Ducati ST3 Owner's Manual page 116

"Average consumption" indication (fig. 11)
This function indicates the vehicle average consumption
when in motion. The calculation is based on the distance
travelled since the "TRIP meter" was last reset. When the
vehicle is stopped, either with the engine off or running,
the last value stored is displayed until indication is
refreshed.
"Fuel used" indication
This function indicates the fuel used by the vehicle to
E
travel the distance. The calculation is based on the
distance travelled since the "TRIP meter" was last reset.
When indication exceeds 9999.9 liters (2201.9 Imp. gal. -
2641.9 US gal.), the display shows a string of dashes
"- - . -".
fig. 11
19