Kia Optima: Fuel requirements

Your new Kia vehicle is designed to use only unleaded fuel having a pump octane number ((R+M)/2) of 87 (Research Octane Number 91) or higher.

Your new vehicle is designed to obtain maximum performance with UNLEADED FUEL, as well as minimize exhaust emissions and spark plug fouling.

CAUTION

Never add any fuel system cleaning agents to the fuel tank other than what has been specified. (Consult an authorized Kia dealer for details.)

WARNING

• Do not "top off" after the nozzle automatically shuts off when refueling.
• Tighten the cap until it clicks one time, otherwise the Check Engine light will illuminate.
• Always check that the fuel cap is installed securely to prevent fuel spillage in the event of an accident.

• Gasoline containing alcohol and methanol
• Use of MTBE
• Do not use methanol
• Fuel Additives
• Operation in foreign countries