Troubleshooting: Why is my Audi A3 engine making unusual noises?

I've noticed that my Audi A3 engine is making some strange noises lately. Sometimes it's a clicking sound, other times it's a whining sound. I'm not sure what could be causing this. Any ideas?

It's likely that your engine is low on oil. Check your dipstick and see if the oil level is at the appropriate level. If not, top it off with the recommended oil for your Audi A3.

Another possible cause could be a loose or worn belt. Check your engine belts and tighten or replace them if necessary.

You may also want to check your spark plugs. If they're dirty or worn, they can cause strange noises from your engine. Consider replacing them if necessary.