Why is my Volkswagen Polo's engine making strange noises?

I recently noticed that my Volkswagen Polo's engine has been making some strange noises. It almost sounds like a knocking or rattling noise. What could be causing this and how can I fix it?

It's possible that there is an issue with the engine's timing or spark plugs. I would recommend taking your car to a trusted mechanic to have it checked out.

Another possibility is that your engine is low on oil, which can cause strange noises. Check your oil levels and add more if necessary.

If your Polo is an older model, it's possible that the timing belt may need to be replaced. This should be done every 60,000-100,000 miles to avoid potential engine damage.