Had a rattle when going over speed bumps which sounded like a heat shield. Took the car to a tyre and exhaust place near me and they lifted her and a tiny (between A5 - A4 paper size) heat shield had become loose and was resting on top of the exhaust. The tech got their pliers and bent/ripped it out before inspection if it can reattached
. This heat shield protected the joint in the prop shaft. I don't think this will be a problem but I will have drop part, if not all, the exhaust to add a new shield.