[Conquistador]

There are quite a few variations of glass (IR-reflective, acoustic etc.) so just be sure you get the same type. If you do it through insurance then, again, make sure the fitter turns up with the correct Audi glass and nothing less, whether it's side glass or rear screen.

I wouldn't roll the window down in the meantime but equally wouldn't be concerned about it getting any worse through everyday driving.

There was a video somewhere on Youtube of a guy going at a D3's side glass with a sledge hammer for a couple of minutes before it was bendy and broken up enough to be peeled back with Kevlar gloves so I can't imagine a big screwdriver or even a few blows from a DIY hammer would compromise the security of the car but it's sh!t when damage is left by some little **** trying and failing.