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:

    Security indicator light
    Type A Type B The security indicator light deters potential thieves by indicating that the vehicle is equipped with an immobilizer system. It begins flashing in the following ways. ...

    UP and DOWN buttons
    Models without Hands-free system Models with Hands-free system ...

    SAFETY
    Although the STi wasn't designed as a family car, all of the family-centric safety features on the Impreza sedan are in it. The STi has four-wheel-disc antilock brakes with brake assist, stability ...