octane BMW I8 2014 I12 Owner's Manual
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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.
Fuel recommendation
Note General fuel quality
Even fuels that conform to the specifica‐
tions can be of low quality. This may cause en‐
gine problems, for instance poor engine start-
up behavior, poor handling and/or poor
performance. Switch gas stations or use a
brand name fuel with a higher octane rating.◀
Gasoline
For the best fuel efficiency, the gasoline
should be sulfur-free or very low in sulfur con‐
tent.
Fuels that are marked on the gas pump as con‐
taining metal must not be used.
Refuel only with unleaded gasoline with‐
out metallic additives.
Do not refuel with any leaded gasoline or gaso‐
line with metallic additives, e. g. manganese or
iron, as this can cause permanent damage to
the catalytic converter and other compo‐
nents.◀
Fuels with a maximum ethanol content of
25 %, i. e. E10 or E25, may be used for refuel‐
ing.
Ethanol should satisfy the following quality
standards:US: ASTM 4806–xx
CAN: CGSB-3.511–xx
xx: comply with the current standard in each
case.
Do not use a fuel with a higher percent‐
age of ethanol
Do not use a fuel with a higher ethanol per‐
centage than recommended or one with other
types of alcohol, e.g. M5 to M100; otherwise
this could damage the engine and fuel supply
system.◀
Recommended fuel grade BMW recommends AKI 93.
Minimum fuel grade
BMW recommends AKI 91.
Minimum fuel grade
Do not use any gasoline below the mini‐
mum fuel grade as this may impair engine per‐
formance.◀
If you use gasoline with this minimum AKI Rat‐
ing, the engine may produce knocking sounds
when starting at high outside temperatures.
This has no effect on the engine life.
Fuel quality
The use of poor-quality fuels may result
in harmful engine deposits or damage. Addi‐
tionally, problems relating to drivability, start‐
ing and stalling, especially under certain envi‐
ronmental conditions such as high ambient
temperature and high altitude, may occur.
If drivability problems are encountered, we rec‐
ommend switching to a high quality gasoline
brand and a higher octane grade — AKI num‐
ber — for a few tank fills. To avoid harmful en‐
gine deposits, it is highly recommended to
purchase gasoline from BP or Top Tier retail‐
ers.Seite 157FuelMobility157
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Page 211 of 216

Menu, EfficientDynamics 142
Menu in instrument clus‐ ter 83
Menus, operating, iDrive 18
Menus, refer to iDrive operat‐ ing concept 19
Messages, see Check Con‐ trol 76
Microfilter 123
Minimum tread, tires 162
Mirrors 51
Mobile communication devi‐ ces in the vehicle 136
Modifications, technical, refer to Safety 7
Moisture in headlight 172
Monitor, refer to Control Dis‐ play 18
Mounting of child restraint systems 54
Multifunction steering wheel, buttons 14
Multimedia 6
N
Navigation 6
Neck restraints, front, refer to Head restraints 51
Neutral cleaner, see wheel cleaner 182
New wheels and tires 163
O OBD Onboard Diagnosis 171
OBD, see OBD Onboard Di‐ agnosis 171
Obstacle marking, rearview camera 115
Octane rating, refer to Rec‐ ommended fuel grade 157
Odometer 80
Office 6
Oil 165
Oil, adding 167 Oil additives 167
Oil change 168
Oil change interval, service requirements 80
Oil filler neck 167
Oil types, alternative 168
Oil types, approved 167
Old batteries, disposal 174
Onboard monitor, refer to Control Display 18
Opening/closing via door lock 41
Opening and closing 36
Opening and closing, without remote control 41
Opening and closing, with re‐ mote control 39
Operating concept, iDrive 18
Operating readiness 58
Operating readiness off 59
Operating readiness on 58
Optional equipment, standard equipment 6
Outside air, refer to Auto‐ matic recirculated-air con‐
trol 121
Overheating of engine, refer to Coolant temperature 79
P Paint, vehicle 181
Park Distance Control PDC 111
Parked vehicle, condensa‐ tion 137
Parking aid, refer to PDC 111
Parking brake 63
Parking lights 89
Passenger side mirror, tilting downward 51
Pathway lines, rearview cam‐ era 115
PDC Park Distance Con‐ trol 111
Pedestrian protection 62 Pedestrian warning with city
braking function 102
Performance Control 107
Personal Profile 37
Personal Profile, exporting profiles 38
Pinch protection system, win‐ dows 47
Plastic, care 182
POWER, driving with com‐ bustion engine 62
Power failure 173
Power windows 47
Pressure, tire air pres‐ sure 159
Profile, refer to Personal Pro‐ file 37
Programmable memory but‐ tons, iDrive 23
Protective function, win‐ dows 47
Push-and-turn reel, refer to Controller 18
Q Quick charging cable, see Level 2 charging cable 147
R Radiator fluid 169
Radio 6
Radio-operated key, refer to Remote control 36
Radio ready state 58
Rain sensor 65
Rearview camera 113
Rearview mirror 51
Rear window defroster 123
Recirculated-air filter 123
Recirculated-air mode 121
Recommended fuel grade 157
Recommended tire brands 163 Seite 195Everything from A to ZReference195
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