Fuel Supply And Filling Your Fueltank; Gasoline - Audi A7 Sportback 2015 Owner's Manual

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Fuel supply and fill ing
your f u el tank
Gasoline
Fuel supply
Appl ies to vehicles: with gasoline engin e
Using t he right fuel helps keep the environ -
men t clean and preven ts engine damage.
Fuel recommendation
The fuel recomme nded fo r your vehicle is un-
leaded premium grade gasolin e. Audi recom-
mends using TOP TIER Dete rgent Gasoli ne
wit h a mi nimum octane rat ing of 9 1 AKI (9 5
RON). For more inform at ion on TOP TIER De-
t ergent Gasoline, please go to t he off icial
websit e (www .toptie rgas.com) .
The recommended gasoline octane rating for
your engine can also be f ound on a label locat-
ed on t he inside of the f uel f iller flap . This rat-
ing may be specified as AKI or RON.
Your veh icle may also be operated using un-
leaded regular gasoline with a min imum oc-
tane rating of 87 AKI/91 RON. However, using
87 AKI/ 9 1 RON octa ne fue l w ill sli ght ly re-
duce eng ine perfo rmance .
Use unleaded gasoline only. Unleaded gaso-
line is available t hrougho ut t he USA, Canada,
and in most European countries . We recom-
mend that you do not ta ke your vehicle to
areas or countries where unleaded gasoline
may not be available.
For mo re informat ion on refue lin g your vehi-
cle, see
q page 219.
Octane rating
Octane rating ind icates a gasoli ne's ability to
resist engine damag ing "kno ck" caused by
premature ign ition and detona t ion. Theref ore,
buying the correct grade of gasolin e is very
importa nt to help prevent possible engine
damage and a loss of engine performance.
Gasoline most common ly used in t he Unite d
States and Canada has the following octane
Fuel supply and filling your fuel tank 217
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 .
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Note
- Do not use any fue l w ith octane rat ings
lower than 87 AKI or 9 1 RON othe rwise
expensive engi ne damage w ill occur.
- Do not use leaded gasoline . The use of
leaded gasoline w ill severely damage
your vehicl e's catalytic converter and its
abi lity to control exhaust em issions.
Blended gasoline
Applies to vehicles: with gasoline engine
Use of gasoline containing alcohol or
MTBE (methyl tertiary butyl ether)
You may use unleaded gasoline blen ded wit h
alcohol or MTBE (commonly referred to as
oxygenates) if the blende d mixture meets the
f oll ow ing criteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol)
- Anti -knock 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 15%
ethanol.
Blend of gasoline and MTBE
- Anti-knock index must be 87 AKI or high er. ..,.
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