Well my Reatta coupe is 30, was a low production halo car with the first production touchscreen, and has not started up yet.


Also the Merc SLK230 is 20 and is a $2k-$5k car.


Is not just age, is also supply (many XFs on Craigslist) and desirability.


Of all of my cars, only the 48 year old Judge "American muscle" is appreciating and they rarely come up for sale.