2011 BMW 128I COUPE fuel consumption

Controls
27Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
>Settings for the display on the Control Dis-
play and in the instrument cluster:
>12h/24h format of the clock, refer to
page74
>Date format, refer to page76
>Brightness of the Control Display, refer
to page79
>Language of the Control Display, refer to
page79
>Units of measure for fuel consumption,
distance covered/remaining distances,
and temperature, refer to page72
>Show visual warning for Park Distance Con-
trol PDC, refer to page80
>Light settings:
>Welcome lamps, refer to page91
>Pathway lighting, refer to page92
>Daytime running lights, refer to page92
>High-beam assistant
*, refer to page93
>Automatic climate control: activating/deac-
tivating AUTO program, cooling function
and automatic recirculated-air control, set-
ting temperature, air volume and distribu-
tion, refer to page97 ff
>Entertainment:
>Tone control, refer to page140
>Speed-dependent volume control, refer
to page140
Central locking system
The concept
The central locking system functions when the
driver's door is closed.
The system simultaneously engages and
releases the locks on the following:
>Doors
>Trunk lid
>Fuel filler flap
Operating from outside
>Via the remote control
>Via the door lock
*
>In cars with Comfort Access*, via the han-
dles on the driver's and front passenger
doors
In addition, if the remote control is used, the
welcome lamps
*, interior lamps and the door's
courtesy lamps
* are switched on or off. The
alarm system
* is also armed or disarmed.
For further details on the alarm system
*, refer
to page32.
Operating from inside
By means of the button for central locking, refer
to page30.
In the event of a sufficiently severe accident, the
central locking system unlocks automatically. In
addition, the hazard warning flashers and inte-
rior lamps come on.
Opening and closing:
Using the remote control
Persons or animals in a parked vehicle
could lock the doors from the inside. You
should therefore take the remote control with
you when you leave the vehicle so that the latter
can be opened from outside.<
Convertible: to operate the convertible
top with the remote control, the doors and
trunk lid must be closed and the cargo area par-
tition must be folded down and engaged on
both sides. Refer also to page40.<
Unlocking
Press the button.
The interior lamps, the courtesy lamps
* and the
welcome lamps come on.
Setting unlocking characteristics
You can set whether only the driver's door or
the entire vehicle is to be unlocked when the
button is pressed for the first time.

Controls
69Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Coolant temperature
A warning lamp will come on if the coolant, and
therefore the engine, becomes too hot.
In addition, a message will appear on the Con-
trol Display.
Check coolant level, refer to page206.
Engine oil temperature*
When the engine is at normal operating temper-
ature, the engine oil temperature is between
approx. 2107/1006 and approx. 3007/
1506.
If the engine oil temperature is too high, a mes-
sage appears on the Control Display.
Fuel gauge
Fuel tank capacity: approx. 14 US gallons/
53 liters.
You can find information on refueling on
page192.
If the tilt of the vehicle varies for a longer period,
when you are driving in mountainous areas, for
example, the indicator may fluctuate slightly.
Fuel display 135i: in speedometer.
Reserve
Once the fuel level has fallen to the reserve
zone, a message briefly appears on the Control
Display and the remaining cruising range is dis-
played on the computer. Under a cruising range
of approx. 30 miles/50 km, the message
appears continuously in the Control Display.
Refuel as soon as possible once your
cruising range falls below 30 miles/
50 km; otherwise, engine functions are not
ensured and damage can occur.<
Computer
Displays in the instrument cluster
Calling up information
Press the button in the turn signal/high beam
lever.
The following items of information are dis-
played in the order listed:
>Cruising range
>Average speed
>Average fuel consumption
>Current fuel consumption
>No information

Controls overview
70 To set the corresponding units of measure,
refer to Setting the units of measure on
page72.
Cruising range
Displays the estimated cruising range available
with the remaining fuel. The range is calculated
on the basis of the way the car has been driven
over the last 18 miles/30 km and the amount of
fuel currently in the tank.
It is important that you refuel as soon as
possible once your cruising range falls
below 30 miles/50 km; otherwise, engine func-
tions are not ensured and damage can occur.<
Average speed
Periods with the vehicle parked and the engine
switched off are not included in the calculations
of average speed.
With the trip computer, refer to page71, you
can have the average speed for another trip dis-
played.
To reset average speed: press the button in the
turn signal/high beam lever for approx.
2seconds.
Average fuel consumption
The average fuel consumption is calculated for
the time during which the engine is running.
With the trip computer, refer to page71, you
can have the average consumption for another
trip displayed.
To reset average fuel consumption: press the
button in the turn signal/high beam lever for
approx. 2 seconds.
Current fuel consumption
Displays the current fuel consumption. This
allows you to see whether your current driving
style is conducive to fuel economy with mini-
mum exhaust emissions.
Displays on the Control Display
The computer can also be opened via iDrive.1."Vehicle Info"
2."Onboard info" or "Trip computer"
Displays in "Onboard info":
>Cruising range
>Distance from destination
>Estimated time of arrival if:
>A distance was manually entered in the
computer, refer to the information
below.
>A destination was entered in the naviga-
tion system
*, refer to page121.
Displays in "Trip computer":
>Departure time
>Trip duration
>Trip distance

Controls
71Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Both displays show:
>The average speed and
>the average fuel consumption.
Resetting the fuel consumption and
speed
You can reset the values for average speed and
average consumption:1.Select the respective menu item and press
the controller.
2.Press the controller again to confirm your
selection.
Resetting the trip computer
You can reset all values:
1."Vehicle Info"
2."Trip computer"
3."Reset"
Settings and information
Operating principle
1Button for:
>Selecting display
>Setting values
2Button for:
>Confirming selected display or set val-
ues
>Calling up computer information69
3When the lights are on: instrument lighting
brightness95
4Calling up Check Control765Checking oil level203
6Setting the time74
7Setting the date75
8Viewing service requirement display72
Exiting displays
The outside temperature reading and the time
reappear when you press button2 or if you
make no entries within approx. 15 seconds. If
required, complete the current setting first.

Controls overview
72
Units of measure
The units of measure can be set.
Setting the units of measure
You can change the units for fuel consumption,
route/distance, temperature and pressure.
1."Settings"
2."Language/Units"
3.Select the desired menu item.
4.Select the desired unit.
The settings are stored for the remote control
currently in use.
Service requirements
The remaining driving distance and the date of
the next scheduled service are displayed briefly
immediately after you start the engine or switch
on the ignition.
The extent of service work required can
be read out from the remote control by
your BMW Service Advisor.<
For certain maintenance operations, you can
view the respective distance remaining or due
date individually in the instrument cluster.1.Switch on the ignition, refer to page55.
2.Push button 1 in the turn signal/high beam
lever up or down repeatedly until the appro-
priate symbol appears in the display,
accompanied by the words "SERVICE-
INFO".
3.Press button2.
4.Use button 1 to scroll through the individual
service items.

Things to remember when driving
112
Things to remember when driving
Break-in period
Moving parts need breaking-in time to adjust to
each other. Please follow the instructions below
in order to achieve the optimal service life and
economy of operation for your vehicle.
Engine and differential
Always obey all official speed limits.
Up to 1,200 miles/2,000 km
Drive at varying engine and road speeds, but do
not exceed an engine speed of 4,500 rpm or a
road speed of 100 mph/160 km/h.
Avoid full-throttle operation and use of the
transmission's kickdown mode.
After driving 1,200 miles/2,000 km
Engine and vehicle speeds can be gradually
increased.
Tires
Due to technical factors associated with their
manufacture, tires do not achieve their full trac-
tion potential until after an initial break-in
period. Therefore, drive cautiously during the
first 200 miles/300 km.
Brake system
Brakes require an initial break-in period of
approx. 300 miles/500 km to achieve optimized
contact and wear patterns between brake pads
and rotors. Drive cautiously during this break-in
period.
Clutch
The function of the clutch reaches its optimal
level only after a distance driven of approx.
300 miles/500 km. During this break-in period,
engage the clutch gently.
Following part replacement
The same break-in procedures should be
observed if any of the components mentioned
above have to be renewed in the course of the
vehicle's operating life.
Saving fuel
The fuel consumption of your vehicle depends
on several factors. You can lower fuel consump-
tion and the environmental impact by taking
certain measures, adjusting your driving style
and having the vehicle serviced regularly.
Remove any unneeded cargo
Additional weight increases fuel consumption.
Remove any mounted parts after you
have finished using them
Remove unneeded additional mirrors, the roof
rack and the rear luggage rack after use.
Mounted parts affect the vehicle's aerodynam-
ics and increase fuel consumption.
Close the windows and glass roof
An open glass roof or window causes higher air
resistance and thus increases fuel consump-
tion.
Check tire inflation pressure regularly
Check the tire inflation pressure at least twice a
month and before embarking on a long journey,
and correct it if necessary.
Low tire inflation pressure causes higher rolling
resistance and thus increases fuel consumption
and tire wear.
Set off immediately
Do not let the engine warm up while the car is
still standing, but set off immediately at moder-
ate engine speed. This is the fastest way for the
cold engine to reach its operating temperature.

Driving tips
113Reference
At a glance
Controls
Communications
Navigation
Entertainment
Mobility
Drive defensively
Avoid unnecessary acceleration and braking
maneuvers. To do so, keep an adequate dis-
tance between you and the vehicle in front of
you. A defensive and smooth driving style
keeps fuel consumption down.
Avoid high engine speeds
Only use first gear when setting off. In second
and higher gears, accelerate without hesitation
or pauses. When accelerating, shift up before
reaching high engine speeds.
When you reach the desired speed, shift into
the highest applicable gear and drive with the
engine speed as low as possible and at a con-
stant speed.
As a rule: driving at low engine speeds lowers
fuel consumption and reduces wear.
Coasting
When approaching a red light, take your foot off
the accelerator and coast to a stop in the high-
est applicable gear.
O n a d o w n h il l s lo p e , t a k e y o u r f o o t o f f t h e a c c el -
erator and coast in a suitable gear.
The fuel supply is interrupted when coasting.
Switch off the engine during lengthy
stops
Switch off the engine when stopping for lengthy
periods, e.g. at traffic lights, railroad crossings
or in traffic congestions. You achieve fuel sav-
ings even if standing time is as short as approx.
4 seconds.
Switch off functions you do not need at
the moment
Functions such as the air conditioner, seat
heating or rear window defroster draw large
amounts of power and consume additional fuel.
Especially in city traffic and in stop-and-go driv-
ing they have a considerable impact. Therefore,
switch these functions off when they are not
really needed.
Have the vehicle serviced
Have the vehicle serviced regularly to achieve
good economy and a long vehicle life. BMW
recommends having the vehicle serviced at a
BMW center. Also note the BMW service sys-
tem, refer to page207.
General driving notes
Close the trunk lid
Operate the vehicle only when the trunk
lid is closed. Otherwise, exhaust fumes
could enter the interior of the vehicle.<
If the vehicle must be driven with the trunk lid
open:
1.Close all windows and the glass roof.
2.Greatly increase the air volume of the auto-
matic climate control system, refer to
page98.
Hot exhaust system
In all vehicles, extremely high tempera-
tures are generated in the exhaust sys-
tem. Do not remove the heat shields installed in
its vicinity, and never apply undercoating to
them. When driving, standing at idle and while
parking, take care to avoid possible contact
between the hot exhaust system and any highly
flammable materials such as hay, leaves, grass,
etc. Such contact could lead to a fire, with the
risk of serious personal injuries and property
damage. Do not touch hot exhaust tail pipes.
Otherwise, there is a risk of burns.<
Hydroplaning
When driving on wet or slushy roads,
reduce road speed. If you do not, a wedge
of water can form between tires and road sur-
face. This situation, known as hydroplaning,
means that the tire can completely lose contact
with the road surface, so that neither the car can
be steered nor the brake be properly applied.<
The risk of hydroplaning increases with declin-
ing tread depth on the tires, refer also to Mini-
mum tread depth on page199.

Everything from A to Z
238
Everything from A to Z
Index
A
ABS Antilock Brake
System81
Acceleration assistant, refer to
Launch Control64
Accessories, refer to The
individual vehicle5
Accident, reporting, refer to
Emergency Request219
Activated-charcoal filter99
Activating
BMW Assist186,188
Active steering86
Adaptive light control92
Additives
– coolant205
– engine oil205
Address, entering121,127
Address for navigation
– entering121
Adjusting temperature97
Airbags88
– sitting safely43
– warning lamp89
Air conditioner96
Air distribution
– automatic97
Airing, refer to Ventilation99
Air outlets, refer to Air
vents96
Air pressure, checking, refer
to Tire inflation
pressure194
Air recirculation, refer to
Recirculated-air mode98
Air vents96
Air volume98
AKI, refer to Fuel
specifications193Alarm system32
– avoiding unintentional
alarms33
– interior motion sensor33
– switching off an alarm32
– tilt alarm sensor33
Albums of music
collection160
ALL program98
All-season tires, refer to
Winter tires201
AM, waveband143
Ambient air, refer to
Recirculated-air mode98
Antenna for mobile phone170
Antifreeze
– coolant205
– washer fluid66
Antilock Brake System
ABS81
Anti-theft alarm system, refer
to Alarm system
32
Anti-theft system27
Approved axle loads, refer to
Weights229
Approved engine oils205
Approved gross vehicle
weight, refer to Weights229
Armrest, refer to Center
armrest105
Arrival time
– computer70
Ashtray106
Assistance systems, refer to
Dynamic Stability Control
DSC81
AUC Automatic recirculated-
air control98
Audible instructions, refer to
Spoken instructions132Audio140
– controls140
– switching on/off140
– tone control140
– volume140
Automatic
– air distribution97
– air volume97
– cruise control66
– headlamp control91
Automatic car washes209
Automatic climate control96
Automatic curb monitor50
Automatic high beams and
low beams, refer to High-
beam assistant93
Automatic lamps
– refer to Welcome lamps91
Automatic recirculated-air
control AUC98
Automatic Service
Request188
Automatic transmission with
Steptronic57
– selector lever lock58
– shiftlock58
– towing221
– tow-starting221
AUTO program for automatic
climate control97
AUX-IN port163
Available services188
Average fuel consumption70
– setting the units72
Average speed70
Avoid highways in
navigation130
Avoiding unintentional
alarms33
Axle loads, refer to
Weights229