Mazda 3 Owner's Manual page 175

Distance-to-empty Mode
This mode displays the approximate distance you can travel on the remaining fuel based on
the fuel economy.
The distance-to-empty will be calculated and displayed every second.
NOTE
Even though the distance-to-empty display may indicate a suffi cient amount of
remaining driving distance before refuelling is required , refuel as soon as possible if
the fuel level is very low or the low fuel warning light illuminates.
The display will not change unless you add more than approximately 9 L (2.3 US gal,
1.9 Imp gal) of fuel.
The distance-to-empty is the approximate remaining distance the vehicle can be driven
until all the graduation marks in the fuel gauge indicating the remaining fuel supply
disappear.
Average Fuel Economy Mode
This mode displays the average fuel economy by calculating the total fuel consumption
and the total travelled distance since purchasing the vehicle, re-connecting the battery after
disconnection, or resetting the data.
The average fuel economy is calculated and displayed every minute.
To clear the data being displayed, press the INFO button for more than 1.5 seconds. After
pressing the INFO button, - - - L/100 km (- - - mpg) will be displayed for about 1 minute
before the fuel economy is recalculated and displayed.
Instrument Cluster and Display
When Driving
4–35