2015 BMW 2 SERIES CONVERTIBLE fuel consumption

Saving fuelVehicle features and optionsThis chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems. The respectively applicable country
provisions must be observed when using the
respective features and systems.
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.
Carrying out certain measures, such as a mod‐
erate driving style and regular maintenance,
can influence fuel consumption and 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.Tires
General information
Tires can affect fuel consumption in various
ways, e.g., tire size may influence fuel con‐
sumption.
Check the tire inflation pressure
regularly
Check and, if needed, correct the tire inflation
pressure at least twice a month and before
starting on a long trip.
Low tire inflation pressure increases rolling re‐
sistance and thus raises fuel consumption and
tire wear.
Drive away immediately
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 quickest way of warming the cold
engine up to operating temperature.
Look well ahead when
driving
Avoid unnecessary acceleration and braking.
By maintaining a suitable distance to the vehi‐
cle driving ahead of you.
Driving smoothly and proactively reduces fuel
consumption.
Avoid high engine speeds
As a rule: driving at low engine speeds lowers
fuel consumption and reduces wear.
Use 1st gear to get the vehicle moving. Start‐
ing with the 2nd gear, accelerate rapidly. WhenSeite 161Saving fuelDriving tips161
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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
engine speed as low as possible and at a con‐
stant speed.
If necessary, observe the gear shift indicator of
the vehicle, refer to page 87.
Use coasting When approaching a red light, take your foot
off the accelerator and let the vehicle coast to
a halt.
For going downhill take your foot off the accel‐
erator 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.
Auto Start/Stop function The Auto Start/Stop function of your vehicle
automatically switches off the engine during a
stop.
If the engine is switched off and then restarted
rather than leaving the engine running con‐
stantly, fuel consumption and emissions are
reduced. Savings can begin within a few sec‐
onds of switching off the engine.
In addition, fuel consumption is also deter‐
mined by other factors, such as driving style,
road conditions, maintenance or environmental
factors.Switch off any functions that
are not currently needed
Functions such as seat heating and the rear
window defroster require a lot of energy and
reduce the range, especially in city and stop-
and-go traffic.
Reel off these functions if they are not needed.
The ECO PRO driving program supports the
energy conserving use of comfort features.
These functions are automatically deactivated
partially or completely.
Have maintenance carried
out
Have vehicles maintained regularly to achieve
optimal vehicle efficiency and operating life.
The maintenance should be carried out by
your service center.
Also note the BMW Maintenance System, refer
to page 193.
ECO PRO
The concept
ECO PRO supports a driving style that saves
on fuel consumption. For this purpose, the en‐
gine control and comfort features, e. g. the cli‐
mate control output, are adjusted.
Under certain conditions the engine is auto‐
matically decoupled from the transmission in
the D selector lever position. The vehicle con‐
tinues traveling with the engine idling to re‐
duce fuel consumption. Selector lever position
D remains engaged.
In addition, context-sensitive instructions are
displayed to assist with an optimized fuel con‐
sumption driving style.
The achieved extended range is displayed in
the instrument cluster as bonus range.Seite 162Driving tipsSaving fuel162
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Overview
The system includes the following
EfficientDynamics functions and displays:▷ECO PRO bonus range, refer to page 163.▷ECO PRO tips driving instruction, refer to
page 164▷ECO PRO climate control, refer to
page 163.▷ECO PRO coasting driving status, refer to
page 165.▷ECO PRO driving style analysis, refer to
page 166.
Activate ECO PRO
Press button repeatedly until ECO
PRO is displayed in the instrument
cluster.
Configuring ECO PRO
Via the Driving Dynamics Control
1.Activate ECO PRO.2."Configure ECO PRO"3.Configure the program.
Via the iDrive
1."Settings"2."ECO PRO mode"
Or
1."Settings"2."Driving mode"3."Configure ECO PRO"
Configure the program.
ECO PRO Tip
▷"Tip at:":
Adjust the ECO PRO speed.▷"ECO PRO speed warning":
The output is reduced once the set ECO
PRO speed is reached.Coasting
Fuel-efficiency can be optimized by disengag‐
ing the engine and Coasting, refer to
page 165, with the engine idling.
This function is only available in ECO PRO
mode.
ECO PRO climate control
"ECO PRO climate control"
Climate control is set to be fuel-efficient.
By making a slight change to the set tempera‐
ture, or slowly adjusting the rate of heating or
cooling of the car's interior, fuel consumption
can be economized.
The mirror heating is made available when out‐
side temperatures are very cold.
ECO PRO potential Shows potential savings with the current set‐
tings in percentages.
Display in the instrument cluster
ECO PRO bonus range An adjusted driving style helps
you extend your driving range.
This may be displayed as the
bonus range in the instrument
cluster.
The bonus range is shown in the range display.
The bonus range is automatically reset every
time the vehicle is refueled.Seite 163Saving fuelDriving tips163
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Indications on the Control DisplayEfficientDynamics Information on fuel consumption and technol‐
ogy can be displayed while driving.1."Vehicle info"2."EfficientDynamics"
Displaying fuel consumption history
The average fuel consumption can be dis‐
played within an adjustable time frame.
Vertical bars show consumption for the se‐
lected time frame.
Trip interruptions are represented below the
bar on the time axis.
"Consumption history"
Adjusting fuel consumption history time frame
Select the symbol.
Resetting fuel consumption history
1.Open "Options".2."Reset consumption history"
Displaying EfficientDynamics info
The current efficiency can be displayed.
"EfficientDynamics info"
The following systems are displayed:
▷Auto Start/Stop function.▷Energy recovery.▷Climate control output.▷Coasting.
Display ECO PRO tips
"ECO PRO Tips"
Settings are stored for the profile currently in
use.
Coasting
The concept The system helps to conserve fuel.
To do this, under certain conditions the engine
is automatically decoupled from the transmis‐
sion when selector lever position D is set. The
vehicle continues traveling with the engine idling to reduce fuel consumption. Selector
lever position D remains engaged.
This driving condition is referred to as coast‐
ing.
As soon as you step on the brake or accelera‐
tor pedal, the engine is automatically coupled
again.
Hints
Coasting is a component of the ECO PRO, re‐
fer to page 162, driving mode.
Coasting is automatically activated when ECO
PRO mode is called via the Driving Dynamics
Control.
The function is available in a certain speed
range.
A proactively driving style helps the driver to
use the function as often as possible and sup‐
ports the fuel-conserving effect of coasting.
Safety mode
The function is not available under one of the
following conditions.▷DSC OFF or TRACTION activated.▷Driving in the dynamic limit range and on
steep uphill or downhill grades.▷Battery charge status temporarily too low
or vehicle electrical system drawing exces‐
sive current.▷Cruise control activated.
Functional requirements
In ECO PRO mode, this function is available in
a speed range from approximately 30 mph, ap‐
Seite 165Saving fuelDriving tips165
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Engine oilVehicle features and options
This chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems. The respectively applicable country
provisions must be observed when using the
respective features and systems.
General information The engine oil consumption is dependent on
the driving style and driving conditions.
The engine oil consumption can increase in
case of, for example:▷Sporty driving.▷Break-in the engine.▷Idling of the engine.▷Usage of non-approved engine oil grades.
Therefore, regularly check the engine oil level
after refueling.
The vehicle is equipped with electronic oil
measurement.
The electronic oil measurement has two meas‐
uring principles:
▷Status display▷Detailed measurement
Electronic oil measurement
Status display
The concept
The engine oil level is monitored electronically
while driving and shown on the Control Dis‐
play.
If the engine oil level reaches the minimum
level, a check control message is displayed.
Requirements
A current measured value is available after ap‐
prox. 30 minutes of driving. During a shorter
trip, the status of the last, sufficiently long trip
is displayed.
With frequent short-distance trips, regularly
perform a detailed measurement.
Displaying the engine oil level1."Vehicle info"2."Vehicle status"3. "Engine oil level"
Engine oil level display messages
Different messages appear on the display de‐
pending on the engine oil level. Pay attention
to these messages.
If the engine oil level is too low, within the next
125 miles/200 km Add engine oil, refer to
page 190.
Engine oil level too low
Add engine oil immediately; otherwise,
an insufficient amount of engine oil could re‐
sult in engine damage.◀
Take care not to add too much engine oil. Too much engine oil
Have the vehicle checked immediately;
otherwise, surplus engine oil can lead to en‐
gine damage.◀
Detailed measurement
The concept In the detailed measurement the engine oil
level is checked and displayed via a scale.
Seite 189Engine oilMobility189
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Everything from A to Z
IndexA ABS, Antilock Brake Sys‐ tem 117
Acceleration Assistant, refer to Launch Control 78
Accessories and parts 7
Activated-charcoal filter 140
Adaptive brake lights, refer to Brake force display 116
Adaptive Light Control 95
Additives, oil 190
Adjustments, seats/head re‐ straints 54
After washing vehicle 211
Airbags 99
Airbags, indicator/warning light 100
Air circulation, refer to Recir‐ culated-air mode 137, 139
Air, dehumidifying, refer to Cooling function 136, 139
Air distribution, manual 136, 140
Air flow, air conditioner 136
Air flow, automatic climate control 140
Air pressure, tires 174
Air vents, refer to Ventila‐ tion 141
Alarm system 44
Alarm, unintentional 45
All around the center con‐ sole 16
All around the roofliner 17
All around the steering wheel 14
All-season tires, refer to Win‐ ter tires 181
All-wheel-drive 118 Alternating-code hand-held
transmitter 144
Alternative oil types 191
Ambient light 98
Antifreeze, washer fluid 74
Antilock Brake System, ABS 117
Anti-slip control, refer to DSC 117
Approved axle load 218
Approved engine oils, see Suitable engine oil
types 191
Arrival time 90
Ash tray 147
Assistance when driving off 121
Attentiveness assistant 116
AUTO intensity 139
Automatic car wash 210
Automatic climate con‐ trol 135
Automatic Curb Monitor 61
Automatic deactivation, front- seat passenger airbags 101
Automatic headlight con‐ trol 95
Automatic locking 44
Automatic recirculated-air control 139
Automatic transmission, see Steptronic transmission 75
AUTO program, automatic cli‐ mate control 139
AUTO program, climate con‐ trol 136
AUTO program, intensity 139
Auto Start/Stop function 69
Average fuel consumption 90
Average speed 90
Axle loads, weights 218 B
Backrest curvature, refer to Lumbar support 56
Backrest, width 56
Band-aids, refer to First aid kit 205
Bar for tow-starting/ towing 208
Battery replacement, vehicle battery 202
Battery replacement, vehicle remote control 35
Battery, vehicle 202
Belts, safety belts 58
Beverage holder, cu‐ pholder 153
BMW Assist, see user's manual for Navigation, En‐
tertainment and Communi‐
cation
BMW Driver’s Guide App 6
BMW Homepage 6
BMW Internet page 6
BMW maintenance sys‐ tem 193
Bonus range, ECO PRO 163
Bottle holder, refer to Cu‐ pholder 153
Brake assistant 117
Brake discs, break-in 156
Brake force display 116
Brake lights, adaptive 116
Brake lights, brake force dis‐ play 116
Brake pads, break-in 156
Braking, hints 157
Breakdown assistance 204
Break-in 156
Brightness of Control Dis‐ play 92 Seite 220ReferenceEverything from A to Z220
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Cooling function 136, 139
Cooling, maximum 139
Cooling system 192
Cornering light 95
Corrosion on brake discs 158
Cosmetic mirror 147
Courtesy lamps during un‐ locking 37
Courtesy lamps with the vehi‐ cle locked 38
Cruise control 123
Cruising range 85
Cupholder 153
Current fuel consumption 85
D
Damage, tires 180
Damping control, dy‐ namic 119
Data, technical 218
Date 85
Daytime running lights 95
Daytime running lights, bulb replacement 198
Defrosting, refer to defrosting the windows 136
Defrosting, refer to Windows, defrosting 140
Defrosting the windows 136
Dehumidifying, air 136, 139
Deleting personal data 25
Deletion of personal data 25
Destination distance 90
Digital clock 85
Digital compass 145
Dimensions 218
Dimmable exterior mirrors 62
Dimmable interior rearview mirror 62
Direction indicator, refer to Turn signals 71
Display, electronic, instru‐ ment cluster 80
Display lighting, refer to In‐ strument lighting 97 Displays, cleaning 214
Disposal, coolant 192
Disposal, vehicle battery 202
Distance control, refer to PDC 125
Distance to destination 90
Divided screen view, split screen 23
Door lock 39
Door lock, refer to Remote control 34
Drive-off assistant 121
Drive-off assistant, refer to DSC 117
Driver assistance, refer to In‐ telligent Safety 108
Driving Assistant, refer to In‐ telligent Safety 108
Driving Dynamics Con‐ trol 119
Driving instructions, break- in 156
Driving mode 119
Driving notes, general 156
Driving stability control sys‐ tems 117
Driving style analysis 166
Driving tips 156
DSC Dynamic Stability Con‐ trol 117
DTC Dynamic Traction Con‐ trol 118
Dynamic Damping Con‐ trol 119
Dynamic Stability Control DSC 117
Dynamic Traction Control DTC 118
E
ECO PRO 162
ECO PRO, bonus range 163
ECO PRO display 162
ECO PRO driving mode 162 ECO PRO driving style analy‐
sis 166
ECO PRO mode 162
ECO PRO Tip - driving in‐ struction 164
EfficientDynamics 165
Electronic displays, instru‐ ment cluster 80
Electronic oil measure‐ ment 189
Electronic Stability Program ESP, refer to DSC 117
Emergency detection, remote control 35
Emergency operation, convertible top 49
Emergency release, fuel filler flap 170
Emergency Request 204
Emergency start function, en‐ gine start 35
Emergency unlocking, trans‐ mission lock 78
Emergency unlocking, trunk lid 41
Energy Control 85
Energy recovery 86
Engine, automatic Start/Stop function 69
Engine, automatic switch- off 69
Engine compartment 187
Engine compartment, work‐ ing in 188
Engine coolant 192
Engine idling when driving, coasting 165
Engine oil 189
Engine oil, adding 190
Engine oil additives 190
Engine oil change 191
Engine oil filler neck 190
Engine oil types, alterna‐ tive 191
Engine oil types, ap‐ proved 191 Seite 222ReferenceEverything from A to Z222
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Engine start during malfunc‐tion 35
Engine start, jump-start‐ ing 205
Engine start, refer to Starting the engine 68
Engine stop 68
Entering a car wash 210
Equipment, interior 143
Error displays, see Check Control 81
ESP Electronic Stability Pro‐ gram, refer to DSC 117
Exchanging wheels/tires 180
Exhaust system 157
Exterior mirror, automatic dimming feature 62
Exterior mirrors 61
External start 205
External temperature dis‐ play 85
External temperature warn‐ ing 85
Eyes for securing cargo 160
F
Failure message, see Check Control 81
False alarm, refer to Uninten‐ tional alarm 45
Fan, refer to Air flow 136, 140
Filler neck for engine oil 190
Fine wood, care 213
First aid kit 205
Fitting for towing, see Tow fit‐ ting 208
Flat tire, changing wheels 201
Flat Tire Monitor FTM 107
Flat tire, Tire Pressure Moni‐ tor TPM 103
Flat tire, warning lamp 104, 107
Flooding 157 Floor carpet, care 213
Floor mats, care 213
Fogged up windows 136
Fold down the rear seat back‐ rest, see Though-loading
system 149
Fold-out position, wiper 74
Foot brake 157
Front airbags 99
Front-end collision warning with City Braking func‐
tion 109
Front fog lights 97
Front fog lights, front, bulb re‐ placement 199
Front lights 196
front-seat passenger airbags, automatic deactivation 101
Front-seat passenger airbags, indicator lamp 101
FTM Flat Tire Monitor 107
Fuel 172
Fuel consumption, refer to Average fuel consump‐
tion 90
Fuel filler flap 170
Fuel gauge 84
Fuel lid 170
Fuel quality 172
Fuel recommendation 172
Fuel, tank capacity 219
Fuse 203
G
Garage door opener, refer to Universal Integrated Remote
Control 143
Gasoline 172
Gear change, Steptronic transmission 76
Gear shift indicator 87
General driving notes 156
Glare shield 147
Glove compartment 151 Gross vehicle weight, ap‐
proved 218
H
Halogen headlights, bulb re‐ placement 196
Handbrake, refer to parking brake 71
Hand-held transmitter, alter‐ nating code 144
Hazard warning flashers 204
Headlight control, auto‐ matic 95
Headlight courtesy delay fea‐ ture 95
Headlight flasher 72
Headlight flasher, bulb re‐ placement 198
Headlight glass 196
Headlights 196
Headlights, care 211
Headlight washer system 72
Head restraints 54
Head restraints, front 59
Head restraints, rear 59
Heavy cargo, stowing 160
High-beam Assistant 96
High beams 72
High beams/low beams, refer to High-beam Assistant 96
High beams, bulb replace‐ ment 198
Hills 158
Hill start assistant, refer to Drive-off assistant 121
Hints 6
Holder for beverages 153
Homepage 6
Hood 188
Horn 14
Hotel function, trunk lid 41
Hot exhaust system 157
Hydroplaning 157 Seite 223Everything from A to ZReference223
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