Audi A3  Controls and displays  Instruments and warning/indicator lamps  Instruments
The gauge -6- Fig. 1 only works when the ignition is switched on. When the gauge reaches the reserve zone, the LED at the bottom of the dial will light up in red and the indicator lamp will appear Link. The LED at the bottom of the dial will flash in red if the fuel level is very low.
The instrument cluster display -4- Fig. 1 shows how far you can travel on the fuel left in the tank.
The tank capacity of your vehicle is given in the Technical data section Link.
You will find details about the gas fuel gauge* on Link.
Never run the tank completely dry. If there is an irregular fuel supply, misfiring can occur. Unburnt fuel can then enter the exhaust system. This can lead to overheating and damage to the catalytic converter.

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