Why is my Audi A1's engine making a knocking sound?

I recently noticed that my Audi A1's engine has been making a knocking sound while driving. It's been happening more frequently, especially when the car accelerates. What could be causing this and how can I fix it?

It's possible that there could be an issue with your engine's fuel injectors. They may need to be cleaned or replaced. I would recommend taking your car to a trusted mechanic for a diagnostic assessment.

Another possible cause for the knocking sound could be low engine oil levels. Check your car's oil level and top it up if necessary. If the sound persists, it's best to have a mechanic check for any other potential issues.

The knocking noise could also be due to a problem with your spark plugs. They may be worn out or faulty. I recommend having them checked and replaced if needed.