What Causes Engine Knocking in a Kia Rio?

I recently noticed a strange knocking noise coming from my Kia Rio's engine. What could be causing this issue and should I be worried? I want to ensure the longevity of my car and would appreciate any advice.

Engine knocking can be caused by a variety of issues, including low-quality fuel or a malfunctioning spark plug. It's important to have your car inspected by a mechanic as soon as possible to determine the root cause and prevent any further damage.

In some cases, engine knocking can also occur due to a lack of oil or oil that's past its expiration date. Make sure to regularly check and change your oil to avoid this issue.

If the knocking noise only happens when you accelerate, it could be a sign of a failing fuel pump. Have it checked and replaced if necessary.