Why is my Audi A7 experiencing engine stalling?

I recently purchased a used Audi A7 and have noticed that the engine sometimes stalls when I come to a stop. I've taken it to a mechanic, but they couldn't find any specific issues. What could be causing this problem and how can I fix it?

It's possible that there is an issue with your fuel system, such as a clogged fuel filter or a faulty fuel pump. These components should be checked and potentially replaced if necessary.

Another potential cause could be a malfunctioning idle control valve. If this valve is not functioning properly, it can cause stalling when the car is at a stop. Have your mechanic check this component and replace it if needed.

It's also important to regularly clean and maintain your air filter. A dirty air filter can restrict airflow to the engine, causing stalling and other issues. Make sure to replace your air filter according to the manufacturer's recommended schedule.