Checking and Filling
Fuel
Gasoline grade
The correct gasoline grade is stated on the inside
of the fuel filler door.
The vehicle is equipped with a catalytic converte r
and must only be d riven w it h
unleaded gasoline.
Aud i recommends using TOP TIER Detergent Gas-
oline. Additiona l information on TOP TIER Deter -
gent Gasoline can be found on the offic ial web-
site (www .topt iergas.com).
The individ ua l gasoline grades a re differentiated
by
octane ratings. This value is given with (R+M)/
2 equating to AKI or in RON.
The fo llow ing headings ma t ch t he correspon d ing
sticker in the fue l filler door .
UNLEADED FUEL ONLY MIN. (R+M)/2 87
Regula r / MIN. RON 91 Regular
Use reg ula r gaso line wit h minim um 8 7 AKI /
91 RON ~0 .
The m aximum engine power is only reache d if
prem ium gaso line 91 AKI/ 95 RON is used .
UNLEADED FUEL ONLY PREMIUM MIN . (R
+M )/2 91 / SUPER MIN. RON 95
Using prem ium gaso line wit h minim um 91 AKI/
9 5 RON is recommende d .
If premium gasoline is not availab le, yo u can also
use reg ular gasoline 87 AKI / 91 RON. Howeve r
this does reduce t he engine powe r slight ly.
CD Note
- Filling the tank just one t ime with lead ed
fuel or ot her meta llic additives will cause
perm anen t de t er io rat ion to the ca t alyti c
conve rt er fu nct ion .
- W hen gas oline wit h an octa ne rat ing th at is
t oo low is used, high speed s or he avy eng ine
load can lea d t o eng ine da mage.
Checking and Filling
{!) Tips
The vehicle can be filled wit h fue l that has a
higher octane rating than w hat is requ ired by
the eng ine .
Blended gasoline
Use of gasoline containing alcohol or MTBE
(methyl tertiary butyl ether)
You may use unleaded gasoline blended with al-
cohol or MTBE (commonly referre d to as oxygen-
at es) if the blende d m ixt ure m eets the fo llow ing
crit eria :
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)
- Ant i-kno ck ind ex mus t be 87 AKI or hig her.
- Blend must not co nta in mo re than
15% etha-
nol.
Blend of gasoline and MTBE
- Anti-knoc k index must be 87 AKI or higher .
- Blend mus t contain no t mo re t han
15% MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to pe rform es-
pecially well for w inter or summer dr iving . Dur -
ing seasonal cha nge-ove r, we sugges t that yo u
fill up at busy gas stat ions where the seasonal
adjus t me nt is mo re like ly to be m ade in t ime .
CD Note
- Met ha nol fuels which do not meet these re-
quireme nts may cause cor rosion and dam-
age to p last ic and rubbe r co m pon en t s in t he
fue l sys t e m .
- Do not use f ue ls t ha t fa il to m eet the speci-
fie d cr ite ria in thi s chapte r. .,..
233
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