I needed a tow bar for work,, I only needed to work with about 350Kg. I was told by four independent towing companies,, no can go on an A2. If it is not listed then they won’t touch it,, all due to rules and regs.
I spoke to Audi and the official line was, yes you can have one but only if ordered at the factory and only on 2003 models onwards.
I have now looked under my car at this rather neat detachable tow bar and also underneath a standard A2 and there appears to be a few minor mods to the chassis to accommodate the towing kit.
There is also the fact the wiring has to be taken care of and also the changes made to the DIS and basic instrument panel display when you are actually towing.
I am sure I will discover other things but I haven’t brought a trailer yet so I can’t say.
Max weight on the towing ball is 50Kg and I was told that adjustments have been made/allowed for in my sports suspension,, not too sure if this true as I can not prove it.
By the way if you do buy a factory fitted one then it needs an a 7 pin UK adapter which Audi sell for £90 + vat but I got an identical one from my local towing company, who sell them to my local Audi dealer, for £13.25 inc VAT.