fuel consumption BMW 750IL SEDAN 1998 Owners Manual

25n
RepairsIndexOverview Controls Car care Technology Data
Refueling Fuel specifications
Before filling the tank, shut off the
engine. If you do not, fuel cannot
flow into the tank and the "Check En-
gine" warning lamp may come on.<
To open the fuel filler door, press
against its forward edge.
To unlock the fuel filler door if there is a
malfunction of the central locking sys-
tem, refer to page 178.
When handling fuels, comply with
all of the applicable safety precau-
tions and regulations pertaining to fuels.
Never carry spare fuel containers in
your vehicle. Whether empty or full,
these containers can leak, cause an ex-
plosion, or lead to fire in the event of a
collision.<
384de011
Open the filler cap carefully to
prevent fuel from spraying out.
Fuel spray may cause injury.
Do not top off. Topping off may cause
fuel spillage.<
Keep the filler cap in the bracket at-
tached to the fuel filler door.
When refueling, insert the filler nozzle
completely into the filler pipe. Pulling
the nozzle out of the pipe during refuel-
ing
>results in premature pump shutoff
>and will reduce the effect of the
recovery vapor system on the pump.
Close the fuel cap carefully after
refueling. A loose or missing cap
will activate the "Check Engine“ lamp.<
380de633
Use unleaded gasoline only.
Minimum octane requirement: 91 AKI.
BMW engines are equipped with knock
sensors and will adapt automatically
to different octane ratings, provided
that the minimum octane requirement
(87 AKI) is met.
Fuels with higher octane ratings will
provide enhanced performance and
lower fuel consumption, while the use
of fuels with lower octane ratings will
have the opposite effect.
Do not use leaded fuels. The use
of leaded fuels will cause perma-
nent damage to the system's oxygen
sensor and the catalytic convertor.<
AKI = Anti Knock Index

73n
RepairsIndexOverview Controls Car care Technology Data
Energy control Fuel gaugeIndicates current fuel consumption in
mpg (in liters per 100 km on Canadian
vehicles). This instrument clearly
shows whether your current driving
style is conducive to economy and min-
imum exhaust emissions.
When the vehicle is stationary, the dis-
play goes to "Maximum" (zero on Cana-
dian models).380us005
When you switch on the ignition, the in-
dicator lamp comes on briefly to con-
firm that the system is operational.
If the indicator lamp stays on, there are
approx.
>BMW 740i/L 2.6 gallons (10 liters)
>BMW 750iL 3.2 gallons (12 liters)
remaining in the tank.
Tank capacity: Refer to page 197.
Certain operating conditions (such as
those encountered in mountainous ar-
eas) may cause the needle to fluctuate
slightly.380us006
Please refuel early, since driving
to the last drop of fuel can result in
damage to the engine and/or catalytic
converter.<

85n
RepairsIndexOverview Controls Car care Technology Data
Onboard computerAverage fuel consumptionThe computer can calculate average
fuel consumption rates for two different
distances at the same time (simulta-
neous data for an entire journey and for
a single segment of it, for instance).
To start calculations for distance 1:
Press the keys in the sequence shown
in the diagram.
To start calculations for distance 2:
The procedure is the same as that for
the first distance, except you will press
CONSUM 2 for your selection.
The computer starts calculating fuel
consumption as soon as you start driv-
ing.
Data request:
Press the BC key and CONSUM 1 or 2.380us189
Estimated cruising rangeDisplays the estimated travel range
available with the remaining fuel. The
system calculates the cruising range
based on operating conditions and the
amount of fuel remaining in the tank.
The computer uses the average rate of
fuel consumption over the preceding
18 miles (30 kilometers) as a reference.
Data request:
Press the keys in the sequence shown
in the illustration.
A range of under 31 miles (50 kilome-
ters) is displayed in the Check Control
in the instrument cluster.380us180
Please respond to this warning by refu-
eling at once to avoid serious damage
to the engine and catalytic converter.
When you refuel, the onboard computer
registers the additional fuel only when
more than 1.5 gallons (5 liters) are
added.

119n
RepairsIndexOverview Controls Car care Technology Data
Roof-mounted luggage rack
*
Secure the roof luggage correctly and
tightly to prevent it from shifting or be-
ing lost during driving (danger to follow-
ing traffic).
Drive smoothly: Avoid sudden accelera-
tion and braking maneuvers, corner
gently.
The roof load increases aerodynamic
resistance: Increased fuel consumption
and additional stresses on the vehicle's
body result from this.

143n
RepairsIndexOverview Controls Car care Technology Data
Engine oilChecking the engine oil1 Park the vehicle on a level surface
2 Shut the engine off after it has
reached normal operating tempera-
ture
3 After approx. 5 minutes, pull the dip-
stick out and wipe it off with a clean
lint-free cloth, paper towel, or similar
material
4 Push the dipstick all the way into the
guide tube and pull it out again
5 The oil level should be in between the
two graduations on the dipstick.
As with fuel economy, oil consumption
is directly influenced by your driving
style and vehicle operating conditions.380de076
The oil volume between the two marks
on the dipstick corresponds to approx.
1.1 US quarts (1 liter). Do not fill to be-
yond the upper mark on the dipstick.
Excess oil will damage the engine.460de189
Adding engine oilWait until the level has dropped to just
above the lower mark before adding oil.
However, do not wait until the oil drops
below the lower mark.
BMW engines are designed to op-
erate without oil additives. The
use of additives could lead to damage
in some cases. This is also true for the
automatic transmission, the differential
and the power steering system.< 380de077

Everything from A to ZAABS125
Accessories6
Activated-charcoal filter105
Active seat48
Adaptive Transmission
Control (ATC)63
Adding engine oil143
Adding washer fluid142
Adjust the backrest46
Adjusting steering wheel49
Air distribution102
Air flow103
Air jets100
Air pressure132
Airbags55
Alarm system40
Deactivating in an
emergency41
Antenna diversity186
Antifreeze146
Antifreeze, radiator128, 146
Antilock Brake System
(ABS)125
Anti-theft alarm system
32,40
Approved gross vehicle
weight196
Aquaplaning123,132
Armrest111
ASC+T (Automatic Stability
Control plus Traction)92Ashtray114
AUC (Automatic recirculated-
air control)103
Audio System78
Automatic car washes150
Automatic climate
control100
Automatic climate control,
removing window
condensation102
Automatic recirculated-air
control (AUC)103
Automatic Soft-Close
feature38
Automatic Stability Control
plus Traction (ASC+T)92
Automatic steering wheel
adjustment49
Automatic transmission62
Automatic transmission with
Steptronic65
Automatic windshield
washer69
Average fuel consumption 85
Average speed86
Axle loads196
BBackup lamps, bulb
replacement166
Battery173,198
Battery capacity198Battery change, radio remote
control168
Battery charge current20
Battery, discharged179
Battery, removal and
installation175
Belts54
Beverage holders113
Blower103
Body-cavity protectant151
Brake faults128
Brake fluid147
Brake hydraulic system20
Brake lamps, bulb
replacement166
Brakes126
Break-in procedure122
Break-resistant security
glass, care153
Bulb replacement163
CCar jack170
Car Memory53
Car radio reception131, 186
Car telephone113
Car wash150
Care, exterior152
Care, interior154
Caring for the vehicle
finish152
Caring for your car150Catalytic converter124
Cellular phone131
Center (high-mount) brake
lamp166
Central locking system32
Central locking system,
button36
Changing a wheel170
Charge indicator lamp20
Charging the battery174
Check Control75
CHECK key75
Checking the engine oil143
Checking tire pressure26
Child restraints57
Childproof door locks58
Cigarette lighter115
Clock,
refer to Digital clock79
Code88
Refer to the Radio Owner's
Manuel
Codes, tires134
Coin tray113
Cold start60
Comfort seats47
Connecting a car vacuum
cleaner115
Consumption display73
Contour seat48

RepairsIndexOverview Controls Car care Technology Data
Everything from A to Z
203n
Convenience operating mode
for windows and sliding/tilt
roof32
Convenience operating mode
for windows and sliding/tilt
sunroof33
Convenience starting59
Coolant146
Coolant temperature
gauge74
Coolant, antifreeze128
Cooling system, capacity 197
Cruise control70
Cruising range85
DDaytime-driving light
switch96
DBC (Dynamic Brake
Control)127
Defrosting, windows102
Digital clock79
Digital sound processor187
Dimensions195
Dimming feature, interior
rearview mirror50
Dipstick, engine oil143
Disc brakes126
Disconnect the battery175
Displacement194
Displays18
Distance86Distance warning90
Door key30
Door warning lamps, bulb
replacement167
Doors, emergency release 32
Doors, radio remote
control33
Drink holders113
Drive belts198
Driving notes123
DSC (Dynamic Stability
Control)92
Dynamic Brake Control
(DBC)127
Dynamic Stability Control
(DSC)92
EEDC (Electronic Damper
Control)93
Electric power windows42
Electric rear seat
adjustment48
Electric steering wheel
adjustment49
Electrical accessories,
failure176
Electrical system198
Electronic Damper Control
(EDC)93
Electronic immobilizer31Emergency deactivation of
the alarm system41
Emergency release
doors32
fuel filler door178
luggage compartment
lid37
sliding/tilt sunroof178
Energy Control73
Engine coolant146
Engine data194
Engine oil consumption143
Engine oil pressure20
Engine oil specifications144
Estimated time of arrival87
Exterior door handles,
lighted33
Exterior finish, care151, 152
FFailure messages75
First-aid kit24
Fittings for tow-starting
and towing180
Flashlight111
Flat tires132
Fluid, power steering148
Fog lamps97
bulb replacement165
switch97
Footwell lamps98Footwell lamps, bulb
replacement167
For wheelslip control, refer
to ASC+T/DSC92
Front armrest112
Front seat adjustment46
Fuel25
Fuel consumption
indicator73
Fuel filler door25
Fuel filler door,
manual release after
electrical fault178
Fuel gauge73
Fuel specifications25
Fuel tank capacity197
Fuel, average fuel
consumption85
Fuses176
GGasoline25
Glove compartment110
Glove compartment lamp,
bulb replacement167
Gross vehicle weight196HHand brake, refer to Parking
brake61
Handsfree system113
Hazard warning triangle24

RepairsIndexOverview Controls Car care Technology Data
Everything from A to Z
205n
Oil consumption143
Oil level check143
Oil pressure,
indicator lamp20
Oil specifications144
Oil, Engine oil
Capacities197
OILSERVICE74
Onboard computer84
Onboard tool kit162
Opening the luggage
compartment from the
inside38
Outside mirrors50
Outside temperature
display72
PPaint blemishes,
exterior dirt152
Park Distance Control
(PDC)90
Parking aid90
Parking brake61
Parking in winter130
PDC (Park Distance
Control)90
Playing cassettes
Refer to the
Radio Owner's ManuelPlaying CDs
Refer to the
Radio Owner's Manuel
Pocket light111
Power seat adjustment46
Power steering130
Power steering fluid148
Power windows42
Pressure, tires26,132
Pushbutton for central
locking system36
RRadio
Car radio
Refer to the separate
Owner's Manuel
Radio reception131,186
Radio remote control33
Radio remote control,
battery change168
Radio remote control,
new transmitter168
Rain sensor68,150
RDC (Tire Pressure
Control)94
Reading lamps98
Rear passenger-area air
conditioning105
Rear seat adjustment,
electric48
Rear seat heating106Rear window blind107
Rear window defroster70
Rear-seat control
Front passenger's seat 112
Onboard computer112
Radio112
Rear window blind112
Telephone112
Rearview mirrors50
Refueling25
Remote control for onboard
computer89
Removing condensation,
windows102
Replacement keys30
Replacing tires133
Residual heat104
Roof luggage rack118
Roof weight rating196
Rubber seals and
components154
SSafety belt tensioner187
Safety belts54
Safety lock buttons36
Screw-on valve stem
caps134
Seat adjustment46
Seat heating106
Seat memory51
Seat, power46Securing cargo118
Selector lever, automatic
transmission62,65
Service and Warranty
Information Booklet149
Service Interval Display
74,149
Servotronic130
Shoulder support47
Shutting off the engine60
Ski bag116
Skid control130
Sliding/Tilt sunroof44
Sliding/Tilt sunroof with glass
moonroof45
Sliding/Tilt sunroof, closing
after electrical fault178
Sliding/Tilt sunroof,
convenience operating
mode32
Sliding/Tilt sunroof, radio
remote control33
Slippery roads129
Snow chains129,135
Socket115
Spare key30
Spare tire171
Spark plugs198
Speaker113
Special oils144
Speed limit warning87
Speedometer19