Kia Soul: Fuel requirements
Your new 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.
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 - Refueling
- Do not "top off" after the nozzle automatically shuts off. Attempts to force more fuel into the tank can cause fuel overflow onto you and the ground causing a risk of fire.
- Always check that the fuel cap is installed securely to prevent fuel spillage in the event of an accident.
✽ NOTICE
Tighten the cap until it clicks one time, otherwise the fuel cap open warning
indicator 
light will illuminate.
- Gasoline containing alcohol and methanol
- Do not use methanol
- Fuel Additives
- Operation in foreign countries
How to use this manual
We want to help you get the greatest possible driving pleasure from your vehicle.
Your Owner’s Manual can assist you in many ways.We strongly recommend that you read
the entire manual. In order ...
Gasoline containing alcohol and methanol
Gasohol, a mixture of gasoline and ethanol (also known as grain alcohol), and
gasoline or gasohol containing methanol (also known as wood alcohol) are being marketed
along with or instead of leade ...
See also:
Check spark plugs and ignition system
Inspect your spark plugs as described in section 7 and replace them if necessary.
Also check all ignition wiring and components to be sure they are not cracked, worn
or damaged in any way. ...
To temporarily accelerate with the cruise control on
If you want to speed up temporarily when the cruise control is on, depress the
accelerator pedal. Increased speed will not interfere with cruise control operation
or change the set speed.
To retu ...