Tocfin

I have a 2013 W204 1.6 7G-Tronic transmission. I've noticed that when I go to drive, I hear a faint bang when the speed exceeds 20 km / h. The sound only sounds once per drive, it doesn’t repeat until I turn engine off and restart the car and start driving. There is no problem with the transmission, the gears change well and the car was just in A-service at the brand service where it was said that everything was ok. Sometimes I hear a small squeak from the left front as I drive over the road bumbs. Is there any idea where the sound could come from?

alecmascot

Is it the doors locking ?

Tocfin

I dont think so, doors are locked before that sound.
I tried to take a video, you can hear the thud in this video, 3 seconds before end.

https://imgur.com/BCn8XHO

Tocfin

https://mbworld.org/forums/c-class-w...ank-sound.html

i found this old thread, basically same problem. Is this something I should worry?