Transmission Shudder Problems of Volkswagen Routan

My sister bought a vw Routan se 2011 six months ago. Recently, we have experienced a "safety problem" with the vehicle especially when we are trying park it on a (steep downhill) between two cars in san francisco. When the transmission is put in reverse and the driver is backing up to park between the two cars on a steep downhill, the vw Routan moves forward approximately one foot prior to backing up and we feel abnormal vibrations in the transmission/engine. Plus, if you do not press any gas when the transmission is put in reverse, the car acts as if the transmission is put in neutral showing no resistance. This is a safety issue, I might hit the car in front of me so I brought it up to the attention of northern CA vw case manager as well I took it two different vw dealerships (vw oakland and vw serramonte). Both dealerships mechanics have admitted there is something wrong. However, the management of vw is claiming that it is normal since the other new 2011 vw Routan are performing the same under identical circumstances. The vw case manager stated that in the eyes of vw it is ok for the Mini van to move about one foot forward when it's backing up on a steep downhill; it is how it was desinged by the engineers. This absolutely an irresponsible way to treat your customer who bought a 2011 vehicle to have a peace of mind at least for the first couple of months of ownership. It puts the life of our citizens in danger. I have no control over the car when it's backing up on a steep downhill. There is no way I can stop it from moving forward about one foot before it starts backing up. Let's say someone was crossing the road at the same time I was backing up, who will be held responsible if he/she got hurt. As a government committee, I would like you to investigate this and take action.

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