The test is designed to reduce air pollution.
Vehicles would have to meet certain criteria in order to qualify for the exemption, according to A.B. 550.
The vehicles must be 30 years or older, failed a smog test and have failed a "subsequent smog test after necessary repairs were made."
Fees would be paid to the Department of Motor Vehicles and deposited in the state's Air Quality Improvement Fund.
The SEMA Action Network is urging passage of the bill.
Edmunds says: The bill would add some flexibility to the state's current smog test, but environmentalists are likely to oppose it.