Okay, but you are missing the point of opportunity costs. If you buy buy a $100k vehicle new, versus a $50k vehicle used, both which will not need maintenance for at least 5 years.
How much money did you lose by not investing that $50k delta into an appreciating asset - real estate, crypto, stocks, etc.
It's not even close, if you are in the business of building wealth, you simply don't buy new vehicles. It doesn't matter if you have "full coverage warranty" on your vehicle for a new car, bc the likelihood of a new car vs a 3 year old car needs substantial repairs is negligible.
What is comes down to is: do you want $50k of equity to grow, or do you want it to evaporate immediately?
At the end of the day if you are trying to convince yourself that buying a new vehicle makes financial sense, then you aren't in the business of building wealth. End of story. Your 3 year old vehicle is just as likely to last 10 years as your new vehicle if you take care of it. Your "opportunity cost" is that you spent $50k of equity, which is basically doing nothing for you but losing value. Take that $50k and put it to work for you and buy a 3 year old vehicle.