2018 AUDI A3 SEDAN fuel additives

Checking and Filling
Checking and Filling Fuel
Gasoline grade
A pp lies to: ve hicles w ith gasoline engines
The correct gasoline grade is stated on the inside
of the fuel filler door .
The vehicle is equipped with a catalytic converter
and must only be driven with
unleaded gasoline .
Audi recommends using TOP TIER Detergent Gas­
oline. Additional information on TOP TIER Deter­
gent Gasoline can be found on the official web­
site (www .toptiergas.com).
The individual gasoline grades are differentiated
by
octane ratings. This value is given with (R +M)/
2 equating to AKI or in RON.
The following headings match the corresponding
sticker in the fuel filler door .
UNLEADED FUEL ONLY MIN. (R+M)/2 87
Regular/ MIN. RON 91 Regular
Use regular gasoline with minimum 87 AKI/
91 RON
i::>@ .
The max imum eng ine power is only reached if
p rem ium gasol ine 91 AKI/ 95 RON is used.
UNLEADED FUEL ONLY PREMIUM MIN. (R
+M)/2 91 / SUPER MIN. RON 95
Using premium gaso line with minimum 91 AKI/
95 RON is recommended.
If premium gasoline is not available, you can also use regular gasoline 87 AKI/ 91 RON . However
this does reduce th e engine powe r slight ly.
0 Note
- Fillin g the tank just one time with leaded
fuel or other metallic additives will cause
permanent deter iorat ion to the catalytic
converter function.
- When gasoline with an octane rat ing that is
too low is used , h igh speeds or heavy engine
load can lead to engine damage.
314
(D Tips
The vehicle may be filled with fuel that has a
h igher octane rating than what is required by
the eng ine.
Blended gasoline
App lies to : vehicles wi th gaso line e ngi ne
Use of gasoline containing alcohol or MTBE
(methyl tertiary butyl ether)
You may use unleaded gasoline blended with al ­
cohol or MTBE (commonly referred to as oxygen­
ates) if the blended mixture meets the following
criteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol)
- Anti-knock index must be 87 AKI or h igher.
- Blend must contain no more than
3% metha-
nol.
- Blend must contain more than
2% co-solvents.
Blend of gasoline and ethanol (grain alcohol or
ethyl alcohol)
-Anti-knock index must be 87 AK I or h igher.
- Blend must not conta in more than 15% etha-
nol.
Blend of gasoline and MTBE
- Anti -knock index must be 87 AKI or higher.
- Blend must not contain more than 15% MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform es­
pecially well for winter or summer dr iv ing . Dur­
i ng seasonal change-over, we suggest that you
fill up at busy gas stat ions where the seasonal
adjustment is more lik ely to be made in t ime.
@ Note
- Methanol fuels which do not meet these re­
quirements may cause corrosion and dam­
age to plastic and rubber components in the
fuel system.
- Do not u se fue ls that fail to meet the speci-
fied criteria in this chapter.
...

LL co .... N
" N .... 0 N > co
-If you are unable to determine whether or
not a particular fuel blend meets the speci­
fications, ask your service station or its fuel
supplier.
- Do not use fuel for which the contents can­
not be identified.
- Fuel system damage and performance prob­
lems resulting from the use of fuels differ­
ent from those specified are not the respon­
sibility of Audi and are not covered under
the New Vehicle or the Emission Control
System Warranties .
- If you experience a loss of fuel economy or
driveability and performance problems due
to the use of one of these fuel blends, we
recommend that you switch to unblended
fuel.
Gasoline additives
A major concern among many auto manufactur­
ers is carbon deposit build-up caused by the type
of gasoline you use.
Although gasoline grades differ from one manu ­
facturer to another, they have certain things in
common. All gasoline grades contain substances
that can cause deposits to collect on vital engine
parts, such as fuel injectors and intake valves.
Al­
though most gasoline brands include additives to
keep engine and fuel systems clean, they are not
equally effective .
Audi recommends using TOP TIER Detergent Gas­
oline. For more information on TOP TIER Deter­
gent Gasoline, please go to the official website
(www.toptiergas .com) .
After an extended period of using inadequate
fuels, carbon deposit build-ups can rob your
en­
gine of peak performance.
(D Note
Damage or malfunction due to poor fuel qual­
ity is not covered by the Audi New Vehicle
Limited Warranty.
Checking and Filling
Refueling
Fueling
Applies to: vehicles without plug-in hybrid drive
Fig. 260 right rear side of the ve hicle: open ing the fuel
filler door
Fig. 261 Fuel filler door with attached fuel cap
Plug-in hybrid drive*: refer to the information un­
der ¢pag e 103, Refueling .
The fuel filler door is unlocked or locked by the
central locking system.
.,. Applies to: vehicles with plug-in hybrid drive:
note the information
on¢ page 103, Opening
the fuel filler door.
.,. Applies to : vehicles without plug-in hybrid
drive: to open, press on the left side of the fuel
filler
door¢ fig. 260 .
.. Unscrew the tank cap counterclockwise .
.,. Place the cap from above on the open fuel fille r
door ¢
fig. 261.
.,. Insert the fuel pump nozzle all the way into the
fuel filler neck.
.,. Begin fueling. Once the fuel pump nozzle turns
off the first time, the fuel tank is full. Do not
continue fueling, or else the expansion space in
the tank will be filled with fuel.
.,.
315

Index
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Foldi ng the rea r seats . . . . . . . . . . . . . . . . 65, 66
Foot pedals .. .. .. ............. .... .. . 254
For the sake of the enviro nment
E nvi ronme nta lly -fr iendly driv ing . . . . . . . .
73
Leaks. ... ...... ... .. ..... ... .. .. ... 3 19
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Fr ee tex t sea rc h . . . . . . . . . . . . . . . . . . . . . . 16 2
Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 20 1
Radio ... ...... ... .. ..... ... .. .. ... 2 19
Telephone. . . . . . . . . . . . . . . . . . . . . . . . . . 186
Fr ee ze protection
Coolan t . . . . . . . . . . . . . . . . . . . . . . . . . . . .
324
Frequency band . . . . . . . . . . . . . . . . . . 2 18 , 221
Front airbags
Description . . . . . . . . . . . . . . . . . . . . . . . . .
273
How t hey wo rk . . . . . . . . . . . . . . . . . . . . . . 279
Fr on ta l co llisions and the laws of p hys ics . . 261
Front center armrest . . . . . . . . . . . . . . . . . . . 60
Front passenger 's door emergency release . . 36
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
A dju sting . . . . . . . . . . . . . . . . . . . . . . . . . . 2 51
Ch ild restraints in the front seat . . . . . . . . 270
Fue l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 14
Add it ives . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 14
B lended gasoline 3 14
Curre nt cons umption . . . . . . . . . . . . . . . 17 , 18
Fue l g auge . . . . . . . . . . . . . . . . . . . . . . . 10, 12
Fue l tank capacity . . . . . . . . . . . . . . . . . . . 382
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 14
Gasoline additives ............ .... .. . 315
Saving fue l . . . . . . . . . . . . . . . . . . . . . . . . . 140
Fue lin g
F ue l fi ller door emergency release . . . . . .
3 17
Fue l gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2
Fue l tank capac ity . . . . . . . . . . . . . . . . . . . 382
Opening the fuel fille r door . . . . . . . . . . . . 315
Fue l shu t-off d uring dece lera tion . . . . . . . . . 73
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371
G
Garment hooks . . . . . . . . . . . . . . . . . . . . . . . . 63
Gas discharge lamps . . . . . . . . . . . . . . . . . . . 373
392
Gasoline 314
Octane rating . . . . . . . . . . . . . . . . . . . . . . . 314
Recommendat ion . . . . . . . . . . . . . . . . . . . . 314
GAWR
refer to Gross Axle Weig ht Ra ting (GAWR) 3 .82
G lossary of t ire and loading term inology . . 333
Glove compartment . . . . . . . . . . . . . . . . . . . . 63
G mete r
refer to Sport displays . . . . . . . . . . . . . . . . . 20
Gross Axle We ight Rati ng (GAWR) . . . . . . . 382
Gross Vehicle Weight Rating (GVWR)
GVWR
refer to Gross Vehicle Weight
382
Rat ing (GVWR) . . . . . . . . . . . . . . . . . . . . . . 3 82
H
Handsfree . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7
Head light range control . . . . . . . . . . . . . . . . . 49
Head lights . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Head light range contro l . . . . . . . . . . . . . . . 49
Washer system . . . . . . . . . . . . . . . . . . . . . . 55
He ad rest rain ts . . . . . . . . . . . . . . . . . . . . . . . 252
Adjus ting . . . . . . . . . . . . . . . . . . . . . . .
61, 252
Removing a nd insta lling . . . . . . . . . . . . . . . 61
Heated
Exte rior m irro rs . . . . . . . . . . . . . . . . . . . . . .
53
Rear w indow (au toma tic climate con trol sys -
tem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
70
Seats (automatic climate contro l system) . 70
Washer fluid nozz les . . . . . . . . . . . . . . . . . . 55
Heating/ven tilation system
Adjus ting the air ven ts. . . . . . . . . . . . . . . . .
71
Heavy cloth ing and safety be lts . . . . . . . . . . 263
Hex socket . . . . . . . . . . . . . . . . . . . . . . . . . . . 360
Hig h-voltage batte ry . . . . . . . . . . . . . . . . . . . 93
Charg ing . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Hig h beams . . . . . . . . . . . . . . . . . . . . . . . . . . . SO
H. h b . 1g earn ass istant . . . . . . . . . . . . . . . . . . SO
Hill descent control . . . . . . . . . . . . . . . . . . . .
87
Hill ho ld assist . . . . . . . . . . . . . . . . . . . . . . . . 83
also refer to Hill hold assis t . . . . . . . . . . . . 83
Hold ass ist (hill) . . . . . . . . . . . . . . . . . . . . . . . 83
Home address . . . . . . . . . . . . . . . . . . . . 203, 207
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8