Fuel Information - Toyota Yaris GRMN Owner's Manual

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8-1. Specifications

Fuel information

You must only use unleaded gasoline.
Select unleaded gasoline with a Research Octane Number of 97
or higher for optimum engine performance.
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If your engine knocks
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Consult any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
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You may occasionally notice light knocking for a short time while accelerat-
ing or driving uphill. This is normal and there is no need for concern.
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