What is causing a strange noise from my Kia Rio's engine?

I recently noticed that there is a strange noise coming from my Kia Rio's engine. It's not very loud, but I'm worried it might be a sign of a larger problem. Can anyone tell me what could be causing this noise?

The most likely cause of this noise is a loose or worn belt in your engine. It's important to have it checked and replaced if necessary before it causes further damage.

Another possible cause could be a faulty pulley or tensioner in your engine. This can also cause strange noises and should be checked by a mechanic.

Sometimes debris can get caught in the engine's air filter, causing a strange noise. Check and replace your air filter if necessary.

In some cases, the noise could be coming from a loose or damaged exhaust pipe. Have your exhaust system checked by a professional to ensure proper functioning.