What are the possible causes for the Kia Sportage's engine misfire?

I have been experiencing engine misfires in my Kia Sportage and it's starting to worry me. I want to make sure that I address the root cause of the issue. Can you provide some insights into what could be causing the misfires and how I can fix it?

One possible cause for engine misfires in the Kia Sportage is a faulty spark plug. It's important to check the condition of your spark plugs and replace them if necessary.

Another possible cause for engine misfires is a clogged fuel injector. Make sure to regularly clean or replace your fuel injector to prevent misfires.

A dirty air filter can also contribute to engine misfires. Be sure to check and replace your air filter if needed.

If you notice a decrease in fuel efficiency along with the engine misfires, it could indicate a problem with the fuel pressure regulator. This component may need to be replaced.