Maintenance And Care; Checking And Filling; Fuel - Audi A4 2023 Owner's Manual

Checking and Filling
Checking and Filling
Fuel
Types of gasoline
The correct gasoline grade is stated on the inside
of the fuel filler door.
The vehicle is equipped with a catalytic converter
and must only be driven with unleaded gasoline.
Audi recommends using TOP TIER Detergent Gas-
oline. For additional information on TOP TIER De-
tergent Gasoline, visit www.toptiergas.com.
The individual gasoline grades are differentiated
by octane ratings. This value is given with
(R+M)/2 equating to AKI or in RON.
The headings below match the sticker in the fuel
filler door (examples):
UNLEADED FUEL ONLY MIN. (R+M)/2 87
Regular / MIN. RON 91 Regular
Use regular gasoline with minimum 87 AKI /
91 RON.
Audi recommends using premium gasoline with
minimum 91 AKI / 95 RON to achieve the rated
horsepower and torque.
UNLEADED FUEL ONLY PREMIUM MIN.
(R+M)/2 91 / SUPER MIN. RON 95.
Using premium gasoline with minimum 91 AKI/
95 RON is recommended.
If premium gasoline is not available, you can also
use regular gasoline 87 AKI / 91 RON. However
this does reduce the engine power slightly.
UNLEADED FUEL ONLY PREMIUM MIN.
(R+M)/2 93 / SUPER PLUS MIN. RON 98
Using premium plus gasoline with at least 93,
AKI/ 98 RON is recommended.
If no premium plus gasoline is available, you can
also use premium gasoline with 91 AKI / 95 RON.
However this does reduce the engine power
slightly.
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— Filling the tank just one time with leaded
fuel or other metallic additives will cause
permanent deterioration to the catalytic
converter function.
— When gasoline with an octane rating that is
too low is used, high speeds or heavy engine
load can lead to engine damage.
The vehicle may be filled with fuel that has a
higher octane rating than what is required by
the engine.
Gasoline with alcohol (ethanol)
You can fuel your vehicle with unleaded gasoline
that has an ethanol content of up to 15%, for ex-
ample "E15".
Gasoline adapted to the season
Many gasoline fuels are adapted to the seasons.
When the season changes, refueling at high-traf-
fic gas stations is recommended. It is more likely
that the gasoline will be suitable for the season
there.
— Do not use gasoline that does not meet the
specifications.
~Ethanol fuels with a high ethanol percent-
age, such as E30 - E100, must not be used.
The fuel system will be damaged!
— Methanol fuels with a high methanol per-
centage, such as MS - M100, must not be
used. The fuel system and the engine will be
damaged!
~ Ifyou are unable to find out if a specific gas-
oline mixture meets the specifications, ask
the gas station operator or their fuel suppli-
er.
—Do not use any gasoline mixture whose
composition cannot be identified.
— Audi does not assume any responsibility for
damage to the fuel system or for perform-
ance problems caused by using gasoline
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