One problem related to body has been reported for the 2013 Volkswagen Jetta Sportwagen. The most recently reported issues are listed below.
The sun roof drain tubes shrink and separate causing a water leak inside of the car and continuing down the "a" pillar. There are air bags located in the "a" pillar, and this water migration, will over time, have an affect on the operation of the air bags. I know of three friends with Jetta Sportwagens within this body style, mkvi, that have the same problem. Volkswagen has denied fixing this problem at their cost, they say it is out of warranty. This is going to be a safety, and liability issue, it may already be one, and it should be a recall item, fixed at their cost. To continue to use the same drain tubes, which shrink and leak after only two years is negligence. I hope that someone isn't injured by this when wet or rotten air bags are deployed.