How can I diagnose engine issues in my Audi A2?

I've been experiencing strange sounds and performance problems in my Audi A2. What steps can I take to identify and diagnose any potential engine issues?

The first step would be to conduct a thorough visual inspection of your engine and its components. Check for any leaks, loose connections, or unusual wear and tear. It's also a good idea to run a diagnostic scan using a OBD II scanner.

You could also try listening for any abnormal noises while the engine is running, such as ticking or knocking sounds. These could indicate issues with certain components, such as the valves or bearings.