2017.5 OPEL ASTRA K fuel consumption

Instruments and controls107LED off:petrol operationLED illu‐
minates:natural gas operationLED
flashes for
approx.
five
seconds:fuel mode transition is
selected but switching
is not possibleLED
flashes:fuel mode transition in
process, flashing stops
if transition is completed
Switching is not possible at high loads (e.g. powerful acceleration, driving at
full throttle).
If the selector switch is operated
several times within a short time, a
switchover inhibitor is activated. The
engine remains in the current
operating mode. The inhibitor
remains active until the ignition is
switched off.
A slight loss of power and torque can
be expected during petrol operation.
You must therefore adapt your driving style, e.g. during overtaking
manoeuvres and high vehicle loads
(e.g. towing loads) accordingly.
The vehicle consumes petrol when
starting the engine and even when in
certain natural gas operating modes. The petrol consumption in natural gas
operating mode can vary depending
on driving behaviour (e.g. high load or
towing). In case of a low fuel level, a
corresponding message is displayed
as a reminder to refuel.
Note
Always ensure that there is enough
petrol in the tank.
Fuel for natural gas operation 3 218.
Forced fuel mode transitionNatural gas tank is running low
As soon as the natural gas tank is
empty, petrol operation is
automatically engaged. Manually
engaging natural gas operation mode is not possible until natural gas
refuelling is detected.
Before the petrol fuel system runs empty, a warning message will be
displayed and cannot be dismissed.Petrol tank is running low while
natural gas is available
If the remaining petrol level in the tank falls below a certain level, natural gas
operation is automatically engaged
provided there is a sufficient natural
gas level in the tank. Manually
engaging petrol operation mode is not
possible.
Before both fuel systems run empty,
a warning message will be displayed
and cannot be dismissed.
Engine coolant temperaturegauge
Displays the coolant temperature.

Instruments and controls117● Navigation information,displayed by Navigation, see
description below.
● Vehicle information, displayed by
Options , see description below.
Some of the displayed functions differ
when the vehicle is being driven or at
a standstill and some functions are
only active when the vehicle is being
driven.
Selecting menus and functions
The menus and functions can be selected via the buttons on the right
side in the steering wheel.
Press p to open main menu page.
Select a main menu page with Q or
P .
Confirm a main menu page with 9.
Once a main menu page is selected, press Q or P to select subpages.
Press q to open a next folder of the
selected subpage.
Press Q or P to select functions or
to set a numeric value, if required.
Press 9 to select and confirm a
function.
Once a main menu page is selected, this selection remains stored until
another main menu page is selected.
Subpages are changed by pressing
P or Q.
Vehicle and service messages are
popped-up in the Driver Information Centre if required. Confirm messages by pressing 9. Vehicle messages
3 123.Trip/fuel information menu, ;
or Info
The following list contains all possible Info Menu pages. Some may not be
available for your particular vehicle.
Depending on the display, some
functions are symbolised.
Turn the adjuster wheel or press Q
or P to select a page:
● Trip odometer 1/2 or A/B
● Average fuel consumption
● Average speed
● Digital speed
● Fuel range
● Instantaneous fuel consumption
● Remaining oil life
● Tyre pressure
● Traffic sign assistant
● Following distance
● Timer
● Outside temperature

118Instruments and controlsOn Midlevel display the pages
Remaining Oil Life, Tyre Pressure,
Traffic Sign Assistant and Following
Distance are displayed in the Vehicle
information menu, select ?.
Trip odometer 1/2 or A/B
Trip odometer displays the current
distance since a certain reset.
Trip odometer counts up to a distance of 9,999 km then restarts at 0.
To reset on Midlevel display, press SET/CLR for a few seconds.
To reset on Uplevel display, press >
and confirm with 9.
The information of trip odometer page
1/A and 2/B can be reset separately
while the respective display is active.
Average Fuel Consumption
Display of average consumption. The measurement can be reset at any
time and starts with a default value.
To reset on Midlevel display, press
SET/CLR for a few seconds, on
Uplevel display, press > and confirm
with 9.On vehicles with bi-fuel engines:
Average consumption is indicated for
the currently selected mode, CNG or
petrol.
Average speed
Display of average speed. The
measurement can be reset at any
time.
To reset on Midlevel display, press
SET/CLR for a few seconds, on
Uplevel display, press > and confirm
with 9.
Digital speed
Digital display of the instantaneous
speed.
Fuel range
Range is calculated from current fuel
level and current consumption. The
display shows average values.
After refuelling, the range is updated
automatically after a brief delay.
When the level in the fuel tank is low,
a message appears on the display
and the control indicator Y in the fuel
gauge illuminates.When the fuel tank must be refuelled
immediately, a warning message
appears and remains on the display.
Additionally, control indicator Y in the
fuel gauge flashes 3 113.
Fuel range, bi-fuel engine
Display of the approximate total fuel
range and for each fuel tank (CNG
and petrol). A low fuel level in either
tank is indicated by Low in the
respective section.

Instruments and controls119Fuel level, bi-fuel engine
For bi-fuel engines, the Driver
Information Centre displays the fuel level for the fuel type which is
currently not in operation.
Instantaneous Fuel Consumption
Display of the instantaneous
consumption.
On vehicles with bi-fuel engines:
Instantaneous consumption is
indicated for the currently selected
mode, CNG or petrol.
Remaining Oil Life
Indicates an estimate of the oil's
useful life. The number in percentage means the remainder of current oil life 3 108.
Tyre Pressure
Checks tyre pressure of all wheels
during driving 3 256.
Traffic sign assistant
Displays the detected traffic signs for
the current route section 3 211.
Following Distance
Displays the distance in seconds to a
preceding moving vehicle 3 195. If
Adaptive cruise control is active this
page shows the following distance
setting instead.
Timer
To start and stop, press 9. To reset,
press > and confirm reset.
Outside temperature
Display of current outside
temperature.Eco information menu, @
● Top consumers
● Economy trend
● Eco index
On Uplevel display the pages Top
Consumers, Economy Trend and Eco
index, are displayed in the Trip/fuel
information menu, select Info.
Top Consumers
List of top comfort consumers
currently switched on is displayed in
descending order. Fuel saving
potential is indicated.
During sporadic driving conditions,
the engine will activate the heated
rear window automatically to increase the engine load. In this event, the
heated rear window is indicated as
one of the top consumers, without
activation by the driver.

120Instruments and controlsEconomy Trend
Displays the average consumption
development over a distance of
50 km. Filled segments display the
consumption in 5 km steps and shows the effect of topography or driving
behaviour on fuel consumption.
Economy index
The current fuel consumption is
indicated on an economic scale. For
economical driving, adapt driving
style to keep the filled segments
within the Eco area. The more
segments are filled, the higher the
fuel consumption.
Simultaneously the average
consumption value is indicated.
Audio menu
Audio menu enables browsing for
music, selecting from favourites or
changing the audio source.
See Infotainment manual.
Phone menu
Phone menu enables managing and performing of phone calls, scrolling
through contacts or operating
handsfree phoning.
See Infotainment manual.
Navigation menu
Navigation menu enables route
guidance.
See Infotainment manual.
Vehicle information menu, ? or
Options
The following list contains all possible Options Menu pages. Some may notbe available for your particular
vehicle. Depending on the display
some functions are symbolised.Turn the adjuster wheel or press Q
or P to select a page and follow the
instructions given in the submenus:
● Units
● Info pages
● Speed warning
● Tyre loading
● Software information
Units
Press SET/CLR or > while units is
displayed. Select imperial or metric
units by turning adjuster wheel or
pressing P. Confirm by pressing
SET/CLR or 9.
Info pages
Press > while Info pages is displayed.
A list of all items in the Info Menu is
displayed. Select the functions to be
displayed in the Info page by pressing 9 . Selected pages have a 9 in a
checkbox. Non-viewable functions
have a blank checkbox. See Info
Menu above.

Driving and operating157Driving and
operatingDriving hints ............................... 158
Control of the vehicle ...............158
Steering ................................... 158
Starting and operating ...............158
New vehicle running-in ............158
Ignition switch positions ...........158
Power button ........................... 159
Retained power off ..................160
Starting the engine ..................161
Overrun cut-off ........................ 163
Stop-start system ....................163
Parking .................................... 166
Engine exhaust .......................... 167
Diesel particle filter ..................168
Catalytic converter ...................168
Automatic transmission ..............169
Transmission display ...............169
Selector lever .......................... 169
Manual mode ........................... 170
Electronic driving programmes 171
Fault ........................................ 171
Interruption of power supply ....171
Manual transmission ..................172Manual transmission automa‐
ted .............................................. 173
Transmission display ...............173
Selector lever .......................... 174
Manual mode ........................... 175
Electronic driving programmes 175
Fault ........................................ 175
Brakes ........................................ 176
Antilock brake system .............176
Parking brake .......................... 177
Brake assist ............................. 179
Hill start assist ......................... 179
Ride control systems .................179
Traction Control system ..........179
Electronic Stability Control ......180
Sport mode .............................. 181
Driver assistance systems .........182
Cruise control .......................... 182
Speed limiter ........................... 184
Adaptive cruise control ............185
Forward collision alert .............193
Following distance indication ...195
Active emergency braking .......196
Parking assist .......................... 199
Side blind spot alert .................207
Rear view camera ...................208
Traffic sign assistant ................211
Lane keep assist .....................215Fuel............................................ 217
Fuel for petrol engines .............217
Fuel for diesel engines ............218
Fuel for natural gas operation . 218
Refuelling ................................ 218
Fuel consumption - CO 2-
Emissions ............................... 220
Trailer hitch ................................ 221
General information .................221
Driving characteristics and towing tips .............................. 222
Trailer towing ........................... 222
Towing equipment ...................223
Trailer stability assist ...............226

158Driving and operatingDriving hints
Control of the vehicle
Never coast with engine not
running
Many systems will not function in this situation ( e.g. brake servo unit, power
steering). Driving in this manner is a
danger to yourself and others.
All systems function during an
Autostop.
Stop-start system 3 163.
Idle boost
If charging of the vehicle battery is
required due to battery condition, the
power output of the generator must
be increased. This will be achieved by an idle boost which may be audible.
A message appears in the Driver
Information Centre.
Pedals
To ensure the pedal travel is
uninhibited, there must be no mats in
the area of the pedals.Use only floor mats, which fit properly and are fixed by the retainers on the
driver side.
Steering If power steering assist is lost
because the engine stops or due to a system malfunction, the vehicle can
be steered but may require increased
effort.Starting and operating
New vehicle running-in Do not brake unnecessarily hard for
the first few journeys.
During the first drive, smoke may
occur because of wax and oil
evaporating off the exhaust system.
Park the vehicle in the open for a
while after the first drive and avoid
inhaling the fumes.
During the running-in period, fuel and engine oil consumption may be
higher.
Additionally, the cleaning process of
the diesel particle filter may take
place more often.
Diesel particle filter 3 168.
Autostop may be inhibited to allow for
charging of the vehicle battery.
Ignition switch positions
Turn key:

168Driving and operatingDiesel particle filterAutomatic cleaning process
The diesel particle filter system filters
harmful soot particles out of the
exhaust gases. The system includes
a self-cleaning function that runs
automatically during driving without
any notification. The filter is cleaned
by periodically burning off the soot
particles at high temperature. This
process takes place automatically
under set driving conditions and may
take up to 25 minutes. Typically it
needs between seven and twelve
minutes. Autostop is not available
and fuel consumption may be higher
during this period. The emission of
smells and smoke during this process is normal.
System requires cleaning
Under certain driving conditions, e.g.
short distances, the system cannot
clean itself automatically.
If cleaning of the filter is required and if previous driving conditions did not
enable automatic cleaning, it will beindicated by % and a warning
message in the Driver Information
Centre.
% with a warning message
illuminates when diesel particle filter
is full. Start cleaning process as soon
as possible.
% with a warning message flashes
when diesel particle filter has reached the maximum filling level. Start
cleaning process immediately to
avoid damage to the engine.
Activate self-cleaning process
To activate cleaning process,
continue driving, keep engine speed
above 2000 revolutions per minute.
Shift down if necessary. Diesel
particle filter cleaning is then started.
Cleaning takes place quickest at high
engine speeds and loads.
The control indicator % extinguishes
as soon as the self-cleaning
operation is complete. Keep on
driving until self-cleaning operation is
complete.Caution
When possible, do not interrupt
cleaning process. Drive until
cleaning is completed to avoid
service or repair by a workshop.
Cleaning process not possible
If cleaning is not possible for any
reasons, Z illuminates and a warning
message appears in the Driver
Information Centre. Engine power
may be reduced. Seek the assistance
of a workshop immediately.
Catalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gases.