I've got 221,000 miles on my TDI and it's running like it's got a quarter of the mileage on it. It's a great commuter and the gas mileage is what sells the car. It is a little under powered but for 45 mpg's the sacrifice is well worth it. The looks are good but not everyones cup of tea (I've upgraded a few things here and there and it is quite the little head turner). The interior is much nicer than most American or Japanese cars but it is pretty basic for a German car. The build quality is typical German excellence, rock solid. The drive is nice, great for the highway but not the most fun car to take on twisty roads.
My advice, upgrade a few things and this car will be golden forever.