Why is the Ford Fiesta's engine making a strange noise?

I have noticed that my Ford Fiesta's engine has been making a strange noise lately. It seems to occur when the car is idling or at low speeds. What could be causing this and how can I fix it?

It could be a sign of an issue with your timing belt or tensioner. It's best to take it to a mechanic for a proper diagnosis.

Check your oil levels and make sure it's not low. Low oil can cause strange noises in the engine.

It could be a problem with your exhaust system. Have a mechanic take a look at it.