There is an annoying rattle from the boot area when the bass is kicking in. Not sure if this is from the spoiler itself or the mechanism for the boot. Has anyone else experienced this problem, and whats the best way to cure it?
I have a MY01 UK300.

 

Check the bumper, number plate and number plate lighting. Unfortunately, it's most likely the spoiler, which is a sod and there's not much you can do about it. People have tried filling them with foam before now which helped a little?

 

Yeah, sound proofing under the spoiler doesn't look easy. May try and get some foam then and fill up the gaps.