I have owned my jetta sportwagen TDI for 4 months and am very happy with it. Great combination of handling and fuel economy.
I have averaged 40 mpg over the 4000 miles put on the car so far. I love not having to go to the gas station!
Good performance--it hauls a$# when I hit the gas!
I don't love the exterior design, but it was a reasonable compromise to get the fuel economy and performance.