This will depend on which state you live in. For the purposes of this discussion, "Car Reg Fees" is the same as Personal Property Taxes, if you qualify.
First, if your state's fees qualify; then where to deduct it. Please feel free to post any additional details or questions in the comment section.
https://ttlc.intuit.com/replies/6145391
You’ll find this deduction listed under Cars and Other Things You Own in the Deductions & Credits section of your federal tax return. To skip the car registration fees section and go directly to other personal property taxes you paid, type “personal property tax” in the Search box and select the “Jump to” link.
To qualify for this deduction, the personal property tax you paid must have been:
· Charged on personal property you own
· Based only on the value of the personal property
· Charged on an annual basis (regardless of how often it’s collected)
If you paid a tax on your car in one of the few states where car registration fees aren't deductible, you can claim it as personal property tax, if it meets the above qualifications.
