My 17 year old Discovery clicked over 205,000 miles.
I paid under £2k for it a couple of years ago. It came with a new rear chassis and crossmember. I’ve self serviced it, nothing beyond a competent diyer. Injector seals and loom, fuel pressure regulator, fluids and filters.
The acrive ride suspension pipes rusted through. I replaced the system with standard anti roll bars and removed the pump and replaced it with a standard pulley. I just left the redundant plumbing in place. The only other failure was a front prop shaft universal joint, I simply fitted a £70 complete used prop shaft.
You can apparently get a replacement galvanised chassis for them for about £2k. That is their Achilles heel. I’m thinking of doing a chassis swap when mine dies. I doubt you’d find a £5k Discovery these days, I’d only be spending that much on one with a galvanised replacement chassis.
I use mine almost exclusively for towing my log trailer and for jaunts to the quarry for pothole filling material. It’s a really competent vehicle for those sorts of chores with a little more comfort than a Defender