Sorry, another thread about rattles. I just positively found out that what appears to be passenger side dash rattle to be coming from the passenger seat. I can try to shake the headrest of the seat and the rattling sound would appear. It's very faint, but it's there, since the car itself is so quiet.

Anyone got the same problem?

 

I have some play in the drivers side seat track that occasionally causes a popping sound when accelerating or braking. No rattle though.

 

I have the identical problem. I adjust the seatback position to eliminate the issue. At first, I had to take my wife to work so that the seat didn't rattle but she didn't like being locked in the car all day.

 

I've tried adjusting the seatback but that didn't seem to help at all. I will try to take the seat apart and see what's going on over the weekend. The rattling sound seems to be either metal to metal or metal to plastic...

 

Sorry if this suggestion soundz too simple ... But try looking at the seat belt buckle. Occasionally, I would have a similar rattle sound after having a passenger in the vehicle. I eventually noticed that the metal buckle on the seat belt was vibrating against the door pillar. With a slight twist/adjustment on the seat belt, the rattle was eliminated.