Ugh... my rattles started only a couple of hundred miles after I got the car. I think I've heard about 4 or 5 different rattles/buzzes that are mostly intermittent. The loudest and most annoying is right in front of me in the dash somewhere. It mostly occurs when driving over really rough road. It almost sound like it's the hard plastic pieces around the time/temp display, but I think it's coming from inside the dash. All the of the outer trim seems solid and tight.
Have heard other rattles/buzzing coming from what seems like the driver's side tweeter cover, passenger's side door, glove box and somewhere just behind my left ear... maybe the b-pillar trim? Oh, and once in a while I hear something from the rear hatch, but that might just be my plate rattling.