Standard deduction is between $6,300-$12,600. If your car registration fees plus the few other itemized deductions (mortgage interest & property taxes), aren't more than that amount - the software gives you the best option; the standard deduction.
There are a few other itemized deductions but TurboTax will ask you in a way that says, "Do you have medical expenses more than $X,YZY." because it's calculating the amount you would need to have for them to impact your deduction (so you don't waste your time).
If you aren't itemizing and would like to get back to the free version of TurboTax, follow the directions below, but don't try to enter these expenses. https://ttlc.intuit.com/replies/4248526