Weird rattle on rear left corner
Hoping to get some help from fellow mk4 owners. Recently I noticed a rattling sound on the rear left corner when going over bigger bumps or manhole covers that have sunken in a bit.
Can't hear it from inside the car but it's noticeable when the window is rolled down. Sounds like metal on metal rattle. Tried getting under the car thinking that a heatshield or something might be loose but I couldn't see anything. Didn't see any road debris that could have gotten stuck in there either.
Car drives and handles perfectly fine so it's most definitely not a suspension issue.
Wondering if someone here has had that happen and what was it?
My car is due a service soon either way so I'll ask the mechanics to check it out but it's annoying the hell out of me since the weather is nicer and I'm driving with the windows down most of the time.