Non-turbo models

The engine is designed to operate using unleaded gasoline with an octane rating of 87 AKI (90 RON) or higher.

    See also:

    Turbocharged Power
    The 2.5-liter four-cylinder engine from last year's WRX really is a hoot to drive, and it's just as strong in the 2009 Impreza 2.5GT. Whether you're cruising around the city or driving on the high ...

    Outside temperature indicator
    1) U.S.-spec. models 2) Except U.S.-spec. models The outside temperature indicator shows the outside temperature in a range from −22 to 1228F (−30 to 508C). The indicator can give a ...

    If no steam is coming from the engine compartment
    NOTE For details about how to check the coolant level or how to add coolant, refer to “Engine coolant” F11-17. 1. Keep the engine running at idling speed. 2. Open the hood to ventilate the engine ...