Is California motor vehicle license fee deductible?
On your Federal Schedule A, you may deduct the California motor vehicle license fee listed on your Vehicle Registration Billing Notice from the Department of Motor Vehicles. The other fees listed on your billing notice such as registration fee, weight fee, and air quality fee are not deductible.
California law is the same as federal law regarding the deduction allowed. Therefore, if you itemized your deductions on your federal return and claimed a deduction for the vehicle license fee, no adjustment to your California return is needed on schedule CA.
Source: https://www.ftb.ca.gov/individuals/faq/ivr/222.shtml