How do I troubleshoot a stalled engine in my Audi A5?

My Audi A5's engine keeps stalling and I have to restart it multiple times. It's been happening more frequently and I'm not sure what the issue could be. Any suggestions on how to troubleshoot this problem?

First, check to see if your fuel filter is clogged. A clogged fuel filter can cause the engine to stall. If the filter is dirty, you should replace it.

Another potential cause could be a faulty oxygen sensor. This sensor helps regulate the air-fuel mixture in your engine and if it's not functioning properly, it can cause stalling. Consider getting it checked and replaced if necessary.