BMW SEDAN 3 Series 2023 Owner's Manual page 324

MOBILITY
NOTICE
Even small quantities of the wrong fuel or
wrong fuel additives can damage the fuel
system and engine. Furthermore, the cat-
alytic converter is permanently damaged.
There is a risk of damage to property, among
other potential damage. Do not refuel or add
the following in the case of gasoline engines:
▷ Leaded gasoline.
▷ Metallic additives, for instance manga-
nese or iron.
Do not press the Start/Stop button after refu-
eling with the wrong fuel. Contact an author-
ized service center or another qualified serv-
ice center or repair shop.
NOTICE
Fuel that does not comply with the minimum
quality can compromise engine function or
cause engine damage. There is a risk of
damage to property, among other potential
damage. Do not fill with fuel that does not
comply with the minimum quality.
Without ActiveFlex:
NOTICE
Incorrect fuels can damage the fuel system
and the engine. There is a risk of damage to
property, among other potential damage. Do
not use fuels with a higher ethanol content
than recommended. Do not refuel with fuels
containing methanol, e.g. M5 to M100.
Recommended gas quality
BMW recommends AKI 91.
M Performance model:
BMW recommends AKI 93.
324
Operating materials
Online Edition for Part no. 01405A5F6E0 - VI/22
Minimum fuel grade
BMW recommends AKI 87.
If you use gasoline with this minimum AKI Rat-
ing, the engine may produce knocking sounds
when starting at high external temperatures.
This has no effect on the engine life.
Engine oil
General information
The engine oil consumption and engine oil
properties depend on the driving style and op-
erating conditions.
Therefore, regularly check the engine oil level
after refueling by taking a detailed measure-
ment.
The engine oil consumption can increase in
the following situations, for instance:
▷ Sporty driving style.
▷ Break-in of the engine.
▷ Idle operation of the engine.
▷ With use of engine oil types that are classi-
fied as not suitable.
Different Check Control messages are shown
on the control display depending on the engine
oil level and engine oil properties.
The vehicle manufacturer recommends that
you have an authorized service center or an-
other qualified service center or repair shop
change the engine oil.