Audi=No fault code, no idea
Sounds a good price to me. I doubt you will get more from them if thats the price they have given......but
Get them to pile on the things to the Q5 that dont cost them much, thats what i recently did. I couldn't shift them on price but i did get them to add autglym life shine, GAP insurance and an extra years warranty etc. That would have cost me a extra £1k but it cost them 2-300.
Ibis white Revo S3 and now matching Vivaro LWB HR 2900 :-)
Many people are alive because its illegal to shoot them.