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Checking and Filling
Fuel
Gasoline grade
Applies to: vehicles with gasoline engines
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. Additiona l information on TOP TIER Deter-
gent Gasoline can be found on the official web-
site (www.topt iergas.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 following headings match the corresponding
sticker in the fuel filler door.
UNLEADED FUEL ONLY MIN. (R+M)/2 87
Regular/ MIN. RON 91 Regular
Use regular gasoline with minimum 87 AKI/
91 RON
i::>(@.
The maximum engine power is only reached if
premium gasol ine 91 AKI/ 95 RON is used.
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.
({D) Note
- 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 eng ine
load can lead to eng ine damage.
Checking and Filling
(D Tips
The vehicle may be filled with fuel that has a
higher octane rating than what is required by
the engine .
Blended gasoline
Appli es to : vehicles with gasoli ne engi ne
Use of gasoline containing alcohol or MTBE
(methyl tertiary butyl ether)
You may use unleaded gasoline blended with al-
coho l or MTBE (commonly referred to as oxygen-
ates) if the blended mixture meets the following
criteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol)
- Anti-knock index must be 87 AKI or higher.
- Blend must contain no more than
3% metha-
nol.
- Blend must contain more than
2% co-solvents.
Blend of gasoline and ethanol (grain alcohol or
ethyl alcohol)
- Anti-knock index must be 87 AKI or higher.
- Blend must not conta in more than
15% etha-
nol.
Blend of gasoline and MTBE
- Anti-knock index must be 87 AKI or higher.
- Blend must not contain more than
15% MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform es-
pecially well for winter or summer driving. Dur-
ing seasonal change-over, we suggest that you
fill up at busy gas stat ions where the seasonal
adjustment is more likely to be made in time .
@ Note
- Methanol fuels which do not meet these re-
quirements may cause corrosion and dam-
age to plast ic and rubbe r components in the
fuel system.
- Do not use fuels that fa il to meet the speci-
fied criteria in this chapter. .,.
185
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