Hi ,
I am not sure but I don't think so.
However , that is something that members of this forum can help develop , provided you can supply the data.
First , list down all the initial expenses you will incur in purchasing a new car , including the addition of a garage if you don't have one at present !
Next , list down all the recurring expenses you will incur in using and maintaining your car for the period you will retain it , say 10 years.
Lastly , list down the number of trips you will make in a year when you rent a car as well as the average fare you will pay for a trip.
If you can enter this data in an Excel workbook , and upload the workbook , members will help develop the calculations.
Narayan