I too have had the problem for some time. I resorted to professional help to remove the underlayment material from beneath the cabin interior (Seats, center, etc) which set me back several hundred. It made a slight difference, but the best results came from reading this post and removing as much of the lower underlayment piece as possible beneath the dash board. The upper piece is left for whenever I have time and more money to do a complete removal.
The difference is noticable after a few hours when you first open the door. However, I will give it a few days before calling victory.
The hard part was removing the underlayment material beneath an electrical bracket (white). I would say I was able to remove about 99% of the lower piece. Fortunately, I had the star-shaped tool from a hobby kit to remove the screws.
None of my local dealers wanted to do the job for fear that the smell may not be completely removed. Even if I were under warranty they would do it, but not guarentee the smell removal.
I wish VW would ackowledge that they have a serious issue with the selection of this material for use in the warmer climates. Anyone have a lawyer friend, or who is a lawyer that we can get a class-action suit together to recoup our costs?
Several times I have spoken with VW of American and all they would do for me is offer me a $1K loyalty coupon for a new car! How rediculous, why couldn't they just use the $1K to remove the material. I was quoted less than $1K from the dealer who didn't want to do the work!
Could we trace it down via the VIN number for the problem cars? My neighbor just informed me that she had a company ship her Passat to Texas and on delivery from the boxed shipping container, the car smelled. I showed her a piece I removed to today and she said it was the exact same smell. She had sold it immediately after moving here due to the smell!
Any one have any luck dealing with VW?
I sincerely hope that the new Passat doesn't have the same material!
I'll try to post pics.