do you have the prior year returns 2014 -2018 to check the depreciation history. for TT years it's under the asset. maybe some prior depreciation was not included. this would be especially true if you haven't been using TT since 2014.
here's a link to rev. proc. 2014-21 (pages 4 and 5) which specifies the MAXIMUM depreciation tahat can be taken each year on a vehicle plce inservice in 2014 assuming 100% business use. If you used an improper method you would need to correct it by filling for 3115 with the 2019 return. without being able to see all the prior year returns, I can not say for sure you used an improper method. if you used a proper method (and there are alternatives which allow less than the max) you would have to continue with that method or file form 3115 to change it.
https://www.irs.gov/pub/irs-drop/rp-14-21.pdf
