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

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The California Air Resources Board’s (ARB) Advanced Clean Truck Program requires all new medium- and heavy-duty vehicles sold in California to be a ZEV by 2045. Zero-emission technologies include all-electric and fuel cell electric vehicles. Beginning in 2024, manufacturers seeking ARB certification for Class 2b through Class 8 chassis or complete vehicles with combustion engines will be required to sell zero-emission trucks as an increasing percentage of their annual California sales. Manufacturers must achieve the following annual sales percentages for medium- and heavy-duty ZEVs sold in California:

ZEV Sales Percentages
Vehicle Model Year (MY)Class 2b-3Class 4-5Class 6-8, excluding tractorsClass 7-8 Tractors
20245%9%9%5%
20257%11%11%7%
202610%13%13%10%
202715%20%20%15%
202820%30%30%20%
202925%40%40%25%
203030%50%50%30%
203135%55%55%35%
203240%60%60%40%
203345%65%65%40%
203450%70%70%40%
2035 and future years55%75%75%40%
*Excludes pickup trucks for 2024-2026 MYs

Additionally, entities with annual gross revenues greater than $50 million, fleet owners with 50 or more medium- and heavy-duty vehicles, and any California government or federal agency with one or more vehicles over 8,500 pounds must report their existing fleet operations to ensure fleets are purchasing and placing zero-emission trucks in the correct service locations.

For more information, including additional requirements and exemptions, see the ARB Advanced Clean Trucks Program website.

(Reference California Code of Regulations Title 13, Sections 1963-1963.5 and 2012-2012.2)