2012 C Coupe rattle underneath

[Red111]

Whenever I drive slowly (up to 30 say) with window open over say block paving, bumpy roads, or a recessed drain etc I can hear what sounds like a metal/tinny rattle sound. Been to Mercedes, they did something with handbrake guard or something and it stopped....for about two weeks! As that was second time I had wasted a Saturday morning I thought bugger it I'll live it it.

Anyway for once I was a passenger in my car last night and had the window down and it sounded just as bad on that side.

Anyone else had experience of this?

[sjf2020]

Had similar issue last year on my e class coupe, dealer replaced a bolt that holds the handbrake guard (something along those lines). No rattles since

[dhalv]

I have the same issue on my C Coupe - I will certainly ask about the Handbrake guard - previously they said all was ok, but the rattle has and was always still there!