Hi to everyone. Pat from No CA. New to forum and a new xfile owner. 2008 red hatchback. Not sure where to ask a rattle question....after driving 15 mins when I accerate I hear a rear rattle. I was convinced it was the muffler, had it checked out and all is good.

Sounds like it's under where air tire well is. Everything there in tact. When I lift off the gas pedal the rattle stops. Any thoughts??

Appreciate any help.
Pat