How do I troubleshoot a faulty engine in my Audi A2?

I have been experiencing issues with my Audi A2's engine lately. It's been making strange noises and sometimes stalling while driving. What steps can I take to diagnose and fix this problem?

First, check the engine oil level and make sure it's not low. If it is, top it up with the recommended oil. If the problem persists, take your car to a trusted mechanic for a thorough inspection.

You can also try cleaning the spark plugs and replacing the air filter. These simple maintenance tasks can often improve engine performance. If the issue continues, it's best to seek professional help.

Another possible cause could be a faulty fuel pump or fuel filter. If your Audi A2's engine is not getting enough fuel, it can lead to performance problems. It's best to have these components checked and replaced if needed.