How to unisntall the '06 A-3 bulbs ?
 

How can I take out the HID D1S Gas discharge bulbs (low beam) of an 2006 A3 2.0T ???

ldv ---

in the engine bay, you should see a cover in the back of the headlight housings. there's just a clip you need to undo, and you'll have access to the bulbs.