I have had my Jetta for a little over four years now, and have been fairly satisfied with the car. The 2.0 engine is pretty weak and goes through more gas than I expected. I believe VW has made a huge improvement in both of these areas in recent years. The car handles pretty well, but it doesn't take long various rattles and noises to present themselves after use on rough Midwest roads.
Sound system (Monsoon upgrade), style, value.
Quality of interior plastics, coolant flange (failed 4 times), ground clearance (a couple of lost underbody pieces), and a few other minor details. Overall, a pretty good car, nothing major.