Hey C0mputer...
First Welcome to kia-forums...
Second...
Keep your attitude towards your RIO positive....
Check (and/or replace) your timing/cam belt...
They should be replaced EVERY 5yrs or 60k miles...
If this belt slips some teeth or breaks you will have a badly damaged engine if not totaled.
The belt usually breaks after 75~90k miles but they can hang in there longer..
Either park the car or drive the car very gently and carefully until the belt has been replaced. If you don't know and can't get info on past history...REPLACE the belt!
This WILL keep you in LOVE with your RIO...
Dave