See also:

Fuel requirements
Gasoline engine (unleaded) Your new Kia vehicle is designed to use only unleaded fuel with a minimum Octane Rating of 87 Anti- Knock Index (AKI). NOTICE NEVER USE LEADED FUEL. The use of leaded ...

Trim Levels:
2011 KIA Rio is available in two styles which include 4 door hatchback model and four door sedan. KIA Rio sedan model will be available in three trim levels which include base, LX and Sporty SX. ...

Fuel requirements
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 ...