2015 AUDI TT ROADSTER octane

160 Fuel supply and filling your fuel tank
Fuel supply and filling
your fuel tank
Gasoline
Fuel supply
Using the right fuel helps keep the environ­
ment clean and prevents engine damage .
Fuel recommendation
The fuel recommended for your vehicle is un­
leaded premium
grade gasoline . Audi recom­
mends using TOP TIER Detergent Gasoline
with a minimum octane rating of 91 AKI (95
RON) . For more information on TOP TIER De­
tergent 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 locat­
ed on the inside of the fuel filler flap. This rat­
ing may be specified as AKI or RON.
Your vehicle may also be operated using un­ leaded regular gasoline with a minimum oc­
tane rating of 87 AKI/91 RON. However, using
87 AKl/91 RON octane fuel will slightly re­
duce engine performance.
Use unleaded gasoline only. Unleaded gaso­
line is available throughout the USA, Canada,
and in most European countries. We recom­ mend that you do not take your vehicle to
areas or countries where unleaded gasoline
may not be available.
For more information on refueling your vehi­
cle, see ¢
page 161.
Octane rating
Octane rating indicates a gasoline's ability to
resist engine damaging "knock" caused by
premature ignition and detonation. Therefore,
buying the correct grade of gasoline is very
important to help prevent possible engine
damage and a loss of engine performance.
Gasoline most commonly used in the United
States and Canada has the following octane ratings that can usually be found on the filler
pump : -
Premium Grade: 91 -96 AKI
- Regular Grade: 87 -90 AKI
Explanation of the abbreviations:
AKI= Anti Knock Index= (R+M)/2 = (RON
+MON)/2
RON= Research Octane Number
MON = Motor Octane Number .
@ Note
-Do not use any fuel 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 severely damage
your vehicle's catalytic converter and its
ability to control exhaust emissions.
Blended gasoline
Use of gasoline containing alcohol or
MTBE (methyl tertiary butyl ether)
You may use unleaded gasoline blended with
alcohol or MTBE (commonly referred to as
oxygenates) 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 higher.
- Blend must contain no more than 3% meth-
anol.
- Blend must contain more than 2% co-sol-
vents.
Blend of gasoline and ethanol (grain alcohol
or ethyl alcohol)
- Anti-knock index must be 87 AKI or higher.
- Blend must not contain more than 10%
ethanol.
Blend of gasoline and MTBE
- Anti-knock index must be 87 AKI or higher.
- Blend must contain not more than 15%
MTBE.
Seasonally adjusted gasoline

Consumer Information
Warranty coverages
Your Audi is covered by the following war­
ranties :
-New Vehicle Limited Warranty
- Limited Warranty Against Corrosion Perfo-
ration
- Emissions Control System Warranty
- Emissions Performance Warranty
- California Emissions Con trol Warranty (USA
vehicles only)
- California Emissions Performance Warranty
(USA vehicles only)
Detailed information regarding your warran ­
ties can be found in your
Warranty & Mainte­
nance booklet .
Operating your vehicle
outside the U.S.A. or
Canada
Government regulations in the United States
and Canada require that automobiles meet
specific emission regulations and safety
standards. Therefore, veh icles built for the
U.S.A. and Canada differ from vehicles sold in
other countries .
If you p lan to take your vehicle outside the
continental limits of the United States or Can­
ada, there is the possibility that:
- unleaded fuels for vehicles with cata lytic
converter may not be available;
- fuel may have a considerably lower octane
rating . Improper fuel may cause engine
damage ;
- service may be inadequate due to lack of
proper service facilities, tools or testing
equipment ;
- replacement parts may not be readily availa­
ble.
- Navigation systems for vehicles built for the
U.S.A. and Canada will not necessari ly work
in Europe, and may not work in other coun­
tries outside of North America.
Consumer Information 225
@ Note
Audi cannot be responsible for mechanical
damage that could result from inadequate
fuel, service or parts availab ility.
Audi Service Repair
Manuals and Literature
Audi Offic ial Factory Service Manuals and Lit ­
erature are published as soon as possible after
model introduction. Service Manuals and liter­
atu re are availabl e to order from the Audi
T echnical Literature Ordering Center at:
www.audi.techliterature.com
Maintenance
' General
Your vehicle has been designed to help keep
maintenance requirements to a minimum.
However, a certain amount of regular mainte­
nance is still necessary to assure your vehicle's
safety, economy and reliability . For detailed
vehicle maintenance consult your Warranty
&
Maintenance booklet.
Under difficult operating conditions , for ex­
ample at extremely low outside temperatures ,
in very dusty regions, etc., some service work
shou ld be pe rformed between the intervals
specified. This applies particularly to:
- oil changes, and
- cleaning or replacing the air fi lter.
@ For the sake of the environment
By regu larly maintaining your vehicle, you
help make sure that emission standards
are maintained, thus min imizing adverse
effects on the environment.
Important considerations for you and
your vehicle
T he increasing use of electron ics, soph isticat­
ed fuel injection and emission control sys­
tems, and the generally increasing technica l
complexity of today's automobiles, have ..,_
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F
Fan ... .. .. .. .. .... .. .... ... .. .. .... 68
Radiator ... .. ... .. ..... ... .. .. ... 173
F astening
Booste r seats ............ .. .. .. .. . 136
Conve rtible c hild s afety sea ts . .. .. .. . 134
I nfant sea ts
Flat t ire 134
Changing .. .. .............. ... ... 208
F loor mats . . . . . . . . . . . . . . . . . . . . . . . . . . 96
F og lights . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Foldi ng master key w it h remote contro l . . 32
F oot pedals . . . . . . . . . . . . . . . . . . . . . . . . . 96
F or the sake of the environmen t
Gasoline fumes and the environment . . 16 2
L e tt ing yo ur engine warm up ... .. .. .. 73
Refueli ng .. .. .. .. .. .... ... .. .. ... 162
Saving fue l by early upshifting . ... .. .. 1 0
Fr ont airbags
D escr ipt io n ... .. ......... .. .. .. ... 1 12
H ow they work . .. ..... ... .. .. .. .. . 11 7
Fronta l co llisions and the laws of physics 10 1
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . 59
Adjusting .. ............. .... .. .... 93
Adjusting the manual seats . .. .. .. .. .. 60
Ch ild restra ints in the front seat ... .. . 109
Fu el
Additives ... .. .. .. .. .... ... .. .. ... 160
Blended gasoline ......... .. .. .. .. . 160
Current fuel mileage . . . . . . . . . . . . . . . . 23
F iller neck ................ ... ... .. 161
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 12
Fue l supp ly too low . . . . . . . . . . . . . . . . . 20
Gasoline . .. .. .. ......... .. .. .. ... 160
Gasoline additives ........ .. .. .. .. . 16 1
Octane rating ............ .. .. .. .. . 160
Recommenda tion . ..... ... .. .. .. .. . 160
Refue lling . ... .... .. .... ... .. .. ... 162
Reserve .... .. .. .. .. .... ... .. .. .... 1 2
Tank capacity . ........... .. .. .. .. . 223
Unlock ing the fue l filler f lap by ha nd . . 163
F ue l economy messages (eff iciency pro -
g ram) ..... .. .. .. .. .. .... ... .. .. .... 27
F use arrangement ......... .. .. .. .. . 213
Inde x 233
G
Garage door opener ( Home link) ... .. .. . 88
Gas d ischarge lamps .. . .. .. .. ... ... .. 215
Ga uges
Engine coolant temperature . . . . . . . . . . 11
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 12
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 10
General i llustration
Instruments and controls .... ... .. .. .. 8
Generator (warning/ indicator ligh ts) . .. . 16
G lossary of tire and loading term inology 181
G love compartme nt . . . . . . . . . . . . . . . . . . 65
G ross Vehicle We ight Rating (GVWR) ... 222
H
Head lights ....... .. ..... ........... 48
adaptive light .. .. .. . .. .... .... .. .. . 49
Cleaning .. .. .... ... .. ... ... .... .. 155
defective . . . . . . . . . . . . . . . . . . . . . . . . . . 20
F ron t fog lights . . . . . . . . . . . . . . . . . . . . 50
Switching off . ..... . .. .. ..... ... .. . 48
Switching on ... .... . ... ...... ... .. . 48
Washer system . . . . . . . . . . . . . . . . . . . . . SS
Xenon headlights . .. ........... .... . 48
Hea d restr aints .. .... ... .......... .. . 94
Adjus ting ... .... .. . .. .. ..... ... .. . 94
Heated exter io r mir ro rs . . . . . . . . . . . . . . . . . . . . 52
fron t seats ( climate co ntrol) ..... .. .. . 71
re ar w indow ..................... .. 70
Heated seats .. .. .. .. . .. .... .... .. .. . 71
Heated washer jets Wiper and washer system .... ... .. .. . 54
Hea ting .... .. .. .. .... ............. . 67
Hig h beam . . . . . . . . . . . . . . . . . . . . . . 48, 50
Hig h voltage warning label .... ... .. .. 222
Hill Descent Assist . .. .. .. ...... .... .. 84
Hill ho ld assist
Start ing on hills .. ................. . 75
Homelin k unive rsal remote con trol . .... 88
Hood Open ing .. .. .. .. .... ............. 164
Re lease leve r .. .. ... ............ .. 164
Hor n .... .. .. .. .. .. ............... .. 8
How many airbags does my vehicle have? 114
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Matte finish paint cleaning .... .. .. .. . 154
Menu button . . . . . . . . . . . . . . . . . . . . . . . . 25
Menu display . . . . . . . . . . . . . . . . . . . . . . . .
24
M irrors
Activating the digital compass . ... .. ..
58
Ad justing the exterior mirrors ... .. .. .. 52
dimming ... ..... ..... ... ... ... .... 53
M on itoring the Advanced Airbag System
118
N
Natural leather
Cleaning . .. .. .. .. .. .... ... .. .. .. .
157
New tires and wheels
NHTSA 191
Contacting ..... .. .... ... .. .. .. .... 98
Number of seats ................. ... 100
0
Occupant seating posit ions ...... ... ... 92
Octane rating . .. .. ..... ... .. .. .. .. .
160
Odometer . .. .... ......... .. .. .. .... 1 2
O il
refer to Engine oil . ....... .. .. .. .. . 166
On -Board Diagnostic System (OBD)
Data Link Connector (DLC) . ... .. .. .. .. 30
E lectronic speed limiter . . . . . . . . . . . . . . 30
Malfunct ion Indicator Lamp (MIL) . .. .. 30
Open door or front lid warning . . . . . . . . . 22
Opening convert ible top
manually . ......... ......... .... ... 42
Operate your vehicle econom ica lly and
minim ize pollution ......... .. .. .. .. .
151
Opt iona l equipment
M arked with an asterisk . . . . . . . . . . . . . . . 6
Othe r equipment (effic iency p rog ram) . .. 27
Outlets . .. .. ............. .... .. .. ..
64
Outside m irrors
refer to Exterior mirrors . . . . . . . . . . . . . 52
Outside temperature display ..... ... ... 22
Owner 's man ua l
H ow the Owner's Manua l is organized . . . 6
p
Paint damage 156
P aint No ... .. .... ......... .. .. .. .. . 22 2
Inde x 235
Park assist . ... .... ... .. .. ..... ... .. . 79
Cleaning sensors lenses . ..... ... .. .. 155
Pa rking . . . . . . . . . . . . . . . . . . . . . . . . 75 , 83
Parking brake . .. .. ................. . 74
Parking brake warning . ... .... ... .. .. . 15
Pa rking on a decline (downhill) ....... .. 75
Pa rking on an incline (uphill) ... ... .. .. . 75
Pa rts replacement . .... ......... .. .. 2 27
Pass-through . . . . . . . . . . . . . . . . . . . . . . . . 62
PASSE NGER A IR BAG OF F light . ... .. ..
119
Passive safety system .... ....... .... .. 91
Pedals ....... .. .. .................. 96
Physi cal p rinciples of a fron tal collision 101
Plastic parts
Cleaning ........ .. ...............
156
Polishing ... .. .. .. .... ............. 156
Pollen filter . . . . . . . . . . . . . . . . . . . . . . . . . 68
Pollutant filter .. .. .. ................ 68
Power locking switch .. .. ..... ... .. .. . 36
Power loc king system ... ......... .. .. . 34
Convenience close/open feature . . . . . . .
40
Locking and unloc king the veh icle from
1 ns1de . ... .. .... .. . .. .. ..... ... .. . 36
Opening and closing the win dows ... ...
40
Rear lid/tru nk lid ... . .. ..... ... .. .. . 37
Remote contro l .. ............. .. .. . 33
U nlocking and locking vehicle .... .. .. . 35
Power out lets . . . . . . . . . . . . . . . . . . . . . . .
64
Power seats
Adjustment . . . . . . . . . . . . . . . . . . . . . . .
61
Power steer ing
refer to Electro-mechanical power as-
s ist . . . . . . . . . . . . . . . . . . . . . . . . .
17, 145
Power top
Cleaning .. .. .. .. .. ...............
156
Convenience close/open feature .. .. .. . 43
Convenience openi ng/clos ing ...... .. . 43
Power window switches .. ..... ... .. .. . 39
Reactivating the system ..... ... .. .. .
40
Pregnant women
S p eci al considerations w hen we aring a
sa fe ty be lt .. .. .. .... .............
105
Programming the Homeli nk universal re ­
mote control . . . . . . . . . . . . . . . . . . . . . . . .
88
Proper occupant seating positions . .. .. . 92
Pro per safety belt posi tion ........ .. ..
104
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