Hello , Here to answer automotive questions and make you feel comfortable and become familiar with your product
The problem is inside the clutch pack of the trans. you can rebuild it with the updated parts or replace the entire trans.That is the only solution.
very common in audi cvt
What is the cause of this problem? Design or car owner? If I do nothing will it get worse? Ruin the transmission?
Which is cheaper, rebuild or new? Will it happen again?
You must renew with upgraded parts, or replace the trans. that has been reaired with upgraded parts. Basically the same price. but the rebuild only gets the parts that are needed.
It will happen again only if the trans was not rebuilt correctly
you will never get a BRAND NEW unit, they are always rebuilt. brand new is more expensive