See also:

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 pers ...

Sirius satellite radio
Sirius satellite radio is a recent innovation that allows the listener to experience digital sound quality and to have a greater variety of channels. Use of satellite radio (Sirius) requires a tuner, ...

Exterior
To the outside observer, little distinguishes the Impreza's various trim levels. The base side mirrors are black-colored and fold, and the door handles are body-colored. Fifteen-inch steel wheels ...