See also:

2006 Kia Optima
Far more buyers of reasonably priced economy-oriented cars are likely to notice the much-improved revamped 2006 Kia Optima midsize sedan. The new Optima has slicker styling, more power and added s ...

Overheating
If your temperature gauge indicates overheating, if you experience a loss of power, or if you hear a loud knocking or pinging noise, the engine has probably overheated. Should any of these symptom ...

Engine cooling system
The high-pressure cooling system has a reservoir filled with year-round antifreeze coolant. The reservoir is filled at the factory. Check the antifreeze protection and coolant level at least once ...