My C280'S moonroof has been rattoleing away as well on bumpy roads....
I would also be interested in what might be a fix for this. We've had the car from new, and alot of rattles have developed... the first was the rear hat shelf brake light.... thuds with the bass of the speakers..
Deuce-
I see youve owned a W124, which are no doubt much more solidly built than the W210, or W202 like mine. I have a W123, and at 20 yeas of age and nearly the same mileage as my C280, there are NO rattles... im willing to bet that your w124 didnt have mysterious rattles develop either. Just goes to show MB's downfall in quality with the newer models
I will say the fit and finish is still better than most cars, but these "newer" MB's just arent like the old ones...