VMA-
When we took delivery of our 2006 HAH a month ago, we were told to run it carefully on a "break-in" period for the first 600 miles. Did you get the same talk? Our mileage increased noticably after that time.

We have also had a vibration/rattle problem somewhere between 35-40 mph, does not seem to correspond to the IMA. The dealer took a shot at it and claimed that the moonroof needed lubrication. After a week it seems to be returning. We also have a 2006 V6 with moonroof and have never had a problem with it. Have you experienced any noises from your moonroof?