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This navigation system is equipped with an
Eco-driving function that can be used to esti-
mate whether you are driving in an environ-
mentally friendly way.
This chapter describes this function.
! The fuel mileage calculatedis based on a
theoretical value determined from vehicle
speed and position information from the
navigation system. The fuel mileage dis-
played is only a reference value, and does
not guarantee the mileagedisplayed can be
obtained.
! The Eco-driving functionsare an estimate
of the real time fuel consumption to aver-
age fuel consumption ratio and is not an
actual value.
! The Eco-driving functionsand calculations
take into consideration thelocation of the
GPS position and speed of thevehicle in de-
termining a value.
Displaying “Eco Graph”
This function estimates approximate fuel mile-
age based on your driving, compares that with
your average fuel mileage in the past, and dis-
plays the results in a graph.
1 Touch [Home] on the map screen and
then touch [Navigation].
= For details of the operations, refer to Screen
switching overview on page 28.
2 Touch [Eco Graph].
p You can also touch on the map
screen to display the “Eco Graph”.
Reading the screen
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3
4
1
1 Average fuel mileage comparison graph
Displays a comparison of the average fuel
mileage up to the point the navigation system
was last stopped (past average fuel mileage)
and the current average fuel mileage. The dis-
play is updated every 3 seconds. The morethe
value moves in the direction of +, the better
the fuel mileage.
There are three different graph bars.
! Total
A comparison of the past average fuel
mileage and the average fuel mileage
from the location the navigation system
was last started to the current driving lo-
cation.
!
: Ordinary Road
A comparison of the past average fuel
mileage and the average fuel mileage
for 90 seconds in the past, while the ve-
hicle is driving on an ordinary road.
!
: Freeway
A comparison of the past average fuel
mileage and the average fuel mileage
for 90 seconds in the past, while the ve-
hicle is driving on a freeway.
2 Eco Score
The result of the comparison of your past aver-
age fuel mileage and current average fuel
mileage appears as a value from 0.0 Pts
(points) to 10.0 Pts. The higher the value, the
better the fuel mileage when compared to
past route guidance.
p This is not displayed when “Eco Score”
is set to “Off” or when no route is set.
3 Best Score
Displays the best score to date.
p This is not displayed when “Eco Score”
is set to “Off” or when no route is set.
En
37
Chapter
07
Eco-driving function
Eco-driving function