I have brand new car and I hear this. May I know what cause this and is this serious problem. Should I take my car to dealer.There's been numerous threads on problems with our cars, gotta use the search button sir! The only problem I have is the rattling from the exhaust. Fix it by sound deadening your car I believe which I may do at some point.
If you're talking about when your fan is turned "off" and there is still air coming through then that can be solved by switching from fresh air intake to the circulating setting. Having the fan turned off but still having it set on fresh air intake is like having it on "ultra low" and tuning it to the circulating setting will cut off air flow from the vents.kinda new at this but does anyone have excessive air coming from their A/C vents...when im driving like 50 Mph it really gets noticeable...