Passenger electric window wouldn't go up.
Air con doesn't blow out very cold air.
Headlining stained and rotten.
Elm dash and ski slope are badly faded with some cracking.
Front shock absorber bushes shot.
Bonnet piston stays didn't work.
Front nearside wheel bearing suspect.
Has a penchant for blowing bulbs, a seemingly never ending chase around the car replacing them and the causes.
Parts aren't as expensive as I first thought, 2 new shocks and new bonnet piston stays came in at under £100.
This has to be the most comfortable car I've ever been in, makes motorways effortless.
The car is deceptively quick and quiet, check your speedometer if you value your license.
Rear seats are all, but useless for putting people in.
Steering is very direct, very little wheel turn lock to lock. It's still a big car though.
Not too many of them on the road anymore so some exclusivity.
In response to the person indicating that their XJS has a tendency for blown exterior lamps, I suggest the following:
If you leave car outdoors in damp weather consistently, which I did for a number of years, it's a good idea to remove all lamps, use 220 grit sand paper and lightly etch-out (clean) existing rust, and, or, staining you might discover at both poles. Never had chronically blown lamps again in my 1989 XJS.