170 Fuel supply and filli ng your fuel tank
Fuel supply and filling
your fuel tank
Gasoline
Fuel supply
Using the right fuel helps keep the environ
ment clean and prevents engine damage .
Fuel re co mm endation
The fuel recommended for your vehicle is un
lead ed pr emium
grade gasoline . See also
¢ page 228, Data . Audi recommends using
TOP TIER Detergent Gasol ine with a minimum
octane rating of 91 AK I (95 RON). For more
information on TOP TI ER Detergent Gasoline,
p lease go to the officia l website (www.toptier
gas.com).
The recommended gasoline octane rating for
your engine can a lso be found on a label locat
ed on the inside of the fuel filler 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 minimum oc
tane rating of 87 AKI/91 RON . However, using
87 AKI/91 RON octane fuel wi ll slightly re
duce engine performance.
U se unl ead ed gasolin e onl y. Unleaded gaso
line is available throughout the USA, Canada ,
and in most European countries . We recom
mend that you do not take your vehicle to
areas or countries where unleaded gasoline may not be available.
F or more informat ion on refue ling your vehi
cle, see
¢ page 171.
Octane rat ing
Octane rating ind icates a gasoline's ability to
resist engine damaging "knock" caused by
premature ign ition and detonation. Therefore,
buying the correct grade of gasoline is very
important to help prevent possible engine
damage and a loss of engine performance.
Gasoline most commonly used in the United
States and Canada has the following octane ratings that can usually be found on the fi
ller
pump:
- Premium Grade: 91 -96 AKI
- Regular Grade: 87 - 90 AKI Explanation of the abbreviations:
AKI = Anti Knock Index = (R+M)/2 = (RON
+ MON)/2
RON= Research Octane Number
MON = Motor Octane Number .
(D Note
-Do not use any fuel w ith octane rat ings
lower than 87 AKI or 91 RON otherwise
expensive engine damage w ill occur.
- Do
not use leaded gasoline! The use of
leaded gasoline w ill severely damage
your vehicle's catalytic converter and its
ability to control exhaust emissions .
Blended gasoline
Use of gaso line co ntainin g alc ohol or
MTBE (m ethyl tertia ry butyl eth er)
You may use unleaded gasoline blended with
alcohol or MTBE (commonly referred to as
oxygenates) if the blended mixture meets the
fo llowing criteria:
Blend of gaso line m ethanol (wood alc ohol or
methyl alcohol )
-Anti -knoc k index must be 87 A KI or h igher.
- Blend must contain no more than 3% meth-
anol.
- Blend must contain more than 2% co-sol-
vents .
Blend of g asoline and etha nol (gra in alcohol
or eth yl alcohol )
-Anti -knock index must be 87 AKI or higher .
- Blend must not contain more than 10% ethanol.
Blend of g asoline a nd MTBE
-Anti-knock index must be 87 AKI or h igher . ll-
17 2 Fuel supply and filling your fuel t ank
transport fue l to use for yo ur lawn mower,
snow blower, etc., be very careful and al
ways observe local and state laws regard
ing the use, transportat ion and storage of
such fuel containers . Make certain the con
tainer meets industry standards (A NSI/
AS TM F852 - 86) .
(D Note
Never d rive yo ur vehicle unti l the fuel ta nk
is completely d ry. The irreg ular s upply of
fuel can ca use misfir ing. Gasoline cou ld
e nte r into t he exhaust system and damage
t he cata lytic conve rter.
Refueling
F ig . 135 D rive r's doo r: U nlo cki ng fuel f iller flap
Fig. 136 Fu el cap hooke d on th e opened fuel filler flap
When adding fue l, the ignition and any ce llu
lar phones in the vehicle must be sw itched
off .
Tak ing the fuel cap off
• To open the fuel filler flap, press the button
r:> fig. 135.
• Unscrew fuel filler cap counter-clockwise
and hang it on the fuel filter flap ¢
fig. 136 .
Refueling procedure
• Insert the fuel no zzle from the gasoline
pump into the fuel fi ller neck as far as it wi ll
go .
• Select a med ium refue ling rate so that the
no zz le sw itches off automatically when the
tank is full.
Putting the fuel cap back on
• After f illing your tank, twist the fuel filter
cap clockw ise until you hear a definite click.
• Close the fue l filler flap.
T o avoid fuel s pill ing or evaporating from the
fuel tank always close fuel filter cap properly and completely . An improperly closed fuel fi ll
er cap may also cause the MIL lamp¢
page 21
to come on.
A WARNING
Imp roper refue ling or handling of fuel can
cause fire, e xplosion and severe burns.
- Fue l is highly flammable and can cause
severe burns and other injur ies .
- Fai lure to shut the e ngine off while refu
eling and/or to insert the pump nozzle
fu lly into the fuel filter neck could ca use
fue l to spray out of filler n eck or to ove r
f low. Fuel spray and overflowing fuel can
cause a fire.
- Never use a ce llu lar telephone whil e re
fue ling . Th e e lec tromag net ic radiat io n
can cause sp arks th at can igni te fuel v a
pors an d cause a fire.
- N ever get back in to yo ur vehicle whi le re
f u e ling.
If in excep tio nal cir cumstan ces
you mus t get b ack in your ve hicl e while
ref ueling, make ce rtain that you close
the door and touch metal to discharge
static electricity be fore touching the fill
er nozzle again . Static e lectr icity can
cause sparks t hat can ignite fuel vapors
re leased d uring refueling .
- Never smoke or have an open f lame any
where in o r near your ve hicle when refu
eling or fi lling a portable fue l conta iner .
