I love my clarity, but because it is so quiet in electric I do notice rattles. We had them put foam tape on the a pillars where they meet the windows and that helped but there was always some elusive rattle. Finally I think I found the main rattle on accident. I was sitting in the passenger seat hearing the rattle and for some reason reached down to adjust the seat position. Rattle instantly gone! So. . . At least for us that elusive rattle was actually the seat position adjustment “knob”. We put a hair tie on it and have been months free without any rattle. Thought I would share in case someone is still driven nuts by that elusive sound such an otherwise quiet car 
