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Fuel supply
and fill ing
your f u el tank
Gasoline
Fuel supply
Using the right fuel helps keep the environ-
ment clean and prevents engine damage.
Fuel recommendation
The fuel recommended for you r vehicle is
un-
leaded premium
grade gasolin e. See also
¢ page 225, Data .
Audi recommends using
TOP TI ER Det ergent Gasoli ne wi t h a minim um
oct ane rati ng of 9 1 AKI (9 5 RON). For more
inf ormation on TOP TI ER Det ergent Gasoli ne,
please go to the official website
(www .toptiergas .com) .
The recommended gasoline octane rating for
your engine can also be f ound on a label locat-
ed on the inside of the fuel filler flap . This rat -
ing may be specif ied as AKI or RON.
Your veh icle may also be operated using un-
leaded regular gasoline with a minimum oc-
tane rating of 87 AKI/91 RON. However, using
87 AKI/9 1 RON octa ne fue l w ill sli ghtly re-
duce eng ine perfo rmance .
Use unleaded gasoline only.
Unleaded gaso-
line is available th rougho ut the USA, Canada,
and in most European countries . We recom -
mend that you do not ta ke your vehicle to
areas or count ries where unleaded gasoline
may not be available.
For mo re informat ion on refue li ng your vehi-
cle, see
¢ page 168.
Octane rating
Octane rati ng indicates a gasoli ne's abili ty to
resist engine damaging "knoc k" caused by
premature ign ition and detonation. Therefore,
buying the correct grade of gasoli ne is very
important to help prevent possible engine
damage and a loss of engine performance.
Gasoline most common ly used in the Unite d
States and Canada has the followin g octane
Fuel supply
and filling
your fuel tank
167
rat ings that can usually be found on the fi ll er
pump :
- Premium Grade: 9 1 - 96 AKI
- Regular Grade: 87 - 90 AKI
Explanation of the abbreviations:
AKI = Ant i Knock I ndex = (R+M)/2 = (RON
+MON)/2
RON= Research Oct ane Num ber
MON = Motor Octane Number.
(D
Note
- Do not use any fue l w it h octane rat ings
lower than 87 AKI or 9 1 RON othe rwise
expensive engi ne damage w ill occur.
- Do
not
use leaded gasoli ne! The use of
leaded gasolin e w ill severely damage
your vehicl e's catalytic converter and its
ability to control exhaust em issions.
Blended gasoline
Use of gasoline containing alcohol or
MTBE (methyl tertiary butyl ether)
You may use unleaded gasoline blende d with
alcohol or MTBE (commonly ref erred to as
oxygenates) if the blende d mixture meets the
fo ll ow ing criteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol)
- Anti -kno ck index must be 87 AKI or higher.
- Blend must contain no mor e than 3% meth-
anol.
- Blend must contain more t han 2% co-sol-
vents .
Blend of gasoline and ethanol (grain alcohol
or ethyl alcohol)
- Anti -knock index must be 87 AKI or higher.
- Blend must not conta in mo re tha n 10%
ethanol.
Blend of gasoline and MTBE
- Anti -knock index must be 87 AKI or higher.
ll>-
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