2008 AUDI A4 AVANT octane

Fuel supply and filling your fuel tank
Gasoline
Fuel supply
Using the right fuel helps keep the environment clean and
prevents engine damage.
F u el re comm end ati on
The fuel recommended for your vehic le is unle ad ed pr em ium grade
gaso line . See
a lso => page 343, "Data". Audi recommends using TOP
TIER Detergent Gaso line with a minimum octane rating of 91 AKI (95
RON). For more informat ion on TOP TIER Detergent Gaso line, p lease
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 ins ide of the fuel fi ller flap. This
rating may be specified as A KI o r RON .
Your vehicle may also be operated us ing u nleaded regular gasoline
with a minimum octane rating of 87 AKl/91 RO N. However, using 87
A Kl/9 1 RON octane fuel w ill sl ight ly reduce engine performance.
U se unleaded 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 informati on on refueling yo ur vehicle,
see => page 268 .
Octan e ra ting
Octane rating indicates a gaso line's abil ity to res ist engine
damaging
" k nock" caused by premature ign ition and detonation.
Therefore, buying t he correct grade of gasoline is very i mpo rtant to
help prevent possible engine damage and a loss of engine perfor ­
mance.
Fu el supply and fillin g your fu el tank
Gasol ine most common ly used in the Un ited States and Canada has
the fo llowing octane ratings that can usua lly be found on the filler
pump :
• Premium Grade : 91 - 96 AKI
• Regu lar Grade: 87 -90 AKI
Explanation of t he abbrev iat ions:
AKI = Anti Knock Index= (R +Ml/2 = (RO N+MON)/2
RO N= R esearc h Octane Num ber
MON = M otor Octane Number .
0 Note
• Do n ot use any fue l with octane ratings l ower than 87 AKI o r 91
RO N otherwise expensive engine damage wi ll occur.
• Do
not use leaded gasoline! The use of leaded gaso line wi ll
severe ly damage your vehic le's catalytic converter and its abi lity to
co ntr ol exhaus t em issions. •
Blended gasoline
Use of ga soline containing alcohol or MTBE (m ethyl
tert iary but yl ether )
You may use unleaded gaso line blended with alcohol or MTBE
(commonly referred to as oxygenates) if the blended mixture meets
the fo llow ing criteria:
Blend of ga soline meth anol (wood alcohol or methyl alc ohol)
• 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

lffl __ C_ o_n_ s_ u_m _ e_ r_ ln_ f_
o _r _m _ a_ t_ i_o _n ______________________________________________ _
For additional road safety information, please visit the Road Safety
website at:
http://www.tc.gc.ca/roadsafety/menu.htm
•
Operating your vehicle outside the U.S.A. or Canada
Government regu lations in the United States and Canada require
that automob iles meet specif ic em ission regulations and safety
standards. Therefore, vehic les bui lt for the U.S.A . and Canada differ
from veh icles sold in ot her countries.
I f you p lan to take your vehic le outside the continental limits of the
Un ited States or Canada, there is the possib ility tha t
• unleaded fue ls for vehicles with cata lytic converter may not be
avai lable;
• fuel may have a considerably lower octane rating. Improper fuel
may cause engine damage;
• service may be inadequate due to lack of proper service faci lities,
t ools or test ing equ ipment;
• replacement parts may not be readily avai lable .
• Navigation syste ms for vehicles bu ilt for the U.S.A . and Canada
wi ll not necessarily work in Europe, and may not work in other coun ­
tries outside of Nort h America .
0 Note
Audi cann ot be responsible fo r mechan ical damage t hat cou ld
result from inadequate fuel, service or parts avai lab ility. •
Audi Service Repair Manuals and
Literature
Audi Official Factory Service Manuals are published as soon as
possible after model introduction Serv ice manuals are available
from :
Audi Technical Literature Ordering Center Ca ll tol l-free:
Tel. : 1 (800) 544-8021
(from 8:00 AM to 8:00 PM, EST, Monday through Friday)
or access their website www.audi .ddsltd .com on the Internet to
order repair manua ls and ot her Audi literature. •
Maintenance
General
Your vehicle has been des igne d to help keep main tenance requ ire ­
ments to a minimum. However, a certain amount of regu lar mainte ­
n ance is st ill necessary to assu re y ou r veh ic le's safety, ec onomy and
reliabi lity. For detai led vehic le maintenance consu lt your Mainte ­
nance
& Warran ty booklet.
Under difficult operating condition s, for example at extreme ly low
outside temperatures, in very dusty regions, when towing a trailer
very frequently, etc ., some service work sho uld be perfo rme d
between the intervals specified. This applies particu lar ly to :
• oil ch anges, and
• cleaning or replacing the air filter.

Alph ab eti ca l ind ex -
-------------=-----
Front seats
Adjusting .... .... ....... .... .... 169
Adjusting the manual seats .... .... . 96
Child restraints in the front seat .... 189
Heated seats . . . . . . . . . . . . . . . . . . . . . 132
Front seats adjustment Importance for safe driving and riding 95
Frontal c ollisions and the laws of physics ..
177
Fuel Fuel gauge ...... .... .... ... .... .. 16
Fuel consumption Average ....... .. .... .... .... ..... 40
F uel filler flap
Un locking the fuel fi ller flap by hand 271
F uel gauge .... .... .... .... .... .... .. 16
Fuel supp ly
Addi tives ... .. .... .... ...... ... .. 267
Blended gasol ine ... .. .... ... .... . 267 Fuse arrangement
............. .... .. 327
G
Garage door opener ... .... .... .... .. 157
Gas discha rge lamps .. ...... .... ... . 328
Gauges Engine coolant temperature ......... 13
Fuel gauge .. ....... .... .... ...... 16
Speedometer ... .. .... .... .... ... . 15
Tachome te r .. ... .... .... .... .... . 13
Tr ip odometer .. ...... .... .... ... . 15
Gearsh ift lever .... .. ... .. .... .... ... 142
Genera l il lustration
Instruments and controls .. .... ..... 11
Generator Warning/ind ica tor lights ...... .... .. 22
G lossary of tire and loading term inology ...
29 4
Fuel fi ller neck ... .... .... ...... .. 268 G love compartment ... .. .... .... .... 122
Fuel gauge ...... .... .... ... .... .. 16 Light .... .... .... .... .... .... ... . 81
Fuel tank capacity ............. 16,268 Gross Veh ic le Weight Rating (GVWR) ... 341
Gaso line .. ....... .... .... ....... 267
Gaso line additives ................ 268
H
Instantaneous fuel consumption ..... 41
Octane rating .................... 267 Head restraints ..
.... .... .... ....... 171
Recommendation .... .... ..... .. . 267 Adjusting
....... ... .. .... .... ... 171
Re fuel ling ....................... 269 Rear seats
.......... ...... .... ... 106
Un locking the fuel fi ller flap by hand 271 Headl
ight
Fuel supp ly too low .. .... .... .... .... . 34 Defective .....
........ ............ 35
Fue l tank Headlight
range co ntr ol
Capacity ... .. .... .... ... .... .... 268 de
fective ..... ... .... .... .... .... . 34
Capacity (ga llons/l it res) .. ...... .... 1 6 Headlight washer reservoir ........... 291 Headlights
.. ... .... ... .. ...... .... .. 72
Adaptive light .. .... ............. .. 75
Front fog l ig hts .................... 76
Switching off ..................... 72
Switching on .......... ........ .... 72
Washer system . ....... ... .... .... . 87
Heated rear seats ...... .... .... .... ... .. 133
Heated outside mirrors ... .... .... ..... 91
Heated seats rear . ... .. .... .... ... .... ..... .. 1 33
Heated washer jets Wiper and washer system ........... 85
Heavy cl othing and safety belts .. ...... 1 80
High beam ....... ........ ....... . 72, 80
Warning/ind icator lights ........ .... 23
High vo ltage warning label ........... 340
Ho melink® U niversal Rad io- Frequency Re-
mote Contro l .. .. .... ...... .... . 157
Hood Opening ...... .... ... .... .... ... 272
Release lever ....... ... .... .... ... 272
Hor n ... .... .... .... .... ... .... .... . 1 1
How many airbags does my vehicle have? ..
19 4
How often shou ld I check my tire pressures?
300
How safety be lt tensioners work ....... 185
How to increase the loading surface .. . 104
Hydroplaning ..... ... .... .... ...... . 30 4
Controls and equip­
ment Safety first Vehicle operation
Vehicle care Do-it-yourself service Technical data

______________________________________________ A_ l_,_ p _h_ a_ b_e _t_i c_ a_l _in _ d_e _ x _ ___.fflll
Partition screen .. ... .... ......... 111
Protective liner ..... .. .... ...... .. 113
Removing luggage compartment cov-
er /partition net ... .. .... .... .... 1 11
Retractable cover ... .. .... ... .... . 110
Side Compartment ... .... ... .... . 114
Ski sack . ...... .. .... .... ...... .. 114
Tie -down strap ...... .... ......... 109
See also Loading the luggage
compartment ... .... .... ....... . 173
Lumbar support .. ...... .... ....... ... 99
M
Maintenance ..... .. ...... .... .... .. 346
Malfunct ion Indicator Lamp (M IU . ... 20, 27
Manual transmission . ...... .... .... . 142
Gearshift lever .. ...... ... .... .... 142
Master key ........ .... .... .......... 53
Battery replacement . ...... .... .... 54
Menu button ..... .. .... .... ...... ... 42
Menu input switch . ...... .... .... .... 42
Mi le age
Average .... ... .. .... .... ...... ... 40
Ins tan taneous .... .... ...... .... .. 41
M iles to empty .. .. .. .... .... .... .... . 26
Mirrors Activating the digita l compass ..... . 93
Adjusting the a nti -g lare ...... .... .. 90
Automat ic d imm ing fo r the outside
m irrors . .... ...... .... .......... 92
Automat ically dimming inside mirror . 90
Inside rearview mirror . ...... .... ... 90
Inter ior mirror .... .... ...... .... .. 90
Controls and equip­
ment Safety first
Manual glare dimming
.......... ... 90
Outside mirrors .. .......... .... ... 91
Recalling position of outside mir rors 101
Storing posit ion of outs ide m irrors .. 101
Monitoring the Advanced Airbag System 198
multitronic™ Automatic Shift Lock (ASU 152
D riving the mu ltitronic™ .. ... .... .. 150
Dynamic shift prog ram ...... .. ... . 153
Fa il- sa fe mode .... ... .... .... .... 156
Kick-down .... .... .... .... .... ... 153
Manual shi ft program ... .. .... .... 154
Selector lever .... .... .... .... .... 1 51
Steering w heel wit h tiptronic® . .... 155
tiptron ic
154
N
Nat ural leather . ...... .... ....... .... 262
New tires and whee ls . ....... ... .. ... 305
NHTSA Contacting ..... .... .... ... .. .... 175
Number of sea ts ... .. .... .... .... ... 1 76
0
Occupant seat ing pos itio ns .. .. ... .... 1 68
Octane rating .... ...... .... .... .... . 267
Odom eter .... .... ... .... .... .... ... . 15
O il
See Eng ine oi l .... .... .... .... .... 275
O lder children and safety belts ..... .. . 219 On
-Board Diagnostic System .. ... .... .. 28
Electronic speed lim iter ... .... ..... 28
Malfunc tion Indicator Lamp (M IU .. .. 27
On -Board Diagnostic System (OBD) .... . 27
Data Link Connec tor (DLC) .. .... .... 27
Open door or rear lid warning ... .. .. . .. 26
Opening Power sunroof ....... ........... .. 68
Operate your vehicle economical ly and mini -
mize pol lution .... ... .... .... ... 245
Optional equipm ent
Mark ed with an asterisk ...... ....... 6
Out lets ...... .... .... ... .... .... ... 12 1
Outside air pollution How to prevent from enter ing the veh ic le
128
Ou ts ide mirrors ....... ... .... .... .... 91
Outside temperature display .. .... ..... 25
Owner's manual How the Owne r's Man ua l is o rganized . 6
Owner's literature storage .... .... .... 123
p
Paint
Touch -up ... .. .... .... ... .... .... 258
Pain t no ...... .. .... ...... .... .... . 340
Park assis t ... .... .... ... .... .... ... 139
Parking .. .. .. ...... .... ........... . 138
Automatic t ransmission (6 -speed) .. . 143
multitronic ™ ... .... ... .... .... ... 1 50
P arking brake ...... .... .... .... ... .. 137
Setting and re leasing . ...... .. .... 137
Vehicle operation Vehicle care Do-it-yourself service Technical data