Why is my Kia Rio's engine running rough?

I recently purchased a used Kia Rio and I've noticed that the engine seems to run rough at times. What could be causing this issue?

It's possible that your spark plugs are worn out and need to be replaced. This can cause the engine to misfire and run rough.

Another potential cause could be dirty fuel injectors. Consider getting them cleaned or replaced if necessary.

The air filter may also be clogged, restricting air flow to the engine and causing it to run rough. Make sure to replace it regularly.