I imagine this has been asked before but I cannot find the answer, I've searched but only seem to find aftermarket info.
My car has factory fitted HID's, one bulb is a bit more 'purple' than the other, I've seen this before and changed the bulbs and its solved the issue so I'm pretty sure its just a tired bulb.
Were do you get them from? I usually use TPS for everything but I cant help think that that's going to be a bit of a waste of money. Its a bulb at the end of the day Audi don't make bulbs so I'm only buying something aftermarket with a VAG badge on it probably for twice the price. Tried Andrew Page they don't do them apparently :s
Its a 2008 S3