Audi A3 3.2 buying help

[Chisel]

Hey all.

 

So as stated am looking to buy a 3.2 A3. 

Previously owned a 2.0fsi so not astranged to the ranged. 

I do have some questions though:

 

Firstly I've alot advertised as S-line models but differ greatly some with very visible S-line badging on trims, wheel, body and Steering wheel. And some only on body or Trims. What are the differences and what should I be looking for? 

 

Secondly are their any major warning signs to look out for when test driving? 

 

Thirdly some models have the multi function Steering wheel, what functions do they cover and can you retro fit one if you purchase one without it? 

 

Much appreciate any help I can get.