Just a bit of advise about garages and services ...
I have to do mine but i looked online for parts etc...
So for full set of parts i paid online £150 and i know these are good quality parts , not the cheapest garage will get
Also cabin and air filter i changed myself. 10 min job ! I will attempt to change oil filter as well as looking on yt that is 15 min job.
I would do the oil change as well but i have not got the space...
Now talking about engine oil ... for audi diesel cars the oil needs to be 504.00/507.00 spec , god knows what oil garage is using
So that is my view on garages 🙂 advice is to ask ask and ask lots of questions and request info on parts they use? It would be intresting what answer would they give
And yes i know the stamp in the book may be important for selling the car ...