fuel consumption OPEL ASTRA K 2018.75 Manual user

Instruments and controls107The LED status shows the current
operating mode.LED 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 3 223.
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.

118Instruments and controlsTrip / 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 ● AdBlue levelOn 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.

Instruments and controls119When 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 3 114.
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.
Fuel 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 3 259.
Traffic sign assistant
Displays the detected traffic signs for
the current route section 3 214.
Following Distance
Displays the distance in seconds to a
preceding moving vehicle 3 199. 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.

120Instruments and controlsAdBlue
Indicates an estimate of the AdBlue
level. The number of percentage
means the remainder of AdBlue.
Additionally, it is indicated whether
the level is sufficient or low.
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.Economy 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 average fuel consumption is indicated on an economic scale. For
economical driving, adapt driving
style to keep the indicator within the
green area. The more the indicator
moves towards red, the higher is the
fuel consumption. Simultaneously the
average consumption value is
indicated.
Depending on vehicle version, the
Eco Index shows values referring to
trip odometer page A/1 or the current
driving cycle. In the last case, the
indicator is reset when ignition is
switched on the next time.
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 andperforming of phone calls, scrolling
through contacts or operating
handsfree phoning.
See Infotainment manual.
Navigation menu
Navigation menu enables route
guidance.
See Infotainment manual.

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 exhaust filter may take place more
often.
Exhaust filter 3 168.
Autostop may be inhibited to allow for
charging of the vehicle battery.
Ignition switch positions
Turn key:

168Driving and operatingEngine exhaust9Danger
Engine exhaust gases contain
poisonous carbon monoxide,
which is colourless and odourless and could be fatal if inhaled.
If exhaust gases enter the interior
of the vehicle, open the windows.
Have the cause of the fault
rectified by a workshop.
Avoid driving with an open load
compartment, otherwise exhaust
gases could enter the vehicle.
Exhaust filter
The exhaust filter is a particle filter for diesel and gasoline engines.
Automatic cleaning process
The exhaust filter system filters 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 conditions, e.g. drivingshort 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 be
indicated by illumination of % and a
warning message in the Driver Information Centre.% illuminates along with a warning
message when exhaust filter is full.
Start cleaning process as soon as
possible.
% flashes along with a warning
message when exhaust 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 rpm. Shift down if
necessary. Exhaust filter cleaning is
then started.
Cleaning process is completed more quickly at high engine speeds and
loads.
Control indicator % extinguishes as
soon as the self-cleaning operation is complete. Keep on driving until self-
cleaning operation is complete.

Driving and operating221Fuel
Fuel for petrol engines
Only use unleaded fuel that complies
with European standard EN 228 or
equivalent.
The engine is capable of running with
fuel that contains up to 10% ethanol
(e.g. named E10).
Use fuel with the recommended
octane rating. A lower octane rating can reduce engine power and torque
and slightly increases fuel
consumption.
Caution
Do not use fuel or fuel additives
that contain metallic compounds
such as manganese-based
additives. This may cause engine
damage.
Caution
Use of fuel that does not comply to EN 228 or equivalent can lead todeposits or engine damage.
Caution
Use of fuel with a lower octane
rating than the lowest possible
rating could lead to uncontrolled combustion and engine damage.
The engine-specific requirements
regarding octane rating are given in
the engine data overview 3 289. A
country-specific label at the fuel filler
flap can supersede the requirement.
Fuel additives outside Europe
Fuel should contain detergent
additives that help prevent engine
and fuel system deposits from
forming. Clean fuel injectors and
intake valves will allow the emission
control system to work properly.
Some fuel does not contain sufficient
quantities of additive to keep fuel
injectors and intake valves clean.
To make up for this lack of
detergency, add Fuel System
Treatment PLUS to the fuel tank at
every engine oil change or every
15,000 km, whichever occurs first. It
is available at your workshop.
Fuels containing oxygenates such as
ethers and ethanol, as well as
reformulated fuel, are available in
some cities. If these fuels comply with the previously described
specification, then they are
acceptable to use. However, E85
(85% ethanol) and other fuels
containing more than 15% ethanol
must be used only in FlexFuel
vehicles.

Vehicle care231Vehicle careGeneral Information...................231
Accessories and vehicle modifications .......................... 231
Vehicle storage ........................232
End-of-life vehicle recovery .....232
Vehicle checks ........................... 233
Performing work ......................233
Bonnet ..................................... 233
Engine oil ................................. 234
Engine coolant ......................... 235
Washer fluid ............................ 236
Brakes ..................................... 236
Brake fluid ............................... 236
Vehicle battery ......................... 237
Diesel fuel system bleeding .....238
Wiper blade replacement ........238
Bulb replacement .......................239
Halogen headlights ..................239
Fog lights ................................. 241
Tail lights ................................. 242
Side turn lights ......................... 248
Number plate light ...................248
Interior lights ............................ 249
Instrument panel illumination ...249Electrical system ........................249
Fuses ....................................... 249
Engine compartment fuse box . 250
Instrument panel fuse box .......252
Load compartment fuse box ....254
Vehicle tools .............................. 256
Tools ........................................ 256
Wheels and tyres .......................258
Winter tyres ............................. 258
Tyre designations ....................258
Tyre pressure .......................... 258
Tyre pressure monitoring system .................................... 259
Tread depth ............................. 263
Changing tyre and wheel size . 264 Wheel covers ........................... 264
Tyre chains .............................. 264
Tyre repair kit .......................... 265
Wheel changing .......................268
Spare wheel ............................ 270
Jump starting ............................. 273
Towing ....................................... 275
Towing the vehicle ...................275
Towing another vehicle ...........276
Appearance care .......................277
Exterior care ............................ 277
Interior care ............................. 278General Information
Accessories and vehiclemodifications
We recommend the use of genuine
parts and accessories and factory
approved parts specific for your
vehicle type. We cannot assess or guarantee reliability of other products
- even if they have a regulatory or
otherwise granted approval.
Any modification, conversion or other
changes made to standard vehicle
specifications (including, without
limitation, software modifications,
modifications of the electronic control units) may invalidate the warranty
offered by Opel. Furthermore, such
changes may affect driver assistance
systems, may impact fuel
consumption, CO 2 emissions and
other emissions of the vehicle and
cause the vehicle to no longer
conform to the operating permit,
impacting the validity of your vehicle
registration.

Vehicle care259Always inflate the spare tyre to the
pressure specified for full load.
The ECO tyre pressure serves to
achieve the smallest amount of fuel
consumption possible.
Incorrect tyre pressures will impair
safety, vehicle handling, comfort and
fuel economy and will increase tyre
wear.
Tyre pressures differ depending on
various options.
For the correct tyre pressure value,
follow the procedure below:
● Identify the engine identifier code. Engine data 3 289.
● Identify the respective tyre.
● The tyre pressure tables show all
possible tyre combinations
3 298.
For the tyres approved for your
vehicle, refer to the EEC Certificate of
Conformity provided with your vehicle or other national registration
documents.
The driver is responsible for correct
adjustment of tyre pressure.9 Warning
If the pressure is too low, this can
result in considerable tyre warm-
up and internal damage, leading to tread separation and even to tyre
blow-out at high speeds.
9 Warning
For specific tyres the
recommended tyre pressure as
shown in the tyre pressure table may exceed the maximum tyre
pressure as indicated on the tyre.
Never exceed the maximum tyre
pressure as indicated on the tyre.
If the tyre pressure must be reduced
or increased on a vehicle with tyre
pressure monitoring system, switch
off ignition.
Temperature dependency
The tyre pressure depends on the
temperature of the tyre. During
driving, tyre temperature and
pressure increase. Tyre pressure
values provided on the tyre
information label and tyre pressure
chart are valid for cold tyres, which means at 20 °C.
The pressure increases by nearly
10 kPa for a 10 °C temperature
increase. This must be considered
when warm tyres are checked.
The tyre pressure value displayed in
the Driver Information Centre shows
the real tyre pressure. A cooled down tyre will show a decreased value,which does not indicate an air leak.
Tyre pressure monitoringsystem
The tyre pressure monitoring system
checks the pressure of all four tyres
once a minute when vehicle speed
exceeds a certain limit.Caution
Tyre pressure monitoring system
warns only about low tyre pressure condition and does not replace
regular tyre maintenance by the
driver.