gavinhuang

I recently found my 2018 C300 has a very weird sound after I come to a full stop at the red light. The problem happens when I stop at the red light and of course still in D mode, the extra engine noise will come on but will be gone if I quickly shifted to other gear say P or I started to give some gas and drive off. Normally it is very quiet sound but this extra noise engine sound happens more and more often now. Here this (You may want to turn your volume up a bit):
Now to compare this is the normal sound:
Any idea or comment will be much appreciated! 👍