Why is my Kia Sportage experiencing a rough idle?

I have a 2016 Kia Sportage and recently it has been experiencing a rough idle. When stopped at a red light, the car shakes and the RPMs go up and down. What could be causing this issue and how can I fix it?

This could be caused by a faulty idle air control valve. I would recommend replacing it to see if that solves the issue.

Another possible cause could be a dirty or clogged fuel filter. Try replacing the fuel filter and see if that improves the idle.

In some cases, a rough idle can be caused by a vacuum leak. I would suggest checking for any cracked or loose vacuum hoses and replacing them if necessary.