From the little information it's hard to say. A certain amount of vibration is completely normal while stopped. It's a V8 performance car after all. My C63S actually has more vibration at rest than my previous RS5. Both V8 engines. It's not something that bothers me. Same regarding the humming noise. These cars make all kinds of noises due to their high strung nature. I actually have a humming noise that was tracked down to the adaptive damper modules. It's an electronic noise and happens at low speeds over bumps as the suspension moves. I've tried to have it addressed by the dealer twice, but both times they came back with "can't reproduce". Before the warranty is up I want to go for a drive with the shop foreman and have it sorted out. I'm not sure it's actually an issue or just the nature of the beast. At the end of the day, an AMG has higher NVH than a regular MB. It's meant to be that way. They are meant to be rawer and let the driver know what's going on under the cover.

Hi, I found your posts where you explained about transmission jerking in 63S w205 and x253. I see you went deeply with this topic.
I have LCI 2019 glc63s and I have 2 issues:
- vibration on Neutral Comfort Mode - in sport+ race. It's irritating Im wondering if it's caused by active engine mounts?
- Humming around 2300-2400 rpm on every gear
Dealer says: IT's normal .....
Do you have any suggestion what it can be?
Thanks,
Adam