Why is my Kia Stonic's acceleration weak?

I've noticed that my Kia Stonic's acceleration has been weaker than usual. Can this issue be resolved with simple maintenance, or is it a larger mechanical problem?

It's possible that your Kia Stonic's acceleration is weak due to a clogged air filter. Try replacing the air filter first and see if that improves the acceleration.

If you've been using regular unleaded fuel, try switching to premium fuel. Premium fuel has higher octane levels which can improve acceleration.

Another potential issue could be a malfunctioning fuel injector. Consider having a mechanic check the fuel injectors for any issues.