2003 Subaru Impreza Owner's Manual - Page 139

Instruments and controls after the engine speed is reduced below the red zone. NOTE J Fuel gauge 1) Low fuel warning light You will see the "FUEL DOOR p" sign near the fuel gauge. This indicates that the fuel filler door (lid) is located on the right side of the vehicle. B Low fuel warning light The low fuel warning light comes on when the tank is nearly empty [about 2.3 U.S. gal. (9.0 liters, 1.9 Imp. gal.]. It only operates when the ignition switch is in the "ON" position. The fuel gauge shows the approximate amount of fuel remaining in the tank. The gauge does not return to "E" even though the ignition switch is in the "ACC" or "LOCK" position. The gauge may move slightly during braking, turning or acceleration due to fuel level movement in the tank. 3-8