If I could buy a 2019 vehicle with the EXACT SAME standard and optional features as the 2006 vehicle, it would probably cost LESS!
To properly evaluate the cost of a vehicle, one must calculate ownership costs over the projected life.
Generally, even with a high level of maintnance the ownership cost per mile per year will decline over time. People get upset about spending money on repairs. That money is not a waste but rather a continued investment . The maintenance adds to the ownership cost but proper maintenance should not escalate the ownership cost to the level of a new purchase.
Operating costs are separate and although to be considered are not as important as ownership
The problem with vehicles is emotion, prestiege, appearance, covetness. If you wear a car or truck, then costs aren’t really a factor. Satisfaction for looking good becomes the issue. Hotness can be a factor even though hotness can seldom if ever be actually realized. The excess cost is pretty much unjustified based on usage.
Prudent purchase, Rigorous maintenance (on an aircraft level), longevity , all will produce the lowest ownership and operating cost over a period of say 10 years (or more).