Hello guys, I have 2011 mazda 3 sedan. 2.0. 85km on it, Ive been experiencing this noise coming from my rear passenger whenever i am accelerating at any speed. i cant describe the sound but seems like a plastic that got stuck or something. checked my rear seats and trunk might something be stuck on it like plastics, or any material but did not found anything.It doesn't affect anything in terms of handling and performance of my vehicle yet but its really annoying. Sound goes on and off. any1 have experience thesame issue as mine? let me knw thanks