2021 AUDI TT 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 >©.
UNLEADED FUEL ONLY PREMIUM MIN. (R
+M)/2 91 / SUPER MIN. RON 95
Using premium gasoline with minimum 91 AKI /
95 RON is recommended.
Applies to: TT and TTS models: If premium gaso-
line is not available, you can also use regular gas-
oline 87 AKI / 91 RON. However this does reduce
the engine power slightly.
Applies to: RS models: To achieve the specified
power and torque, Audi recommends using pre-
mium plus gasoline with at least 93 AKI / 98
RON.
Applies to: RS models: If premium gasoline is not
available, you can also use regular 87 AKI /
91 RON gasoline if absolutely necessary. Howev-
er, you must only drive in the middle of the RPM
range and with low engine load. Refuel your vehi-
cle with premium gasoline as soon as possible.
UNLEADED FUEL ONLY PREMIUM MIN. (R
+M)/2 93 / SUPER PLUS MIN. RON 98
Using premium plus gasoline with at least 93
AKI / 98 RON is recommended.
196
If no premium plus gasoline is available, you can
also use premium gasoline with 91 AKI / 95 RON.
However this does reduce the engine power
slightly.
C) 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.
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, refueling at high-traf-
fic gas stations is recommended. It is more likely
that the gasoline will be suitable for the season
there.

8S1012721BE
Checking and Filling

@) 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.
— 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, Audi recom-
mends 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.
CG) 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
Fueling procedure
Your vehicle is equipped with a capless fuel filler
system.

BFV-0225


Fig. 161 Right rear side of the vehicle: opening the fuel
filler door

BFV-0226

Fig. 162 Right rear side of the vehicle: fuel pump nozzle
inserted
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. 167.
> Insert the fuel pump nozzle all the way into the
fuel tank filler neck > fig. 162. Make sure it is
seated correctly.
> Begin fueling. Once the fuel pump nozzle turns
off the first time, the fuel tank is full. Do not
197

>

8S1012721BE
Index

Free text'searchicccs . 2 cece ee emer ve mee ve 118
Media... .... cece eee eee eee eee 179
NaVigationts s ¢ ems « 4 zeus 5 2 sees § 2 meee 149
RadiOtes. ce scene e ae vv omnes © Hetero ww oe 165
Telephone.......... 0. cece eee eee 138
Freeze protection
Coolant.......... cece eee eee eee 207
Frequency band................... 164, 166
also refer to Frequency band........... 164
EUGL » sens ¢ 5 seme y © ees fe weee ts een 2 oe 196
AGdIRIVES « sce @ sires ¥ 0 oneneon 2 8 rere 3 8 oe 197
Current fuel consumption............... 15
Fue@ldisSplay sacs s s acu = ¢ eins 3 ¢ eaves Gg ee 10
FURL QaUGC Hii. 5 wise 2s wae es wee oe eer 2 12
Fuelstank capacity’. « sive oo snore x eee 6 « 264
Gasoline... 2.2... ee eee eee eee 196
Reducing fuel consumption............. 74
Saving fuel... 0.0... 2... eee eee eee eee 96
Fueling
Fuel filler door manual release.......... 200
FUCL GAUGE cs s sccm ss news 2s peee eo Bee 12
Fuel:tank. capacity’. « css ov een ex new oe 264
Opening the fuel filler door............ 197
With reserve canister (emergency fueling) . 199
Fuses
ASSIQNMENE's soso se cece 5 & sei s ¥ cere vs 254
Replacing ........ 0. cee eee eee ee eee 253
G
Garage:door Opener ais + 6 sven + 6 see © 6 saeco © 28
Garment hookS:sis 3 6 eva 3s ees ov oma vv oe 64
GasOlin@rs: owes ev ween 2 seems 2 mee ees 196
Additives ...... 0.0.0... eee eee eee 197
Gasoline mixture..............00--00. 196
GAWR
refer to Gross Axle Weight Rating (GAWR) . 264
Global commands (voice recognition sys-
HOM) cao a x seas wo samen aH catmans ww cK & Bae 123
Glossary of tire and loading terminology... 217
GIOVE COMPATEMENE wen s s wees ss waren ss ee 64
G meter
refer to Sport displays.................. 15
Gross Axle Weight Rating (GAWR)........ 264
Gross Vehicle Weight Rating (GVWR)...... 264
GVWR
refer to Gross Vehicle Weight
Rating (GVWR) « « esss 2 x wens 2 ean 2 Hen 264
H
HanaSTrGG: ¢ s aus 5 s sees sc ee Fo eee eae 129
Hands Free Profile.............00eee eee 129
Headlight range control system........... 36
Headlights............ 0.0... e eee eee eee 37
ClOANING « < s swan so sees ye ees gs wees eo: 237
Headlight range control system.......... 36
Washer system. ...... 0.0.0 cee eee eae 41
Heated
Exterior mirrors... 20... cee cece eee ee 39
REAP WINdOWen»: = s aoe « x wou 2 eee a ee 71
SeatSiene s wuss a x aan 2 aie © ¥ arene © w areine 5 71
Washer nozzles..........-.00--000 eee 41
Heating........... 0.002. ee 69
Hex socket ..... 0.0.0... cece eee ee eee 242
HFP
refer to Hands Free Profile............. 128
Hill descent control...............-.000- 85
Hill hold assist... 0.2.2... eee eee eee eee 80
also refer to Hill hold assist............. 80
Home address...........-00 000 e ee 150, 154
HomeLink
refer to Garage door opener............. 28
HOM... eee eee 6
Hotspot
refer to Wi-Fi vc ¢ = een 2 gees sv ees 146, 173
I
Ignition (indicator light)................. 16
Imbalance (wheels) ...........--..00005 223
Immobilizer
refer to Electronic immobilizer........... 19
Importing and exporting (contacts) ....... 138
Indicator lights. ..... 2.0.0... cee eee eee eee 7
Input
Using the MMI touch...............--. 112
Using theispelleticcis « « sane 6 3 sews o smenes 117
Input level (media) ..............0000005 180
Inspection interval owas « same + supe + 2 sem 212
269