Troubleshooting Kia Stonic Engine Performance Issues

My Kia Stonic is experiencing a decrease in engine performance, with a noticeable rough idle and lag in acceleration. What could be causing this and what should I do to fix it?

This could be due to a variety of reasons, such as a faulty spark plug or a clogged air filter. It's best to take your car to a trusted mechanic for a diagnosis.

I had a similar issue with my Kia Stonic and it turned out to be a problem with the fuel injectors. Make sure to get them checked and replaced if necessary.

It could also be an issue with the engine sensors, which can affect the fuel-air mixture and cause a decrease in performance. Get them checked as well.