Michail.
Something was lost in the translation as "sink" does not make sense in relation to a car. Do you mean "sump", the metal casing at the bottom of the engine?
Hi Guys
I've just received an email from Audi Customer Services in which they state :-
We have been contacted by Audi UK who have advised a system fix will be released on 25 January 2025 which will repair the faults you are experiencing.
Hope this helps with whatever decisions you make regarding keeping/ rejecting your cars.