what are common things that go wrong with 1982 audi 4000
You want it in alphabetical order? Yeah, that is sarcasm but as a former Audi owner it's so many little things...it is a very, very well engineered car but little annoying things like window switches, (lots of switched for that matter) seat adjustments, minor things that don't prevent you from driving car but are expensive, for example I had to pay $340 for a tail light lens. Just the red lens not the tail light assembly
PS I had a 1980 Quattro
Find out more about the Audi at Audiworld.com and Audizine.com - they are both active forums with a lot of owners.