Why does my Kia Stonic have a rough idle?

I just purchased a Kia Stonic and noticed that it has a rough idle when I stop at a traffic light. Is this something I should be concerned about?

It is normal for a new car to have a slightly rough idle as the engine and parts break in. If the issue persists after a few weeks or you experience other symptoms, it would be best to take it to a mechanic for a check-up.

I had the same issue with my Kia Stonic. It turned out to be a faulty spark plug. Check with your dealer if they can replace it under warranty.

Make sure to use premium fuel in your Kia Stonic. This will help improve engine performance and reduce rough idling.

I have been driving a Kia Stonic for a few years now and have not experienced any rough idling. Maybe try using a fuel injector cleaner to see if it helps.