Volkswagen Golf GTI 2016 Owner's Manual page 1027

NOTICE
Failure to heed warning lights or text WARNINGS can result in
vehicle damage.
Never drive until the fuel tank is completely empty. The
irregular fuel supply can cause the engine to misfire. This
allows unburned fuel to get into the exhaust system and
damage the catalytic converter.
The small arrow next to the gas pump symbol in the fuel gauge → Fig. 186 shows
the side of the vehicle with the fuel filler flap.
a)
Displayed in color on an instrument cluster with color display.
Refueling