Subaru Forester: Fuel octane rating - Fuel requirements - Fuel - Starting and operating - Subaru Forester Owner's ManualSubaru Forester: 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.

    Turbo models
    The engine is designed to operate using premium unleaded gasoline with an octane rating of 91 AKI (95 RON) or higher. If premium unleaded gasoline is not available, regular unleaded gasoline ...

    Unleaded gasoline
    The neck of the fuel filler pipe is designed to accept only an unleaded gasoline filler nozzle. Under no circumstances should leaded gasoline be used because it will damage the emission contro ...

    See also:

    Operation under adverse driving conditions
    On a flooded road ● Avoid flooded roads. Water could enter the brake discs, resulting in temporarily ineffective brakes. In such cases, lightly depress the brake pedal to see if the brake ...

    Specifications
    Dimensions Weights Engine Capacities Capacities *1: Excluding the oil remaining in the engine *2: Including the coolant in the reserve tank and that remaining in the engine Reserve ...

    Steel cargo grid
    Your vehicle can be equipped with a steel grid that helps prevent objects in the cargo area from moving forward into the passenger compartment. ...