Audi A8   Controls   Instruments and warning/indicator lamps  Instruments
Driver information system in instrument cluster
Fig. 1 Driver information system in instrument cluster
The gauge -6- only works when the ignition is switched on. If there is less than 15 litres of fuel in the tank, 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 fuel range is shown in the tab -A- Fig. 1 on the display.
The tank capacity of your vehicle is given in the Technical data section Link.
Caution!
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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