Fuel octane rating

This octane rating is the average of the Research Octane and Motor Octane numbers and is commonly referred to as the Anti Knock Index (AKI).

Using a gasoline with a lower octane rating can cause persistent and heavy knocking, which can damage the engine.

Do not be concerned if your vehicle sometimes knocks lightly when you drive up a hill or when you accelerate. Contact your SUBARU dealer if you use a fuel with the specified octane rating and your vehicle knocks heavily or persistently.

    See also:

    Combination meter
    U.S.-spec. models (STI) 1) Fuel gauge 2) Tachometer 3) Speedometer 4) Trip meter A/B selection and trip meter reset knob 5) Odometer/Trip meter 6) Temperature gauge U.S.-spec. models (turbo ...

    Select lever
    The select lever has four positions, “P”, “R”, “N”, “D” and also has a manual gate for using the manual mode. ...

    Electronic compass display
    By briefly pressing the compass button, the compass display is toggled on or off. When the compass display is on, an illuminated compass reading will appear on the mirror. Using the electronic co ...