Hi, i've got a question about a rattle/buzz sound in the rear of my mums yaris hatch. What happens is when you shut a door there is a rattle in the rear left around the wheel arch. At first i thought it was that lid over the suspension as they are quite loose, so i took it off and it wasn't that. So would it be the whole panel of plastic vibrating or somthing behind? i have noticed that if you tap around all the plastic panels around the rear of the yaris they are qiute buzzy. Is there anyway of quietning the whole rear up, like by putting big blocks of sponge or somthing behind all the panels? Because the yaris's are a really quiet car but i think this is where they are let down with being quite noisy in the rear. The cars only 3 months old and i dont think its good enough to have rattles in the back of it, we would have bought a hyundai if we wanted that