I know the official answer is when I started using the vehicle for business and as is stated here: https://ttlc.intuit.com/community/tax-credits-deductions/discussion/what-does-date-placed-in-service-mean-vehicle-expense/01/682493#M89734
However, I did not know I was using it for business or did not know I could deduct it so I never kept any records.
So again what date should I use. A random date when I may have started using it long ago, or the more recent date when I started keeping mileage and expense records as a proper business expense.
The second one makes more sense to me, but I would like know the proper way to do it. Thank you.