The needle shows the fuel present in the tank. When the fuel reserve warning light A-fig. 35 - 36 comes on (on certain versions with the dedicated message on the reconfigurable multifunction display) it means that there are approximately 5-7 liters of fuel left in the tank.
E - tank empty.
F - tank full.
Never travel with the tank almost empty: lack of fuel could damage the catalyser.

IMPORTANT
The needle will point to E and the reserve warning light A will flash to indicate a fault in the system. Contact a Fiat Dealership to have the system checked.
See also:
Activation
The sensors are automatically activated when the reverse gear is engaged.
The sound produced by the acoustic alarm becomes louder when the distance between
the car and the obstacle decreases. ...
Trip b ON/OFF (Trip B)
Through this option it is possible to activate (ON) or deactivate (OFF) the Trip
B (partial trip) which show “partial mission” information corresponding to: Trip
Dist. B, Avg. Consump. B, Avg. Spe ...
Possible presence of ice on the road
Warning message will appear and temperature indication will flash on the display
when the outside temperature reaches or falls below 3°C to warn the driver of the
possible presence of ice on the ...


