I took my tC in to my local dealer yesterday to get the sunroof checked out. The mechanics took tightened what they could and took it for a ride and they are claiming that air is getting under the sunroof (when its open obviously) which is causing it to rattle. They then declared it as TBS(to be solved maybe?) and my car is almost out of warranty so they made note of my mileage so when a fix is out there they will do it. Any way I found it hard to believe that they dont have a solution seeing as how just about everyone on here gets the rattle, I dunno if you all are getting the same rattle..but most likely.