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•
Fuel supply
and filling
your fuel tank
Gasoline
Fuel supply
Using the right fuel helps keep the environment clean and
prevents engine damage.
Fuel
reco
mm
e
nd
a
ti
o
n
The fuel recommended for your vehic le is
unleaded premium
grade
gaso line
.
See also
~
page 296, "Data". Audi recommends using TOP
TIER Detergent Gasoline with a minimum octane rating of 91 AKI (95
RON). For more information on TOP TIER Detergent Gasoline, please
go to the official website (www.toptiergas .com).
The recommended gasoline octane rating for your engine can also
be found on a label located on the inside of the fuel fille
r
flap. This
rating may be specified as
AKI
or
RON.
Your vehic le may also be operated us ing unleaded regular gasoline
with a minimum octane rating of 87 AKl/91
RON.
However, using 87
AKl/9
1
RON octane fuel will slightly reduce engine performance.
Use unle aded gasoline
only. Unleaded gaso line is avai lable
throughout
the USA, Canada, and in most European countries. We
recommend that you do not take your vehicle to areas or countr ies
where un
leaded
gasoline may not be available
.
For more information
on refueling your vehicle, see
~
page
219.
O
c
t
ane ra
tin
g
Octane rating indicates a gaso line's ability to resist engine
damaging
"knock"
caused by premature ignition and detonation.
Therefore, buying the correct grade of gaso line is very important to
help prevent possible engine damage and a loss of engine perfor
-
mance.
Gasoline most common ly used in the United States and Canada has
the
following
octane ratings that can usua lly be found on
the
filler
pump:
•
Premium Grade
:
91
-
96 AKI
•
Regular Grade: 87
-
90 AKI
Explanation of the abbreviations:
AKI
=
A
nti Knock Index= (R+M)/2
=
(RON+MON)/2
RON
=
Research Octane
N
umber
MON
=
M
otor Octane Number
.
0
Note
•
Do not use any fue
l
with 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 will
severe ly damage your vehicle's catalytic converter and its abi lity to
control exhaust emissions.
•
Blended
gasoline
U
s
e
o
f g
aso
line
co
nt
a
ining
a lco
h
o
l or M
T
B
E
(m
e
th
y
l
t
er
t
iary
but
yl e
ther
)
You may use unleaded gasoline blended with alcohol or MTBE
(commonly referred to as oxygenates) if the blended mixture meets
the follow ing criteria:
Blend of gasoline meth anol (wood
alcohol
or methyl alcohol)
•
Anti-knock index must be 87 AKI or higher
.
•
Blend must contain no more than 3% methanol.
•
Blend must contain more than 2% co-solvents.
Vehicle care
I
t
•
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