For your 2000 Audi TT Quattro I will have LED replacement lights available for the exterior lighting of your vehicle like the Putco 1156 LED Bulb, part # P231156A360, that you have referenced. This LED bulb will fit your rear turn signal.
I am including a link to a product page that will list the available replacement LED lights for your vehicle. A load resistor kit # P230004A-2, is required when switching to LED bulbs for turn signals.
I do not have any replacement LED bulbs for the... view full answer...