Subaru Legacy: Turbo models - Fuel requirements - Fuel - Starting and operating - Subaru Legacy Owners ManualSubaru Legacy: Turbo models

The engine is designed to operate at maximum performance using premium unleaded gasoline with an octane rating of 93 AKI or higher. If 93 AKI fuel is not readily available in your area, unleaded gasoline with an octane rating of 91 AKI may be used with no detriment to engine durability or driveability. However, you may notice a slight decrease in maximum engine performance while using 91 AKI fuel. Use of 91 AKI fuel will not affect your warranty coverage. If premium unleaded gasoline is not available, regular unleaded gasoline with an octane rating of 87 AKI or higher may be temporarily used. For optimum engine performance and driveability, it is required that you use premium grade unleaded gasoline.

NOTE

Be sure to use premium unleaded gasoline of 91 AKI or higher for a turbo engine model. If other gasoline (lower than 91 AKI) is used, knocking, reduced output and poor accelerator response will result.

    Non-turbo models
    The non-turbo engine is designed to operate using unleaded gasoline with an octane rating of 87 AKI or higher. ...

    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 p ...

    See also:

    Menu overview
    The number of menus shown depends on the optional equipment in the vehicle. 1. Trip menu 2. Navi menu (navigation instructions) 3. Audio menu 4. Tel menu (telephone) 5. DriveAssist. ...

    Headlight beam select
    1 To select the high beam function, push the lever forward. The high beam lights come on and the light illuminates. 2 Pull the lever back to select the low beam. 3 Pulling and releasing the lev ...

    Trunk lid (Legacy) – if the trunk lid cannot be opened
    The trunk lid can also be opened using the key. To open the trunk lid, insert the key into the key cylinder and turn it clockwise. ...