Mine was reasonably quiet for the first seven months after I bought it new then it developed road noise loud enough to make conversation in the car difficult and wind noise from the windows at anything above 60 mph.

The best clue I have as to the cause is that one fall day it had snow on the roof when I left for work in the morning but it got quite warm that day, melting the snow. Then it got cold and when I opened the door there was a frozen rivulet of water from the top of the door to the bottom on the body on the surface where the door latch hook is. The rivulet was unbroken where it crossed the area where the rubber seal between the door and the body is indicating that the door was far enough away from the body that the seal was not sealing. In other words, the door was not closing all the way.

In addition to that, if I have my arm against the door when I hit a bump I can feel the door moving in relation to the body.

Several trips to the dealer and one to another dealer and trips to two dealers who wouldn't work on the car didn't solve the problem. The last time I took it to the dealer they added a rubber overlay to the gasket around the top of the window which made the problems worse.

Possible causes:

The service technicians can't adjust the door latch properly (they've had more than six chances).

The door latch screws are stripped.

The welds that hold the body and frame together are separating (at the same time that the door problems started the car started to dart to the right whenever the right front wheel lost traction on a snow patch or wet manhole cover or pothole).

Good luck.