fuel AUDI RS5 CABRIOLET 2015 User Guide

180 Driving and en vironm ent
8_ WARNING
After driving through water, mud, slush,
etc ., the brakes may be slow to take effect
because of wet brake rotors and pads. Dry
the brakes first by braking carefully to re­
store the full braking effect.
(D Note
Vehicle components such as the engine,
transmiss ion, suspension or electrical sys­
tem can be severely damaged by driving
through wate r.
@ Tips
- Check the depth of the water before dr iv­
i ng through it.
- Do not stop the veh icle, dr ive in reverse
or switc h the engine off when driving
t hr ough water.
- Keep in mind that oncoming vehicles
may c reate waves that raise the water
l evel and make it too deep fo r you r vehi­
cle to dr ive through safely.
- Avoid dr iving thro ugh salt water because
i t can ca use corrosion.
Warming up and
cooling down
-
By carefully warming up and cooling down
your ve hicle, you can he lp ensure that it is not
overstressed unnecessarily dur ing sporty driv ­
ing.
When warming up, the vehicle is d riven at a
maximum engine speed of 6000 RPM in order
to raise the engine oi l temperature to a mini ­
mum of 140
°F (60 °(). The tires also only
reach their full road holding capability once
they have warmed up .
The cooling fan can contin ue to run in your ve­
h icle after the engine is switched off. Howev­
er, driving the vehicle to cool it down is part ic­
ularly important. During sporty driving, the
engine and brakes, the ex ha ust system, and
the transm ission all become extremely hot.
B efore you park the vehicle, you shou ld drive it for a few miles/kilometers at
light load in
the low rpm range to allow it to cool down.
Catalytic converter
It is very important that your emission con­
trol system (catalytic converter) is function­
ing properly to ensure that your vehicle is run­
ning in an environmentally sound manner.
.. Always use lead-free gasoline c:> page 190,
Fuel supply.
.. Never run the tank down all the way to emp­
ty .
.. Never put too much moto r oil in your engine
c:> page 199, 't::71 Adding engine oil .
.. Never try to p ush- or tow -sta rt yo ur vehicle.
The catalytic converter is an efficient "clean­
up" device bu ilt into the exhaust system of
t h e vehi cle. The cata lytic conve rter bu rns
many of the pollu tan ts i n t he exh aust gas be­
f ore they are re lease d into the atmosphere.
T he exclusive use of unleaded fue l is critica lly
impor tant for the life of the catalyt ic convert­
er and prope r fu nct ion ing of the engi ne.
8_ WARNING
- T he temperature of the exhaus t system
is high, both when driving and after stop ­
p ing the engine.
- Never touch the exhaus t tail pipes once
they have become hot . This cou ld result
in burns .
- Do not park or operate the vehicle i n
areas where the hot exha ust system may
come in contact with dry grass, brush,
fue l spill or other material wh ich can
cause a fire.
- Do not app ly additional undercoating or
rustproofing on or near the exhaust
manifold, exhaust pipes, catalytic con­
ver ter or heat shields . Dur ing driv ing, the
substance used for undercoating could
overheat and cause a fire.

M N
er
u..
co ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
(D Note
-Be aware that just one tank fi lling with
le ad ed fuel will already seriously de­
grade the performance of the catalytic
converter.
- Do not exceed the correct engine oil leve l
c>page 199.
-Do not drive until the fuel tank becomes
complete ly empty. The engine could mis ­
fire. Unburned fuel could also get into
the exhaust system and this could cause
the catalyt ic converter to overheat.
- Do not turn off the ignition while the ve­
hicle is moving .
- Do not continue to operate your vehicle
under these condit ions, as otherwise fuel
can reach the catalytic converter. This
could result in overheat ing of the con­
verter, requ iring its replacement.
- To assure efficient operat ion of the Emis­
s ion Control System:
- Have your vehicle maintained properly
and in accordance with the service rec­
ommendations in your Warranty
&
Ma intenance booklet.
- Lack of proper maintenance as well as
improper use of the vehicle will impa ir
the funct ion of the emission control
system and could lead to damage .
@) For the sake of the environment
Even when the Emission Control System is
operating properly, the exhaust gas can
have a sulfur-like exhaust gas smell under
some operating states. This depends on
the s ulfur content of the fuel being used.
Using a d ifferent brand of fuel may help,
or filling the tank w ith lead-free super
grade gasoline .
Shutting down vehicle
If you would like your veh icle to remain inop­
erat ive for a longer period of time, contact an
Audi or other specialized dealer. They can ad­
vise you on necessary precautions e .g. corro ­
sion prevention, maintenance and storage.
Dri vin g and en vironm ent 181
Pay attention to additional information con ­
cerning the battery . Refer to
c> page 205 .
Operate your vehicle
economically and
minimize pollution
General
Your personal style of driving will determine
the economy of your vehicle, as well as ex ­
haust and noise levels.
Fuel economy, environmenta l impact, and
wear on your engine, brakes and tires largely depend on three factors:
- your personal d riving style
- operating conditions
- technical limitat ions
If you ant ic ipate what you need to do next and
drive economically, you can easily cut your
fuel consumpt ion by 10-15 percent . This sec­
tion w ill give you some tips on how you can
help the env ironment and your pocketbook.
(D Tips
The consumption estimates as published
by ENVIRONMENTAL PROTEC TION AGENCY
( E PA) and Transpo rt Canada may not cor re­
spond to your actual consump tion on the
road, which will vary depending upon vehi­
cle load and speed, road and weather con ­
dit ions, trip length, etc.
Drive smoothly and keep a lookout
ahead
Vehicles use the most fuel when they are ac­
celerating.
.,. Avoid unnecessary accelerating and braking.
Vehicles use the most f uel when they a re ac­
ce lerat ing. If you ant icipate what is going to
happe n next, you will need to brake less and,
th us, acce lerate less . Let the vehicle coast
whenever possible -for examp le when you see
that the next traff ic light is red.
•
•

182 Driving and en vironm ent
Avoid full throttle
Driving at moderate speeds saves fuel and
improves your mileage .
"'Try and keep well below your car 's max imum
speed.
Accelerating gently reduces fuel consump­
tion, engine wear, and does not disturb the
environment. F ue l consumption, exhaust emissions and en ­
g ine no ise increase d isproportionately at high
speeds. If you dr ive at approximately three
quarters of top speed, fuel consumption will be reduced by one half. Never dr ive faster
than the posted speed limit and weather con­
d itions permit .
Reducing unnecessary idling
Even when your car is just idling it burns up
fuel.
"'Shut the engine off when you are not dr iv ing
the vehicle .
"'Do not warm up the veh icle by letting the
engine run at idle .
It makes sense to shut
off the e ngine in traff ic
jams, when waiting for trains to pass at ra il­
road crossings , or at traff ic lights that have
l ong wa its on red. Turning the engine
off fo r
just
30-40 seconds saves more fue l than is
bu rned s tarting the eng ine again .
It takes a long time for the engine to warm up
fu lly when it is running at idle . Howeve r, wear
and nox ious em issions are especially high
when the engine is warming up. So you should
drive away as soon as you start the engine and
avoid running at high rpms while the engine is
still warming up .
([) Note
Do not leave engine idling unattended af ­
ter starti ng . If warning lights should come
on to indicate improper operation, they
wou ld go unheeded. Extended idling also
produces heat, which cou ld result in over- heating o
r othe r damage to the ve hicle or
other property .
Regular maintenance
A badly tuned engine unnecessarily wastes a
lot of fuel.
"' Have your ve hicle serviced at reg ular in ter -
vals.
By having your veh icle regu la rly serviced by an
a utho rized Aud i dea le r helps to ensure that it
runs properly and econom ic all y. The cond it ion
of your veh icle not on ly affe cts its safety and
ability to ho ld its va lue, it a lso affects
fuel
con sumption .
Check your oil ea ch time you fill your tank.
The amount of o il used is re lated to engine
load and speed .
It is normal for the oil consumption of a new
engine to reach its lowest value after a certa in
mileage has bee n driven.
You must drive your veh icle about 3,000 m iles
(5,000 kilometers) before you can properly
assess oil consumpt ion.
This also app lies to fue l cons umption and en­
gine output.
(D Note
- Have your vehicle maintained proper ly
and in accordance with the service rec ­
ommendations in your Warranty
& Main­
tenance booklet. Lack of proper ma inte­
nance as well as improper use of the ve­
hicle will impair the function of the
em iss ion contro l system and cou ld lead
to damage.
- Do not alter or remove any component of
the Emission Control Sys tem unless ap­
proved by the manufacture r.
- Do not alte r or remove any device, such
a s hea t sh ie lds, swi tches, ig nitio n w ires,
valves, which are designe d to p rotec t
your vehicle's Emission Control System
and other impo rtant vehicle compo­
nents .

M N
er
u..
co ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
Fewer short trips
Fuel consumption will always be relatively
high on short trips.
11-Try to avoid driving short distances with a
cold engine.
The engine and catalytic converter have to
reach their optimal
operating temperature to
reduce fuel consumption and noxious emis­
sions effectively .
Just after starting, a cold engine in a mid-size
car only achieves a fuel economy of 6-8 miles
per gallon (30-40 l/100 km). After about a
half a mile, fuel economy climbs to 12 mpg
(20 l/100 km). After about
2.5 m iles (4 km),
the engine is at its proper operating tempera­
ture and fue l economy has reached a normal
l eve l. So you can see that you should avoid
short trips whenever possible.
The
outside temperature is also critical in this
regard. Your car consumes more fuel in the
winter than in the summer.
Driving and environment 183
•
•

186 Vehicle care and cleaning
Component Situation Solution
Wheels
Road sa lt Water
Brake dust Acid-free special cleaning so lution
E x haust tail Road sa lt Water, cleaning solut ion suitable for sta inless steel, if
pipes necessary
Power top D irty Clean w ater, powe r top cleaning p rod uct, if necessa ry.
Clean with the grain o f the fabric using a soft br ush and
allow to air dry.
Wind d eflector Dirty Water, mild soap solutiona>, if necessary
Decorative Dirty Mild soap solutiona>, a cleaning solution suitab le for
parts/ sta inless steel, if necessary
trim
Paint
P aint dam age Re fer to the p aint num be r on the veh icle d ata lab el, re -
pair wi th tou ch up pa in t ¢
page 261
Spilled fuel Rinse with water immediately
Rust fi lm R
ust film remover, t hen protect wi th hard wax; for q ues -
tions, refe r to an a uthorized Audi dea ler or q ua lified
workshop
Corrosion Have it removed by an autho rized Aud i deale r or quali-
fied workshop
Water no longer Protect with hard wax (at least twice per year)
beads on the surface
of clean paint
No sh ine even T
reat w ith sui table polis h; then app ly paint pro tectant if
though paint has the polish that was used does not contain any protec-
been p rotected/
tant
pa int loo ks poo r
D eposi ts such as in- Dampen wi th w ater immed iate ly and remove wi th a mi-
sec ts, bird drop -
crofiber clot h
pings, t ree sap and
road salt
Grease-based con- Remove immediately with a mild soap sol ution a) and a
tam inants such as soft cloth
cosmetic s or sun-
b lo ck
Carbon parts Dirty Clean tlhe same way as painted parts¢ page 184, Car
washes
al M ild soap solution : max imu m two tablespo ons neutral soap in 1 quar t (1 liter) of water
Cleaning interior
Component Situation Solution
Windows
Dirty Glass cleaner, then w ipe d ry
Decorat ive Dirty Mild soap solutional
parts/
trim

190 Fuel supply and filling your fuel tank
Fuel supply and filling
your fuel tank
Gasoline
Fuel supply
Using the righ t fuel helps keep the environ­
ment cle an and preven ts engine dam age .
Fuel recommendation
The fuel recomme nded for you r vehicle is un­
lead ed premium
g rade gasoline . Audi recom­
mends using TO P TI ER D ete rgent Gaso line
wi th a minimum oc tane ra ting of 91 A KI ( 95
RON ). For more informa tio n o n TO P TIE R De­
tergen t Gasoline, please go to the off icia l
website (www .to ptiergas .com) .
Th e re commended gasoline o ctane rating for
your eng ine can also be fo un d o n a label loc at­
ed on the ins ide of the fue l filler flap . This ra t­
in g may be specified as AKI or RON.
Your veh icle may also be operated using un­
l e ad ed regular g asoline with a min imum o c­
tane rating o f 87 AKI/9 1 RO N. H owever, using
87 AKI/91 RO N octane fue l w ill slightly re­
d uce eng ine perfo rmance .
Use unleaded ga soline only. Unleaded g aso­
li ne is availab le th rougho ut the USA, Canada,
and in most E uropean countries . We recom­
mend that you do not ta ke yo ur vehicle to
areas or countries where unleaded gasoline
may not be ava ilable.
F or mo re informat io n on refue ling your ve hi­
cle, see
¢ page 191.
Octane rating
Octane rating ind icates a gaso line' s abili ty to
r es ist eng ine da mag in g "kno ck" cau sed b y
p rem ature ign ition and detona tion. Therefore,
b uying the correct grade of gasoline is very
important to he lp prevent possible engi ne
damage and a loss o f engine performance.
Gasoline mos t commonly used in the Unite d
States an d Canada has the following octane
rat ings that can usually be fo und on the filler
p ump : -
Premium Grade: 9 1 -96 AKI
- Regular Gra de: 87 -90 AKI
Explanation of the abbreviations:
AKI = Anti Knock In d ex = (R+ M)/2 = (RO N
+ MO N)/2
R ON = Research Octane Number
MON = Moto r Octane Number .
@ Note
-Do not use a ny fue l w it h octane rat ings
lower tha n 87 A KI or 9 1 RO N othe rwise
ex pensive eng ine da mage w ill occu r.
- Do
not use lea ded gasoli ne. The use of
leaded g asoline w ill sev ere ly damag e
yo ur vehicle's ca ta lytic converter a nd its
a bi lity to cont rol exh aust emis sions.
Blended gasoline
Use of gasoline containing alcohol or
MTBE (methyl tertiary butyl ether )
You may use unleaded gasoline blende d with
alcohol or MTB E (commonly referred to as
oxygenates) if the blended m ixture meets t he
fo llow ing c riteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol )
-Anti -kno ck index mus t be 87 A KI or higher .
- Blend mus t contain no more t han 3% me th-
a nol.
- Blend must contain mo re than 2% co-sol -
ve nts .
Blend of gasoline and ethanol (grain alcohol
or ethyl alcohol)
- Anti-knock index must be 87 AKI or higher.
- Blend must not conta in mo re than 10%
ethanol.
Blend of gasoline and MTBE
- Anti -kno ck index mus t be 87 A KI or higher.
- Blend must contain not mo re than 15%
M TB E.
Seasonally adjusted gasoline

M N
er
u..
co ,...., \!) ..,.,
,...., ..,., ,....,
Many gasoline grades are blended to perform
especia lly we ll for winter or summer driving.
During seasonal change-over , we suggest that
you fill up at busy gas stations where the sea­ sonal adjustment is more likely to be made in
time.
Q;) Note
- Methanol fuels which do not meet these
requirements may cause corrosion and
damage to plastic and rubber compo ­
nents in the fuel system.
- Do not use fuels that fail to meet the
spec ified criter ia in this chapter .
- If you are unable to determine whether
or not a particular fuel blend meets the
spec ificat ions, ask your service station or
i ts fuel supplier .
- Do not use fuel for which the contents
cannot be identified.
- Fuel system damage and performance
problems resulting from the use of fuels
different from those specified are not
the respons ibility of Audi and are not
covered under the New Vehicle or the
Emission Control System Warranties.
- If you experience a loss of fue l economy
or driveability and performance prob­ l ems 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 manufac­
turers is carbon deposit build-up caused by
the type of gasoline you use .
Although gasoline grades differ from one manufacturer to another, they have cer tain
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. Although most gasoline
brands include additives to keep engine and
fuel systems clean, they are not equally effec­
tive.
Fuel supply and filling your fuel tank 191
Audi recommends using TOP TIER Detergent
Gasoline . For more information on TOP TIER
Detergent Gasoline, please go to the official
website (www .toptiergas .com) .
After an extended period of using inadequate
fuels, built -up carbon deposits can rob your
engine of peak performance.
CJ) Note
Damage or malfunction due to poor fuel
quality is not covered by the Audi New Ve­
hicle Limited Warranty.
Fuel tank
Fuel filler neck
The fuel filler neck is located on the right rear
s ide panel behind the fuel filler flap.
If the power locking system should fail, you
can still open the flap manually -for detailed
instructions see
~ page 193.
You can find the fuel tank capacity of your ve ­
hicle in
~page 262 .
The label on the inside of the fuel filler flap
tells you the correct fuel for your vehicle. For
more information about fuel specifications,
see
~ page 190 .
Your vehicle fuel tank has an on-board refuel­
ling vapor recovery system. This feature helps
to prevent fuel vapors from escaping from the
tank and pollut ing the environment while you
refuel your vehicle. In order to fill the tank
properly while protecting the environment,
please follow this refueling procedure careful­
ly.
A WARNING ~
Under normal operating conditions, never
carry additional fuel containers in your car.
Gas canisters and other containers used to
transport fuel can be dangerous. Such con­
tainers, full or empty, may leak and could
cause a fire in a collision . If you must
transport fuel to use for your lawn mower, ..,.
•
•

192 Fuel suppl y and filli ng your fuel t ank
snow blower, etc., be very careful and al­
ways observe local and state laws regard­ ing the use, transportat ion and storage of
such fuel containers . Make certain the con­
tainer meets industry standards (ANSI/
ASTM F852 -86) .
(D Note
Never drive your vehicle unt il the fuel tank
is completely empty . The irregular supply
of fuel can cause misfiring. Gasoline could
enter the exhaust system and damage the
catalyt ic converter.
Refuelling
Fig. 168 R ig ht rea r ve hicle s ide: Open ing th e f uel fille r
fl ap
Fi g. 16 9 Fu el filler fla p w it h attac hed fuel c ap
When activ ati ng the central locking, the f uel
fi ller flap is au tomatically un locked or loc ked.
Refue l the vehicle with the ign ition turned
off .
Tak ing th e fu el cap off
• Turnoff the ignit ion .
• Press the left side of the fue l filler flap to
open it
~ fig. 168 -a rrow- .
• Unsc rew fuel c ap counter-clockwise and
hang it on the fuel fille r flap
~ fig. 169. Refuelling proc
edur e
• Insert the fuel nozzle from the gasoline
pump into the fuel fille r neck as far as it wi ll
go .
• Select a med ium r efuelling rate so that the
no zz le switches off automatically when the
tank i s full.
Putting the fu el cap back on
• After fi lling your tank, twist the fuel cap
clockwise as far as it will go .
• Close the fue l filler flap.
T o avoid fuel spilling or evaporating from the
fuel tank always close fuel cap properly and complete ly .
A WARNING
-
Improper refue ling or handling of fuel can
cause fire, explosion and severe burns.
- Fue l is highly flammable and can cause
severe burns and other injur ies.
- Failure to shut the engine off while refu­
eling and/or to insert the pump nozzle
fully into the fuel filler neck could cause
fuel to spray out of filler neck or to over­
flow . Fuel spray and overflowing fuel can
cause a fire .
- Never use a cellular telephone while re­
fueling . The electromagnet ic rad iat ion
can cause sparks that can ignite fuel va­
pors and cause a fire .
- Never get back into your vehicl e white re­
fue ling .
If in exceptional circumstances
you mu st get back in your vehicle while
ref ueling, make ce rtain that you close
the door and touch metal to discharge static electricity before touching the fill­
er nozzle again. Static e lectricity can
cause sparks that can ignite fuel vapors
re leased during ref ueling .
- Never smoke or have an open f lame any­
where in or near y our veh icle when refu­
eling or filling a portab le fuel conta iner.
- For your safety, we strongly recommend
that you do not travel with a portable

"' N
a: LL co
rl I.O
"' rl
"' rl
fuel container in your vehicle. The con­
tainer, full or empty may leak and co uld
cause a fire, especially in a crash.
- If, under exceptional circumstances, yo u
must transport a portable fuel container,
please observe the following:
- Never fi ll a po rtable fue l container
while it is anywhe re in or on the vehicle
(for examp le, in the luggage compar t­
ment, or on the tr unk). Static electric i­
ty can bui ld up while fi lling and can ig­
n ite fue l vapors causing a fire .
- Always p lace a portable fuel container
on the gro und before filling.
- Always keep the fi ller nozzle comp lete­
ly inside the po rtable conta iner before
and during filling.
- If filling a portable container made of
metal, the filler nozz le must always be
in contact with the container. Th is w ill
he lp prevent static electricity from dis­
charging and cause a fire .
- Never sp ill fuel inside the vehicle or
luggage compartment. Fue l vapors are
h ighly f lammable .
- Always observe local and state/provin­
cial laws regarding the use, storage
and tra nsporta tion of fuel co ntainers .
- Make certai n the fuel container meets
industry standards (ANSI/ ASTM
F852 -86) .
(D Note
If any f uel has spilled onto the car, it
should be removed immediate ly to prevent
damage to the paint.
~ For the sake of the environment
As soon as the correctly operated nozzle sw itches off automatically fo r the fi rst
time, the tank is full. Do not try to add more fue l because fue l may spill out . In
add it io n, th e expans ion space in the fuel
t ank will be fi lled -cau sing the fue l to
overflow whe n it be come s w arm and pol ­
lu te the env iro nment.
Fu el suppl y and filli ng your fuel t ank 193
@ Tips
- Running your eng ine whi le refue lli ng
may cause vapors to escape or even
cause fuel to sp ill out of the tank. T his
would then shut off the fuel nozzle be­
f o re the ta nk is f ull.
- Do not refuel your vehicle with the ign i­
tion turned o n. The fuel gauge may oth­
erwise not indicate the correct f uel level
after refuelling .
- The fue l filler flap of yo ur vehicle is not
locked when you lock t he veh icle from
t he insid e.
Unlocking the fuel filler flap
by hand
You can open the fuel filler flap by hand if the
power locking system should fail .
Fig. 1 70 Luggage compa rtme nt: ope ning th e side trim
Fig . 1 71 Luggage co mpa rtme nt: Eme rgency ope ning
of fue l fil le r flap
The emergency opening mechanism is located
behind the right side trim panel in the lug­
gage compartment .
Opening the side trim .,. Insert a tool such as a screwdriver
¢
page 242 or the emergency key into the
r ight side of the upper gap¢
fig. 170 . .,.

194 Fuel supply and filling your fuel tank
• Pry upward to re lease the trim .
Fuel filler door emergency release
• Loos en the strap from its bracket and pull
on it ~
fig. 171. You can now open t he fue l
filler fl ap a s usual
¢page 19 2.