Why does the judder occur in the Audi A8 transmission?

I have been experiencing a judder in the transmission of my Audi A8. It seems to happen during shifting and it's becoming more frequent. What could be the cause of this issue and how can I fix it?

The judder is most likely caused by worn out transmission fluid. It's important to regularly change it to avoid any potential issues. I recommend bringing your car to a certified mechanic to have it checked.

Another possible cause could be a damaged torque converter. This could be due to excessive heat or wear and tear. I suggest having a professional take a look at it before the issue becomes more severe.