I had a 2003 Jetta and never had an issue finding parts. Quite the opposite, as there were plenty of options to choose from, and I could nearly always find prices that were cheaper than fixing the same part on another vehicle. However, I did have to work on it frequently. Once it hit the 10 year mark, nearly all switches and lights in the dash quit working properly and, the windshield wipers wouldn't quite follow what the controls told them to, etc. Sometimes they would be off, I would go over a bump, then they'd do a single sweep.