Advise on owning An Audi

Hello i e been considering financing an Audi A5 I have never owned a German car before but have test drove BMW, Mercedes and Audi. I must say it drove lovely and handled nice.

Listening to others saying that they are money pits made me think they must be them as the owner not maintaining them correctly or doing stuff they are not supposed to.

Any advise you can give would be appreciated