see the Washington Clean Car Standards website. (Reference Washington Administrative Code 173-423 and 173-400-025)