Sorry here is a link to hear the exhaust https://youtu.be/I9unJHqqexM
This is on cold start and sounds a little normal here but the grows fade away..
Also when driving along can barely hear the exhaust almost sounds like something is blocked.
First post here and sadly it's an issue with my C63 :(
Only been a month since I bought the car and all of a sudden the exhaust growl isn't the same, just sounds like not like a c63 and hint of power loss too! Had an indie look at it and an Xentry diagnostic but came back with zero...