See also:

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 ...

Kia Sorento owners manual
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Modest Acceleration: A Tale of Two Transmissions?
In the case of the Forte five-door, the added practicality seems to come at the expense of performance. As with the uplevel Forte SX sedan, the SX hatchback comes only with the larger of the Forte ...