Currently driving a petrol, W reg, mk4 estate.
Lambda sensors on the exhaust are playing up at the moment (apparently a common issue).
Had some fun with the worlds most over complicated window winder mechanism a while back.
Electric solenoid on the boot went a while ago, wasn’t caused by the normal leaky rear wash squirter, never got round to tracing the fault, might do one day…
Anything you might need to fix or investigate has been covered by some Barry somewhere as mk4s are pretty popular with modders.
Otherwise no major issues really. Its been a good car.
Having said that next car won’t be VAG. Dare I say it you’ll probably find more space and comfort in a similar vintage mondeo estate and probably slightly cheaper parts too.