164 Fuel supply and filling 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 recommendation
The fuel recommended for your vehicle is un
lead ed premium
grade gasoline . See also
¢ page 217, Data. Audi recommends using
TOP TIER Detergent Gasoline 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 also 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
l eaded 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.
Use unleaded gasoline only. 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 information on refueling your vehi
cle, see
¢ page 165.
Octane rating
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 r
atings 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 ratings
lower than 87 AKI or 91 RON otherwise
expensive engine damage will 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 gasoline containing alcohol or
MTBE (methyl tertiary butyl ether)
You may use unleaded gasoline blended with
alcohol or MTBE (commonly referred to as
oxygenates) if the blended mixture meets the
following criteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol)
-Anti -knoc k index must be 87 A KI or higher.
- Blend must contain no more than 3% meth-
anol.
- Blend must contain more than 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 contain more than 10%
ethanol.
Blend of gasoline and MTBE
-Anti-knock index must be 87 AKI or higher. ll-
166 Fuel suppl y and filli ng your fuel t ank
transport fue l to use for your 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 (ANSI/
AS TM F852 -86).
(D Note
Never drive your vehicle until the fuel tank
is completely dry. The irregular supply of
fuel can cause misfir ing. Gasoline cou ld
e nte r into the exhaust system and damage
the cata lytic conve rter.
Refueling
Fig. 133 D river 's doo r: Unlocki ng fuel filler flap
Fig. 134 Fuel cap hooked on the opened fuel filler flap
When adding fuel, the ignition and any cellu
lar phones in the vehicle must be sw itched
off .
Tak ing th e fuel cap off
• To open the fuel filler flap, press the button
9fig. 133.
• Unscrew fuel filler cap counter-clockwise
and hang it on the fuel filler flap ¢
fig. 134 .
Refueling procedure
• Insert the f uel nozzle from the gasoline
pump into the fuel fi ller neck as far as it wi ll
go .
• Select a med ium refueling rate so that the
nozzle switches off automatically when the
tank is full.
Putting th e fu el cap bac k on
• After fi lling your tank, twist the fuel filler
cap clockwise until you hear a definite click.
• Close the fue l filler flap.
T o avoid fuel spilling or evaporating from the
fuel tank always close fuel filler cap properly and completely. An improperly closed fuel fi ll
er cap may also cause the MIL lamp¢
page 22
to come on.
A WARNING
Improper refue ling or handling of fuel can
cause fire, explosion and severe burns.
- Fuel is highly flammable and can cause
severe burns and other injuries.
- Fai lure to shut the engine off while refu
eling and/or to insert the pump nozzle
fully into the fuel filler neck could cause
fuel to spray out of filler neck or to ove r
flow. F ue l spray and overflowing fuel can
cause a fire.
- Never use a ce llular telephone while re
fue ling. The electromagnet ic rad iat io n
can cause spa rks that can igni te fuel va
pors and cause a fire.
- Never get back into your vehicle whi le re
fue ling.
If in exceptio nal circumstances
you must get back in your vehicle while
ref ueling, make certain that you close
the door and touch metal to discharge
static electricity before touching the fill
er nozzle again. Static electricity can
cause sparks that can ignite fuel vapors
re leased d uring refueling .
- Never smoke or have an open f lame any
where in o r near your veh icle when refu
eling or filling a portable fue l conta iner.
