2020 AUDI S4 fuel additives

Checking and Filling

Checking and Filling
Fuel
Types of gasoline
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. For additional information on TOP TIER De-
tergent Gasoline, visit 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 headings below match the sticker in the fuel
filler door (examples):
UNLEADED FUEL ONLY MIN. (R+M)/2 87
Regular / MIN. RON 91 Regular
Use regular gasoline with minimum 87 AKI /
91 RON > ©.
Audi recommends using premium gasoline with
minimum 91 AKI / 95 RON to achieve the rated
horsepower and torque.
UNLEADED FUEL ONLY PREMIUM MIN. (R
+M)/2 91 / SUPER MIN. RON 95
Using premium gasoline 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 the engine power slightly.
() Note
— Filling the tank just one time with leaded
fuel or other metallic additives will cause
permanent deterioration to the catalytic
converter function.
— When gasoline with an octane rating that is
too low is used, high speeds or heavy engine
load can lead to engine damage.
210
G) Tips
The vehicle may be filled with fuel that has a
higher octane rating than what is required by
the engine.
Gasoline mixture
Gasoline with alcohol or MTBE (Methyl-Tert-
Butyl-Ether)
You can use unleaded gasoline mixed with alco-
hol or MTBE (generally labeled as oxygenated
compounds) as long as the fuel meets the follow-
ing conditions:
Gasoline with methanol content (methyl alco-
hol
or methanol)
— Anti-Knock Index is at least 87 AKI
—No more than 3% methanol
— More than 2% solvent
Gasoline with ethanol content (ethyl alcohol or
ethanol)
— Anti-Knock Index is at least 87 AKI
—No more than 15% ethanol
Gasoline with MTBE content
— Anti-Knock Index is at least 87 AKI
—No more than 15% MTBE
Gasoline adapted to the season
Many gasoline fuels are adapted to the seasons.
When the season changes, we recommend refu-
eling at high-traffic gas stations. It is more likely
that the gasoline will be suitable for the season
there.
() Note
— Gasoline with methanol content that does
not meet the specified conditions may cause
corrosion damage and damage to plastic or
rubber components in the fuel system.
— Do not use gasoline that does not meet the
specifications.
— If you are unable to find out if a specific gas-
oline mixture meets the specifications, ask
the gas station operator or their fuel suppli-
er.

8W1012721BB
Checking and Filling

— Do not use any gasoline mixture whose
composition cannot be identified.
— Audi does not assume any responsibility for
damage to the fuel system or for perform-
ance problems caused by using gasoline
mixtures different from those specified.
This type of damage also does not fall under
the New Vehicle Limited Warranty or under
the emissions control system warranty.
— If you notice a higher fuel consumption or
poor handling or performance problems due
to such gasoline mixtures, we recommend
fueling with unblended gasoline.
Gasoline additives
An important issue for many automobile manu-
facturers is combustion residue in the engine
that results from the use of certain fuels.
Although types of gasoline differ depending on
the manufacturer, there are similarities. Certain
substances in the gasoline may cause deposits in
the engine. Additives in the gasoline that should
keep the engine and fuel system clean do not all
function equally.
Audi recommends using TOP TIER Detergent Gas-
oline. For additional information on TOP TIER De-
tergent Gasoline, visit www.toptiergas.com.
If you use incorrect fuels over a long period of
time, the maximum engine performance may be
impaired by combustion residue.
@) Note
— Damage or malfunctions caused by the use
of incorrect types of gasoline are not cov-
ered by the New Vehicle Limited Warranty.
— Only gasoline additives that have been ap-
proved by Audi may be used.
Refueling
Messages
[i Tank system: malfunction! Please contact
Service

There is a malfunction in the fuel tank system.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected.
Fueling procedure
Fig. 156 Right rear side of the vehicle: opening the fuel
filler door

Fig. 157 Fuel filler door with attached fuel cap
The fuel filler door is unlocked or locked by the
central locking system.
> Unlock the vehicle if necessary.
> Press on the left side of the fuel filler door to
open it > fig. 156.
> Unscrew the tank cap counterclockwise.
> Place the cap from above on the open fuel filler
door > fig. 157.
> 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.
> After the fuel pump has switched off, wait five
seconds before removing the nozzle to allow
the rest of the fuel to finish dripping into the
fuel tank.
211

8W1012721BB
Index

F
Factory default settings
Multi Media Interface................. 207
Fast forwarding and rewinding (media files) . 197
Fast forwarding (media files)............ 197
Fast route... . eee eee eee 177
Favorites
BIWEtOOtH s = sass ¢ s eeae ¢ 5 Besse Hee aE 208
NaVigationis ¢ s cesses « 2 smsnsns w + seaians @ 5: secu 178
Telephone... ...... cece eee eee eee 163
Federal Communications Commission (FCC) . 275
File formats (media drives).............. 201
Filling
Tank capacities.......... 0.00022 eae 278
FIXGUTE SOBs is 6 cctene w e cenrere we ermine s Heme vee 84
For the sake of the environment
Disposing of engine oil................ 219
FUGLING s = sacsu = & corey 5 % tees 5 2 CoG FS eS 211,
Oo eee ee ee 215
Forward gear
refer to Gears... . eee eee eee 94
Free text search
Media... .... ec eee eee eee eee 200
Radioves « = cows « = sews so tes ee ees FP oe 190
also refer to Intelligent search.......... 177
Freeze protection
Coolant... .... 2... eee eee eee 220
Frequency bands « « cesiie a 6 scone a wanna 6 6 ow 188
also refer to Frequency band........... 188
Front center armrest...............0...- 62
Front collision warning
refer to Audi pre sense front............ 139
Front passenger’s seat adjustment
R@af wess 2 s aves 7 ¥ eee © e ewe x Y Bem eH ee 62
Front wiper blades
GHANGING)'s = = cosa =o vase =o ween © rem 2 YB 56
CLEARING « « vxorcise esesese 0 4 uounece 0 9 enecee «weet 56
Ch: sncevss 6 @ sessans « 0 vomans a 2 row & ¥ one =o HO 210
Additives... 0.0... . cee eee eee ee eee 211
Current consumption « cc. «+ sews se eegu ee 15
Fuelidisplay, sissies x asssce a a arene + ¥ name 6 e ow 11
Gasoline
Reducing fuel consumption............. 99
Tank. capacity’. « ccs se cen vo neem eae 278

Fueling
Fuel filler door. .... 0.0... cece e eee ee 211
Fuel filler door emergency release....... 213
Functions on demand...............4.. 171
Functions that require a license
refer to Functions ondemand.......... L171
Fuses
IASSIQNIMIEN ES & sesoies & w sasene © 8 cansers a a emnoees 265
Replacing......... 0. cece eee eee eee ee 264
G
Garage door opener...........0-..0e eee 45
Garment hooks ........ 0.0 e cece eee eee 78
GasOliMe arco: x saves wo anane = y oem moa aw 210
Additives... 0.0.0... cece cece eee eee 211
Gasoline: MIXtUE wacx « s wemy cv came : eee 210
GAWR
refer to Gross Axle Weight Rating (GAWR) . 278
GOATS: x © exes = & wee ¥ ¥ eeu = RoRee SE Pe ee 94
Glossary of tire and loading terminology... 230
Glove compartment...............000005 78
LOckKablets. + cwou 4 x youn os nau sx Meme Fe me 78
Valet parking. .......... ccc eee eee 44
Gross Axle Weight Rating (GAWR)........ 278
Gross Vehicle Weight Rating (GVWR)...... 278
GVWR
refer to Gross Vehicle Weight
Rating (GVWR) .......... 00sec eee eee 278
H
Handsfree. ..... 2... ee eee ee eee 159
Hands Free Profile..................... 159
Head-up display
Adjusting ..... 0... 66. e eee eee 23
Adjusting the brightness ................ 52
OPeratiAg’, « s sussau v saan av epcasan ew anes ow a8 23
Headlight range control...............005 48
Headlights’. 2 cus xe ren vo semw so ames 6 0 ee 48
Cleaning... 0.0.2... cece cece eee eee 248
Headlight range control................ 48
Washer system « «sees 2s sees s eeee ee oes 55
Head feSthaints © aims pasms » mens ss vo se 63
Heated rear window................0000e 90
Heated steering wheel................0.. 90
Heating...........0..0 0.0. 87
283