Come on then sparky Paul, what did you keep so long? 15 yrs is a long time.
A late mark 1 Ford Galaxy 2.3 petrol. It was a superb family vehicle, almost a family friend - the kids christened it "Bluey". It's carried us and the dog all over the UK, from Orkney to Cornwall. 22,000 miles when I bought it, I put another 140,000 on it.
In 15 years, it broke down once a few miles from home, a faulty relay which was a known problem - dry joint resoldered, so cost free. Aircon failed three times, poor pipework routed where it would corrode, gave up in the end - replacing the aircon pipes was a nightmare, they built the car around them. Everything else was just wearing parts, and it only ever went to the garage for the MOT and regassing.
It finally succumbed to rust, I had already welded the front outriggers and repaired the bottoms of the front wings... but it still looked pretty good. However, a hole in the inner sill just got bigger and bigger once I started poking, so I thought, what with the running costs and its other problems, it's time had come.
It was a great bus, but absolute best 35mpg on a steady 50-60mph run, around 30mpg on motorways and just below that knocking about. Not bad when petrol was 80-90p/litre, but when fuel prices went up, it ended doing less miles as a second car.