I've got a passenger side rattle that only occurs if NO ONE is sitting in the passenger side. I'm thinking it may be seat-belt related (maybe the belt is hitting the plastic?).

I tried to sit on the passenger side while my wife drove, and un-did the seatbelt temporarily...still no sound. It seems to come from the door panel, but I'm not sure why having a passenger there would change it.

As for the rest of the car - pretty quiet considering how stiff the suspension is! I have the typical hatch rattle that I will get remedied at the dealer. Otherwise, it's good.

SQ