I have a car.
I would like to sell this car and purchase a different used car. Let's assume I am in no rush at to make the purchase+sale (purchase of my next vehicle, and sale of my current vehicle).
The question: Is there a statistically optimal year to sell a used car? 5 years? 10? 20?
For example, I imagine there is some average age of a car where some expensive parts start to wear-out and require service / replacement. If so, it would obviously be more optimal to sell the car before this happens.
I realize this is a broad and generic question. Please tell me if this is too broad for this site.
Edit: To address the ambiguity pointed out in multiple responses: I am simply interested in a statistical average over all used vehicles. If (after taking into account all makes and models) the disparity of this statistic for each of the different makes and models is so large that the final average answer is useless, then that conclusion itself answers my question.