EXACTLY What I have, headrest and definitely not the headrest making the noise but the rooftop... wow so afterall other owners have experienced this? Turbokuo yes it's quite annoying. I thought it was the seatbelt and was holding onto it while driving but it still creaked. Tried pushing the chair further up, didn't help. Opened and closed the top and tried to work on it, didn't work. I guess it is always the case for a softtop or hardtop convertible? (well my previous SLK 350 retractable hardtop also had similar problems). It is pretty annoying but if I had recalled correctly, the creaks weren't there for the past 9 weeks so I guess something loosened up after driving around in those nasty road conditions in HK. Guess I will have to live with it and crank up the music? Turbokuo, did you bring it in to have it checked out?