I have been using a car for rental property and now want to start renting the car on Turo. What depreciation value do I use for Turo?

 I have used this car for personal and real property rental business for 4 years. I converted the car to a Turo rental. What valuation do I use for depreciation if I began to use this for the Turo ride sharing platform?  Turbo tax does not address this in the the software.