Advanced Clean Cars II: The next phase of California’s Zero-Emission Vehicle and Low-Emission Vehicle regulations

Based on the EJ threshold, the maximum allowance can be 15% of the manufacturer’s annual ZEV requirement in each model year, or a larger amount of the calculated cumulative allowance across the 5 years can be used to offset the requirement in a year while the remainders are spread over the subsequent years. [...] If the manufacturer’s EJ values reach 0.5% of its annual ZEV value requirement (EJ threshold) in one of the MYs 2026–2028, the first three model years can use the converted values up to the maximum cumulative allowance; if two of the MYs 2026–2028 reach the EJ threshold, the first 4 model years can use the maximum allowance; if all three satisfy the threshold, all 5 years can use the maximum allow. [...] SVMs can certify 100% of its MDV fleet to the ULEV250 or ULEV400 for MYs 2026 and 2027, and to the SULEV170 or SULEV230 for MYs 2028+, in lieu of the fleet average requirements shown in the figure for higher volume manufacturers. [...] LEV IV removes the SFTP composite option to better control emissions for the majority of the vehicle emission categories, excluding the ULEV250 and ULEV200 in class 2b and ULEV400 and ULEV270 in class 3 that are only available in MYs 2026–2028 (noted under Table 6 and Table 7) and can still adhere to LEV III standards. [...] The amount of failed vehicles are determined as the quotient of the total amount of g/mile NMOG+NOx emission debits and the g/mile fleet average required for the model year the debits were first incurred for LDVs in both LEV regulations and MDVs in LEV IV.