What are the most common issues encountered with the transmission system in an Audi 80?

I recently bought an Audi 80 and have been experiencing some issues with the transmission system. I want to know what are the most common problems that might arise in this model and how can I prevent or fix them?

The most common issue with the transmission system in an Audi 80 is failure of the automatic transmission control unit. It is recommended to have this unit checked and possibly replaced every 70,000 miles. As a personal tip, regularly changing the transmission fluid can also help prolong its lifespan.