I had a 2006 XK which had done 37000 miles when I sold it (after 7 years of trouble free motoring) a few months ago.
It was immaculate though, both inside and out, so looked pretty much like new!
I sold because in the last 2 years it had only done 1200 miles, and those were almost all just me taking it for a 10 mile run every 3 weeks or so, just to keep everything turning.
I am immuno-compromised, Covid is around to stay, so I sadly recognised that it needed to go to someone who would use it.