Just picked up my first X5 - purchased privately from the guy who bought it new 14 years ago so I'm only the second owner.. only 83k from new, garaged all it's life, and he's just retired having sold his garage business, so if this is anything other than properly maintained there's no hope!
He was proper fussy, too. It's a 3.0 diesel with a manual gearbox

I have every paper from new, other that servicing/tyres/brakes there's been very little needed, though the turbo was replaced under warranty when it was about 2 years old. Oh and a new drivers door handle.

So far, I've done about 500 miles - no rattles, knocks or creaks whatsoever, she drives absolutely like new and pulls very nicely. (very pleased, after having a dog of an A6 quattro that has been a total moneypit!) I've had two 3 series with the 3.0d in, one auto and one manual, and having had both am very pleased to find a manual X5!
Only one fault spotted so far - the spring loading on the rear wiper arm is poor, and doesn't contact the glass well even with a new blade - suspect a replacement is going to happen in short order.
Plans - I have the 5m long leads on order for the installation of the parrot bluetooth (I'm always on call so this is essential for me) - that sounds like it'll be a pain to install though. I also need to locate a switched supply for the dashcam.
I also want to get the alloys re-lacquered - they aren't scratched or scabby at all, but the lacquer is starting to disappear and needs re-doing. I quite like the 19s so they will stay.
Oh - and it has the heavy duty rubber floormats. Ugh. I will be wanting to source a nice set of quality grey carpet ones.
That's it for starters! Hi all

Ben