Well for a 15 year old car that has been around the whole of Australia it hasn't been too bad. Only a New gearbox and new radiator has been replaces since I have had it. But bad fuel has totally wrecked my lifters.
As for door handles.. "Don't and I mean don't! pull up door handles as the door closes it wrecks and puts strain on the handles".
Air conditioner had a slight leak and got that fixed, surface rust started forming in some areas. (Get it early and you won't see it for another 10 years).
Dif leaks oil from the Filler cap.. don't know why tried to fix it 20 times and no luck.
Car radio only played AM when I got it, but bahh I wanted a better one anyways.
I love this car, nice to cruise in, beautiful acceleration and gear changes and quiet all you hear is exhaust, easy to find parts, and fairly cheap to run doing a minimum of 500km in the city, The engines are have rock solid bottom ends and a cooling system even with a major leak still doesn't overheat.
The car has serious power and for a heavy huge big old car I can clock 0 - 100km/h in 10.3 seconds.
It gives a fairly comfortable ride and with a little bit of lowering of the suspension, the control and body roll is nearly eliminated.
LSD is gr8, grips on a dry road like you won't believe, but tho can be very dangerous doing power slides in the wet.
Some things can be changed though. The Diff is one, it needs a much shorter diff to have more acceleration and get EXTRACTORS!, the performance goes up by about 20k/w. Also run the carbie version on Premium Unleaded and watch that tacho and Speedo go up and up.
All up it's a great car, to do up and to have as a good tow car, look after them and they will serve you till the engine falls out. Good for towing and better than any commodore!
PS. Don't use additives in your radiator such as radiator stop leak.. It stuffs up your thermostat and clogs the heater.
XF's RULE.. Peace out.