Hi, I wouldn’t say I have noticed any more outside noise in this car that any other I have been in, the windows seem to fit quite tightly. As for the gaps, I have attached two photos, they don’t show it very well but the window drops around 5mm when the doors are opened and go back up again when the doors are closed, there is a slot in the rubber which the window goes into so you cant get a credit card in there, the other photo shows the side of the window, there is no slot in the rubber, it is quite think rubber and a bit squidgy and the window just seals up against it, its quite a tight fit but with force you can get a credit card through. I have jet washed the car a few time and have not noticed any water getting into the car. Perhaps in a few years time when the rubber starts to wear the story may be different, although it would just mean replacing the door and side rubbers. I hope this helps,