This is a great car to own. Admittedly, it's not too fast, but it gets the job done. It has good low RPM power and unbelievable fuel economy. My best has been 50.64 MPG so far, that was with 85% highway driving. Be sure to set the cruise control fairly conservatively for best results and constantly monitor your tire pressure.
The diesel engine is GREAT! Get the TDI.
More rear seat passenger room would be nice. Also, the rear visibility is not great unless the rear seat headrests are removed and stored. Also, the optional MP3 player should be more convenient to mount behind the driver side access panel in the cargo area.