Hi i have a 2006 astra 1.7 cdti 5 door and when i travel at over 50mph i can hear wind coming through the window as if the window is open. It seems to be coming from the very top corner of the window. I have also found water sitting under the door when i open it after heavy rain. i went into the vauxhal dealership and they wernt very helpful.
if anyone can suggest whats wrong and how i could sort it i would be greatfull