 I have had the same experience with the O2 sensors mentioned by others, however I had it replaced once and have just ignored subsequent O2 communication and it goes away. The car is a joy to drive and the AWD was solid in the 2008 snowfall. I also have a private mechanic and have avoided VW dealers due to their nightmarish, weak customer relations I hear about constantly. Overall I have been very happy with my GLX. Excellent power, handling and ride. At the time I bought the VW I had also driven an Audi A6 Quattro and opted for the VW. I will go VW again....