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. See your dealer or a qualified service technician if you use a fuel with the specified octane rating and your vehicle knocks heavily or persistently.
See also:
Audio control buttons (if equipped)
Type A audio
Type B audio
These buttons are located on the spokes of the steering wheel. They allow the
driver to control audio functions without taking his/her hands off the steering
wheel. ...
2012 Subaru Impreza review
The redesigned 2012 Subaru Impreza's most compelling attributes are evident
before you even start the engine. Take a glance and you'll see more mature
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Tire pressure monitoring system (TPMS) (U.S.-spec. models)
Turbo models
Non-turbo models
The tire pressure monitoring system provides the driver with the warning message indicated by sending a signal from a sensor that is installed in each wheel when tire p ...
