Our Jetta TDI now has 28,000 miles on it. The only problems so far have been window regulators. I've put 2 in the right front door, and 1 in the left front door. The bad news is the car's basic warranty is (was - they've upped the warranty) 2 years/24,000 miles, so I was out of warranty. The good news is, when I complemented the dealership's general manager on the service, he said "if you ever have any problems, come see me, and I'll help you out. ". Other than that, the car is great - over 45 mpg average with an auto!