The TDI wagon has been a great car - few problem, great mileage, comfortable, and it can carry all of the things you need. I installed a tow hitch on mine to drag a GTX 4TEC Sea Doo and it has no problems getting it out of the water. We do get some funny looks as the PWC is almost as big as the car. Our golden retriever has not offered any complaints about riding in it. It performs well for a diesel - no sluggishness from this car. You step on the gas and go!
Incredible mileage - I average 41 in the city and 45 on the highway. This drops to about 33-35 during the summer using the A/C. Still, you can't beat it. Multifuntional - as I use for a commuter car, our family car, and our fun car.
A little more leg room for the back seats - maybe move them a few inches to the rear? The AM radio reception is truly terrible. The dealer blames it on the installation - long wire runs throughout the vehicle body, but who knows.