You can leave these blank. If you claimed Actual Expenses for your Business Vehicle, TurboTax fills in Prior Depreciation for you.
If you claimed Standard Mileage, you will enter a Depreciation Equivalent on another screen. You will need your total number of Business Miles to calculate this (see screenshots).
More info:
https://ttlc.intuit.com/replies/5809830
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"