What is the most common cause of stalling in the Audi 80?

I have a 1999 Audi 80 and it has been stalling frequently. I have tried changing the spark plugs and air filter, but the issue persists. What is the most common issue causing this stalling problem?

The most common cause of stalling in the Audi 80 is a faulty fuel pump. It is important to check the fuel pressure and replace the fuel pump if necessary.

Another common cause of stalling in the Audi 80 is a clogged fuel filter. It is recommended to replace the fuel filter every 15,000 miles to prevent this issue.