Audi=No fault code, no idea
Air con problems are no more of a worry with Audi than any other make so no worries there. Most people with problems have older cars. mine is now 6 and has had no problems. what you should be aware of though is the A3/S3 air con is pretty poor overall and i doubt it will cope with 30c if its like the UK version. Try one in the show room on a hot day would be my advice. They never blow really cold like an A4 system.
Ibis white Revo S3 and now matching Vivaro LWB HR 2900 :-)
Many people are alive because its illegal to shoot them.