Old audi 100/early A6 diesel estate. Even more reliable, add in fuel economy not much worse than a modern supermini, modern, spacious, comfortable interior. Cannot rust as the body is galvanised. Simple, robust engineering (basically just a big VW golf). Unless you want sportscar handling, I can't see a downside of these cars. It even has a fairly classy image for such an old car and 4WD is an option should you need it without an entirely pointless and stupid SUV attached to it. If something expensive breaks, so what, throw it away and get another, your guaranteed not to lose as much as a fairly crappy new car would anyway.
I've owned several Audi 100s including one that cost £800 and ran for nearly 6 years for the cost of a £12 wheel bearing. I was almost praying for it to fail the MOT in the end just so I had a reason to replace it. But no, give or take the odd lightbulb... I finally sold it for £500 when I left the country.
It's one of only two cars I've owned, I wish I still had. (the other was a Rover P6 3500, which is an amazing drive for a now 45 year old design - and I've owned a fair few BMWs, Mercedes, Audis etc.).