Could be any dry joint or bush I imagine. You probably need to get it safely jacked up and have an inspection with a torch, look for any torn boots or joints with play in them. Check the condition of the top mounts too.I noticed my W213 with my radio off and going over speed bumps (only certain ones) I can hear from the front passenger side I can hear a very faint creak.
Could this be anti roll bar bushes?
There are 2 lower ball joints in the front suspension. one is replaceable the other needs a new torque thrust control arm. neither part is majorly expensive. Also an upper ball joint which I think is more prone to knock than squeek
I can't say it's a good idea really, it was literally 22 years ago on my mk1 Mondeo!!Thanks
So likely to not be an ARB bush then? I shall try some silicone oil first to see.
As the car has only covered 61,000 miles and 3 years old, I wouldn’t of though it would need replacing, as it’s done mostly motorway miles.