The noise in mine was reduced significantly after i replaced the tyres wth some decent rubber. As for rattles from boot areas-OMG , i had one for months and could not suss it out. It drove me crazy and so one day i made my son sit in the boot and find it. Turned out to be the plastic trim covering the insde of the boot lid. Replaced all the plastic fasteners to no effect and eventually sealed around the edge with silicone-JOB DONE!!!!