ive done 45k miles in my 2001 jtd in the last 20 months, so i'm in quite a good position to help. 1) oil changes supposed to be every 12k, i do mine at 8k. 2) cambelt at 77k, I had mine done at 50k 3) it's been pretty reliable, check wiper linkage out, as the original bushes are crap (all punto's not just JTD), the linkage can drop apart, uprated ones are available (see elsewhere on the forum) Clutch can be a little weak, though if it's not been chipped/remapped, it should be fine. Generally a tough little car, trim is cheap inside compared to previous cars, but is reasonably solid and rattle free. I have a 30 mile drive to work, and if you use the trip computer and drive sensibly, you can get 65mpg at mway speeds. the jtd is nicer to drive than the petrol ones (from the courtesy cars ive had) , the petrol ones are a little quieter, but the jtd has far more torque. They are awkward to change you own oil on, having a plastic undertray though, I'm lucky in being able to use a freinds ramp when it is oil change time. My local main dealer's workshop know what they are doing, but are silly money,so i do what I can myself. There is also a LOT of hidden performance in the JTD engine............... Hope this helps