2012 BMW 640I CONVERTIBLE fuel consumption

Displaying the cruising range
1.
"Settings"
2. "Info display"
3. "Additional indicators" The range is displayed in the instrument cluster.
Tachometer
Always avoid engine speeds in the red warning
field.
In this range, the fuel supply is interrupted
to protect the engine.
Engine oil temperature
▷Cold engine: the pointer is at
the low temperature end.
Drive

at moderate engine and
vehicle speeds.
▷ Normal operating tempera‐
ture:

the pointer is in the mid‐
dle or in the left half of the
temperature display.
▷ Hot engine: the pointer is at the high tem‐
perature end. A Check Control message is
displayed in addition. Coolant temperature
Should the coolant, and with it the engine, be‐
come too hot, a Check Control message is dis‐
played.
Check the coolant level, refer to page
239.
External temperature
External temperature warning If the display drops to +37 ℉/
+3 ℃, a signal sounds.
A Check Control message is dis‐
played.
There is the increased danger of
ice.
Ice on roads
Even

at temperatures above +37 ℉/+3 ℃,
there can be a risk of ice on roads.
Therefore, drive carefully on bridges and shady
roads, for example, to avoid the increased dan‐
ger of an accident.◀
Current fuel consumption
Displays the current fuel con‐
sumption. You can check
whether you are currently driving
in an efficient and environmen‐
tally-friendly manner.
Displaying the current fuel
consumption
1. "Settings"
2. "Info display"
3. "Additional indicators" Seite 75
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Reference Mobility Communication Entertainment Navigation Driving tips
Controls At a glance

The bar display for the current fuel consumption
is displayed in the instrument cluster.
Energy recovery
The energy of motion of the ve‐
hicle
is converted to electrical en‐
ergy while coasting. The vehicle
battery is partially charged and
fuel consumption can be low‐
ered.
Odometer and trip odometer ▷Odometer, arrow 1.
▷ Trip odometer, arrow 2.
Display/reset miles Press the knob.
▷When the ignition is switched
off,

the time, external temper‐
ature and odometer are dis‐
played.
▷ When the ignition is switched on, the trip
odometer is reset.
Time The time is displayed at the bot‐
tom of the instrument cluster.
Setting

the time and time format,
refer to page 79.
Date The date is displayed in the in‐
strument cluster.
Setting the date and date format,
refer to page 80. Selection lists in the
instrument cluster
The concept
The following can be operated using the buttons
and the thumbwheel on the steering wheel:
▷
Current audio source.
▷ Redial on telephone*.
▷ Activation of the voice activation system*.
Activating a list and creating the
setting Press a button on the right side of the steering
wheel

or turn the thumbwheel to activate the re‐
quired list.
Create the setting using the thumbwheel.
Computer
Indication in the info display
The information from the com‐
puter is shown in the Info display
in the instrument cluster. Seite 76
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Displays

Calling up information on the info
display
Press the computer button on the turn signal
lever.
Information
is displayed on the info display of the
instrument cluster.
Information at a glance
Repeatedly pressing the button on the turn sig‐
nal lever calls up the following information on the
info display:
▷ Range.
▷ Average fuel consumption.
▷ Average speed.
▷ Date*.
▷ Time of arrival*
When destination guidance is activated in
the navigation system.
▷ Distance to destination*
When destination guidance is activated in
the navigation system.
▷ Arrow view of navigation system*
When destination guidance is activated in
the navigation system.
Adjusting the info display
You can select what information from the com‐
puter

is to be displayed on the info display of the
instrument cluster.
1. "Settings"
2. "Info display" 3.
Select the desired displays. Information in detail
Range
Displays the estimated cruising range available
with the remaining fuel.
It is calculated based on your driving style over
the last 20 miles/30 km. If there is only enough
fuel left for less than 45 miles/80 km, the color
of the display changes.
Average fuel consumption
This

is calculated for the period during which the
engine is running.
The average fuel consumption is calculated on
the basis of various distances.
Average speed
Periods in which the vehicle is parked with the
engine stopped do not enter into the calculation.
Resetting average values
Press and hold the computer button on the turn
signal lever.
Distance to destination*
The distance remaining to the destination is dis‐
played if a destination is entered in the naviga‐
tion system* before the trip is started.
The distance to the destination is adopted au‐
tomatically.
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Controls At a glance

Time of arrival*
The estimated time of arrival is
displayed if a destination is en‐
tered in the navigation system
*
before the trip is started.
The time must be correctly set.
Speed limit
Display of a speed limit which, when reached,
should cause a warning to be issued.
Renewed warning if the vehicle speed drops be‐
low the set speed limit once by at least 3 mph/
5 km/h.
Displaying, setting or changing the
limit
1. "Settings"
2. "Speed"
3. "Warning at:" 4.
Turn the controller until the desired limit is
displayed.
5. Press the controller.
The speed limit is stored.
Activating/deactivating the limit
1. "Settings"
2. "Speed"
3. "Warning"
4. Press the controller.
Applying your current speed as the
limit
1. "Settings"
2. "Speed" 3.
"Select current speed"
4. Press the controller.
The current vehicle speed is stored as the
limit.
Resetting values
The average fuel consumption and average
speed can be reset.
Press

and hold the computer button on the turn
signal lever.
Trip computer
There are two types of computer.
▷ "Onboard info": the values can be reset as
often as necessary.
▷ "Trip
computer": the values provide an over‐
view of the current trip.
Resetting the trip computer
1. "Vehicle Info"
2. "Trip computer"
3. "Reset": all values are reset.
"Automatically reset": all values are reset
approx.

4 hours after the vehicle comes to a
standstill. Display on the Control Display
Display the computer or trip computer on the
Control Display.
1.
"Vehicle Info"
2. "Onboard info" or "Trip computer"
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Displays

Resetting the fuel consumption or
speed
1.
"Vehicle Info"
2. "Onboard info"
3. "Cons." or "Speed" 4.
"Yes"
Gear shift indicator*
The concept
The
system recommends the most fuel efficient
gear in the current driving situation.
Indicators to shift up or down are displayed in
the instrument cluster.
Displays 1
Fuel efficient gear is engaged
2 Shift up to fuel efficient gear
3 Shift down to fuel efficient gear Settings on the Control
Display
Time
Setting the time zone

*
1. "Settings"
2. "Time/Date"
3. "Time zone"
4. Select the desired time zone.
The time zone is stored.
Setting the time
1. "Settings"
2. "Time/Date"
3. "Time:" 4.
Turn the controller until the desired hours
are displayed.
5. Press the controller.
6. Turn the controller until the desired minutes
are displayed.
7. Press the controller.
The time is stored.
Setting the time format
1. "Settings"
2. "Time/Date"
3. "Format:"
4. Select the desired format.
The time format is stored.
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Reference Mobility Communication Entertainment Navigation Driving tips
Controls At a glance

Date
Setting the date
1.
"Settings"
2. "Time/Date"
3. "Date:"
4. Turn the controller until the desired day is
displayed.
5. Press the controller.
6. Make the necessary settings for the month
and year.
The date is stored.
Setting the date format
1. "Settings"
2. "Time/Date"
3. "Format:"
4. Select the desired format. The date format is stored.
Language
Setting the language
To set the language on the Control Display:
1.
"Settings"
2. "Language/Units" 3.
"Language:" 4.
Select the desired language.
The setting is stored for the remote control cur‐
rently in use.
Setting the voice dialog
*
Voice dialog for the voice activation system*,
refer to page 26.
Units of measure
Setting the units of measure
To set the units for fuel consumption, route/dis‐
tance and temperature:
1. "Settings"
2. "Language/Units"
3. Select the desired menu item. 4.
Select the desired unit.
The setting is stored for the remote control cur‐
rently in use.
Brightness
Setting the brightness
To set the brightness of the Control Display:
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Displays

4.
The resulting figure equals the available
amount
of cargo and luggage load capacity.
For example, if the YYY amount equals
1,000 lbs and there will be four 150 lbs pas‐
sengers in your vehicle, the amount of avail‐
able cargo and luggage load capacity is
400 lbs: 1,000 lbs minus 600 lbs = 400 lbs.
5. Determine the combined weight of luggage
and

cargo being loaded on the vehicle. That
weight may not safely exceed the available
cargo and luggage load capacity calculated
in Step 4.
Load The maximum load is the sum of the weight of
the occupants and the cargo.
The greater the weight of the occupants, the
less cargo that can be transported.
Stowing cargo
▷
Heavy cargo: stow as far forward and as low
as

possible, ideally directly behind the cargo
area separating wall.
▷ Very heavy cargo: when the rear seat is not
occupied, secure each of the outer safety
belts in the opposite buckle.
▷ Cover sharp edges and corners. Securing cargo
Lashing eyes in the cargo area
To secure the cargo, there are four lashing eyes
in the cargo area
Securing cargo
▷
Smaller and lighter items: secure with re‐
taining straps or with a

cargo net* or draw
straps.
▷ Larger and heavy objects: secure with cargo
straps*.
Cargo straps, cargo netting, retaining straps or
draw straps on the lashing eyes in the cargo
area.
Securing cargo
Always position and secure the cargo as
described

above; otherwise, it can endanger the
car's occupants if sudden braking or swerving
becomes necessary.
Heavy or hard objects should not be carried
loose inside the car; otherwise, they could be
thrown around as a result of hard braking, sud‐
den swerves, etc., and endanger the occu‐
pants.◀
Saving fuel
General information
Your vehicle contains advanced technology for
the reduction of fuel consumption and emis‐
sions.
Fuel consumption depends on a number of dif‐
ferent factors. Seite 141
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Driving tips Controls At a glance

The implementation of certain measures, driv‐
ing style and regular maintenance can have an
influence on fuel consumption and on the envi‐
ronmental impact.
Remove unnecessary cargo
Additional weight increases fuel consumption.
Remove attached parts following use
Attached parts on the vehicle impair the aero‐
dynamics and increase the fuel consumption.
Closing the windows
Open windows increase air resistance and
therefore lead to greater fuel consumption.
Check the tire inflation pressure
regularly
Check
and, if necessary, correct the tire inflation
pressure at least twice a month and before start‐
ing on a long trip.
Low tire inflation pressure increases rolling re‐
sistance and thus raises fuel consumption and
tire wear.
Drive away without delay
Do not wait for the engine to warm up while the
vehicle remains stationary. Start driving right
away, but at moderate engine speeds.
This is the fastest way for the cold engine to
reach its operating temperature.
Look well ahead when driving
Avoid unnecessary acceleration and braking.
By maintaining a suitable distance to the vehicle
driving ahead of you.
Driving smoothly and looking ahead reduces
fuel consumption.
Avoid high engine speeds
Use 1st gear to get the vehicle in motion. Be‐
ginning with 2nd gear, accelerate rapidly. When
accelerating, shift up before reaching high en‐
gine speeds. When you reach the desired speed, shift into the
highest applicable gear and drive with the en‐
gine
speed as low as possible and at a constant
speed.
As a rule: driving at low engine speeds lowers
fuel consumption and reduces wear.
The gear shift indicator* of your vehicle indi‐
cates the most fuel efficient gear.
Use coasting conditions
When approaching a red light, take your foot off
the accelerator and let the vehicle coast to a halt.
On a downhill gradient, take your foot off the ac‐
celerator and let the vehicle roll.
The flow of fuel is interrupted while coasting.
Switch off the engine during longer
stops
Switch off the engine during longer stops, e.g.,
at traffic lights, railroad crossings or in traffic
congestion.
Fuel savings are achieved after the vehicle is
switched off for only approx. 4 seconds.
Switch off any functions that are not
currently needed
Functions such as seat heating and the rear win‐
dow defroster require a lot of energy and con‐
sume additional fuel, especially in city and stop-
and-go traffic.
Therefore, switch off these functions if they are
not actually needed.
Have maintenance carried out
Have vehicles maintained regularly to achieve
optimal vehicle economy and operating life.
Have the maintenance carried out by your serv‐
ice center.
Please also note the BMW Maintenance Sys‐
tem.
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Things to remember when driving