Yes...this happens to a majority of 300 owners, whether you have sunroof or not.
It normally happens within the first 3 minutes of turning the car on, and normally only when I make that first right turn out of my neighborhood.
You're right, it kinda does make you feel better that you're not the only one experiencing the problem, and because so many people are experiencing it, it must be something with the design of the car...(think how revolutionary it is) and this is the first year of this car. Maybe they'll have it ironed out by next year???
But I guess I take the good with the bad. That one second of pop for a evening of fun driving is a reasonable sacrifice
