2015 AUDI A8 fuel

7 2 Seats and storage
-For safety reasons, do not transport
more than two pairs of skis in the ski
sack.
- You must secure the ski sack with the
strap after loading.
- Make sure all objects that you are trans­
porting in the pass-through are secured.
Otherwise they could slide around during
sudden braking maneuvers and cause in­
jury.
Q) Tips
- Never stow the ski sack away when it is
still wet or damp (for example, snow
melting from skis). Allow it to dry com­
pletely before stowing it away .
- Position skis in the ski sack with the
pointed ends facing the front and ski
poles with the pointed ends facing the
rear.
Roof rack
Description and mounting locations
Additional cargo can be carried with a roof
luggage rack.
Fig. 77 Roof rack attac hment points
,. Always read and follow the instructions pro­
vided by the roof rack manufacturer when
installing the roof rack system .
If luggage or cargo is to be carried on the
roof, you must observe the following:
- To enhance the vehicle's streamlined design,
rain gutters have been molded into the roof.
It is not possible to use normal roof racks.
Only install a roof rack specifically designed for your model AB. Contact the nearest Audi
dealer for information on approved modular
roof racks for your vehicle.
- Only use roof racks approved for your vehi­
cle. These approved roof racks are the basis
for a complete roof rack system. Additional
attachments or carrier systems are needed
to transport luggage and sports equipment.
We recommend using roof racks from the
Audi original accessories program .
- When installing the roof rack, make sure it
is only mounted on the designated locations
on the roof~
fig. 77 .
- We recommend that you keep the installa­
tion instructions for your roof rack system
together with your Owner's literature in the
vehicle .
When should the roof rack be removed?
-Before going through an automatic car wash
(it is best to ask the car wash operator for
advice)
- When not in use, to reduce fuel consump­
tion, wind noise and to guard against theft .
8,. WARNING
-Use of an unapproved roof rack or incor­
rect mounting of an approved roof rack
can cause the roof rack or the items at­
tached to it to fall off the roof onto the
road.
- Objects falling from the roof of a vehicle
can cause a crash and personal injury.
- Only mount the roof rack on the desig­
nated locations on the roof¢
fig. 77.
- The roof rack system must be installed
exactly according to the instructions pro­
vided.
- When driving with a roof rack system,
changes to the center of gravity and wind
resistance can change the vehicle han­
dling and lead to a collision. Always
adapt your driving and your speed to the
current conditions.
-

,....,
N ,....,
N
0 J:
'SI: ,...., \!) 1.1"1 ,...., 1.1"1 ,....,
(D Note
-Your vehicle warranty does not cover any
damages to the vehicle caused by using
roof racks or mount ing structures not
approved by Audi for your vehicle . The
same applies to damage resulting from i ncorrect roof rack installation .
- Always check the roof rack mountings
and hardware before each trip and dur ­
i ng a tr ip to make sure everythi ng is se­
curely tightened. If necessary, retighten
the mount ings and check the ent ire sys­
tem from t ime to t ime.
- After mounting a roof rack system, or
when you transport objects on the roof
of your veh icle, the height of the vehicle
is natura lly increased . Be careful when
driving under low bridges or in parking
garages for example. This could ca use
damage to the load and even the vehicle
i tself.
- Make sure the open rear lid and the sun­
roof* do not come into contact with the
roof rack .
Loading the roof rack
Always distribu te loads evenly. Make sure
any thing on the roof rock is securely tied
down .
.. Always distribute the loads on the roof rack
evenly .
.. Always attach items to the roof rack securely
before you drive off .
The maximum perm iss ible roof weight is
220 lb (100 kg ). The roof weight is the to tal
of the weight of the roof rack, the attach ­
ments and the cargo you are carrying . You
must also not exceed the maximum load
weight for the roof rack you are using.
When us ing a roof rack system which has a
lower load carry ing capac ity, you must not use
up the total max imum pe rm iss ib le load ca rry­
ing capacity specified above. I nstead , you
should lo ad the roof rack sys tem only to the
S eat s an d sto rage 73
maximum capacity specified by the manufac ­
turer of the roof rack syst em.
A WARNING
Weak , damaged or improper straps used
to secure items to the roof rack can fail
during hard braking or in a coll is ion and
cause ser ious persona l injury .
- Make sure the roof rack is installed exact­
ly as specif ied above
c> poge 72.
-Always use s uitable mount ing straps for
secur ing items to the roof rack to help
prevent items from sh ifting or flying for ­
ward .
- Items on the roof rack must always be
securely mounted .
- The use of a roof rack can negat ively af­
fect the way a veh icle hand les . Cargo
that is large, heavy, bulky, long or flat
will have a greater negat ive infl uence on
the vehicle's aerodynamics, center of grav ity and overall handling. Always
drive s lowly, avoid s udden braking and
maneuvers when transporting cargo on
the roof of your vehicle.
- Never exceed the maxim um permissible
load carrying capacity of the roof of your
vehicle, the permissible axle weights and the permissible total weight of your vehi­
cle
c> page 287, Weights.
@ For the sa ke of the environment
As a result of the increased wind resist­
ance created by a roof rack, your vehicle is
u s ing fuel unnecessarily . So remove the
roof rack after using it .

78 Warm and cold
Warm and cold Climate controls
Description
The climate control system warms, cools and
adds humidity to the air in the vehicle interior.
It is the most effect ive when the windows and
sunroof* are closed . If the temperature inside
the parked vehicle becomes very warm, open­ ing the window briefly will speed up the cool­
ing process.
I n all heating mode functions except
defrost,
the blower on ly switches to a higher speed
once the engine coolant has reached a certain
temperature.
Condensation from the cooling system can
drip and form a puddle of water under the ve­
hicle. This is normal and does not mean there
is a leak.
Pollutant filter
The pol lutant filter removes pollutants such
as dust and pollen from the air.
The air pollutants filter must be changed at
the intervals spec ified in you r Warranty
&
Maintenance booklet, so that the air condi­
tioner can properly work.
I f you drive your vehicle in an a rea with high
a ir po llution, the fi lter may need to be
changed more frequent ly than specified in
your Aud i Warranty
& Maintenance booklet. If
in doubt, ask your authorized Audi Service Ad­
visor for advice .
Key coded settings
The climate control settings are a utomat ically
stored and assigned to the remote control key
that is in use.
A WARNING
Reduced visibility is dangerous and can
cause accidents. -
- For safe driving it is very important that
all windows be free of ice, snow and con­
densation.
- Comp letely familiarize yourself with the
proper use and funct ion of the heat ing
and ventilation system and especially how to defog and defrost the windows.
- Never use the windshield wiper/washer
system in freez ing weather unt il you
have warmed the windshield first, using
the heating and ventilation system. The
washer solution may freeze on the wind­ sh ie ld and reduce visib ility.
(D Note
- If you suspect that the air conditioner has been damaged, switch the system
off to avoid further damage and have it
inspected by a qualified dealership.
- Repairs to the Audi air conditioner re­
quire special technical know ledge and
special tools. Contact an authorized Aud i
dea ler fo r assistance.
@ For the sake of the environment
By reducing the amount of fuel you use,
you also reduce the amount of pollutants
emitted into the air.
(D Tips
- Keep the air intake s lots (in fro nt of the
w indshield) free from ice, snow and de ­
bris in order to maintain the proper func­
tion of the climate control system.
- T he energy management system may
switch the seat heating* or rear window
defroster off temporari Ly . These systems
are available again as soon as the energy
balance has been restored.
- Air escapes through vents under the rear
window. When placing items of clothing
on the luggage compartment cover, en­
sure that the openings are not covered.

,....,
N ,....,
N
0 J:
'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
Starting off with a trailer
To prevent rolling back unintentionally on an
incline, do the following:
11-Keep the switch© pulled and depress the
accelerator. The parking brake stays applied
and prevents the vehicle from rolling back­
ward .
11-You can release the switch<®> once you are
su re that you a re develop ing enough for­
ward momentum at the wheels as you de­
press the accelerator.
D epending on the weight of the r ig (vehicle
and tra ile r) and the severi ty of the incl ine, you
may roll backwards as you start. Yo u can pre­
vent rolling backwards by holding the parking brake switch<®) p ulled out and acce lerating -
just as you would when starting on a hill with
a conventional hand brake.
Emergency braking
In the event that the conventional brake sys­
tem fails or locks.
11-In an emergency, pull the switch(®) and
contin ue to p ull it to slow your vehicle down
with the parking brake.
11-As soon as you release the switch (®) or ac-
ce lerate, the braking process stops.
If you pull the switch<®> and hold it above a
speed of about 5 mph (8 km/h), the emergen­
cy braking function is initiated. The vehicle is
braked at all four wheels by activating the hy­
draulic brake system. Th e brake performance
i s similar to making an emergency stop
~ &..
In order not to activate the emergency brak­
ing by m istake, an audible warning tone (buz­
ze r) sou nds when the switch C®> is pulled. As
soon as the switch(®) is released, or the accel­
e rator pedal is dep ressed, emergency b ra ki ng
stops.
_& WARNING
Emergency braking should only be used i n
an emergency, when the normal foot brake
has failed or the brake pedal is obstructed .
On the ro ad 87
Using the parking b rake to pe rform emer­
gency brak ing will slow your vehicle down
as if you had made a full brake application.
The laws of physics cannot be suspended
even with ESC and i ts associated compo­
nents (ABS, ASR, EDL). In corners and
when road o r weathe r cond itions are bad,
a full brake appl ication can ca use the vehi­
cle to sk id or the re ar end to break away -
risking an acciden t.
Start-Stop-System
' Description
Applies to vehicles: wit h Start -Stop-System
The Start-Stop-System can help increase fuel
economy and reduce CO2 emissions .
In the Start-Stop-mode, the engine shuts off
automat ica lly w hen the vehicle is stopped,
such as at a traffic light. The ignition remains
switched on du ring this stop phase. The en­
gine wi ll be automat ica lly restarted when
needed.
The last Start-Stop-System sett ing (on/off us­
ing the button
I O\l ~I) will be restored when the
i gnition is turned on. The L ED in the
1(7() .. 1 but­
ton turns on when the Star t-Stop-System is
swi tched off man ually.
Basic requirements for the Start -Stop
mode
- The d rive r's doo r is closed.
- The d river ' seat belt is latched .
- The hood is closed .
- The vehicle must have been driven faster
than
2.5 mph (4 km/h) since the last stop.
- A trailer is not hitched to the vehicle.
_& WARNING
-Never let the vehicle roll with the eng ine
sw itched off. You cou ld lose control over
the vehicle. Th is can lead to a collision
and serio us in ju ries.
- The brake booster and the steering sup­ port do not work while the engine is

114 Automatic Transmission
Automatic
Transmission
tiptronic (8-speed
transmission)
Introduction
Your vehicle is equipped with an electronically controlled 8-speed automatic transmission .
Upshifting and downshifting occurs automati­
cally and is controlled electronically. The driv­
ing style continuously influences the selection
of the driving program .
When a
moderate driving style is used, the
transmission selects the most economical
driving mode. It will then change up early and
delay the downsh ifts to give better fuel econ­
omy .
The transmission switches to a sporty mode
after a kick-down or when the driver uses a
sporty driving style characterized by quick ac­
celerator pedal movements, heavy accelera­
tion, frequent changes in speed and traveling at the maximum speed.
If desired, the driver can also select the gears
manually (ti ptronic mode) ¢ page 117 .
Indicator in the display
Fig. 123 Display: selector lever posit io n
@ -The current selector lever position is dis­
played continuously. The gear is also dis­
played in manual mode M.
@ -This indicator appears temporarily if you
change the selector lever position or if you
press the button on the selector lever ¢
page 114, fig. 124
. The current selector
lever position is shown with a white back­
ground.
Selecting a selector lever position
Fig. 124 Selector lever
---p--- ---1
--- R--- --1
--- N--- --t
-D/S--
Fig. 125 Pressing the button o n the selector leve r
The current selector lever position is displayed
on the selector lever¢
fig. 124.
.. You may need to release the se lector lever
lock depending on which selector lever posi­
tion is selected and which one you would
like to select¢
page 115, Selector lever
lock .
.. To engage the nearest selector lever posi­
tion, move the selector lever forward/back
until you fee l the first pressure point. The
selector lever will return to its original posi­
tion .
.. To skip over one (or two) selector lever posi­
tions, move the selector lever past the first
(and second) pressure point into the desired
position. The selector lever will return to its
original position.
For example, to move directly from the D se­
lector lever position to P when stopping the
vehicle, you can shift past the N and R selector lever positions. ..,_

206 Driving and en vir onm ent
Catalytic converter
Appl ies to vehicles: with gasoline e ngin e
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 i=> page 220,
Fuel supply .
.. Never run the tank down all the way to emp-
ty .
.. Never put too much motor oil in your engine
¢ page 234, Adding engine oil .. Never try to push- or tow-start your veh icle.
The catalytic converter is an eff ic ient "clean­
up" device built into the exhaust system of
the vehicle. The catalyti c converter burns
many of the pollutants in the exhaust gas be­
fore they are released into the atmosphere.
The exclus ive use of unleaded fuel is cr itically
important for the l ife of the cata lytic convert­
e r and proper functioning of the engine.
A WARNING
T he temperature of the exhaust system is
high, both when driving and after stopping
the engine .
- Never touch the exhaust tail pipes once
they have become hot. This could result
in burns.
- Do not park or operate the vehicle in
areas where the hot exhaust system may
come in contact with dry grass, brush,
fuel spill or other material which can
cause a fire.
- Do not apply additional undercoating or
rustproofing on or near the exhaust
man ifold, exhaust p ipes, catalytic con­
verter or heat shields . During driving, the
substance used for undercoating cou ld
overheat and cause a fire.
@) Note
- Be aware that just one tank f illing with
leaded fuel will al ready seriously de­
grade the perfo rmance of the cata lytic
conve rter. -
Do not exceed the correct engine oil level
i=>page 234.
-Do not drive until the fue l tank becomes
completely empty . The engine co uld m is­
fire . Unburned fuel could also get into
the exhaust system and this cou ld cause
the catalytic converter to overheat.
- Do not switch off the ignition while the
vehicle is mov ing .
- Do not continue to ope rate your vehicle
under these conditions, as otherwise fuel
can reach the catalyt ic converter. Th is
cou ld result in overheating of the con­
verter, requir ing its replacement .
- To assure efficient operation of the Emis­
sion Control System:
- Have you r vehicle maintained p roperly
and in accordance w ith the service rec­
ommendations in your Warranty & Maintenance book let.
- Lack of prope r maintenance as we ll as
improper use of the vehicle wi ll impair
the function of the em ission contro l
system and could lead to damage.
@) For the sa ke of the en vironment
Even when the Emission Control System is
ope rat ing properly, the exhaust gas can
have a sulfur-like exhaust gas smell under
some operat ing states. This depends on
the sulfur content of the fuel being used .
Usi ng a different brand of fuel may help,
or f illing the tank with lead-free super
grade gasoline.
Diesel particulate filter
Applies to vehicles: with diese l eng ine
The diesel part icu late filter filters nearly all of
the soot pa rticles out of the exhaust . T he fil­
te r cleans itself automat ica lly unde r no rma l
dr iv ing cond itions . If the filte r cannot clean it­
self (for example, because you are on ly driving
short distances), the filter becomes clogged
with soot and the
Cl symbol for the diese l
particulate filter i lluminates
i=> page 21. ..,.

,....,
N .... N
0 J:
'SI: .... \!) ..,.,
.... ..,., ....
A WARNING ,~
- Do not park your vehicle over flammable
materials such as grass or leaves because
the high temperature of the diesel par­
t icu late filter cou ld start a fire .
- Do not apply an underbody protectant in the exhaust system area or a fire could start .
Shutting down vehicle
If you would like your veh icle to remain inop ­
erat ive for a longer period of time, contact an
Aud i or other specia lized dealer. They can ad­
vise you on necessary precautions e.g . corro­
sion prevention, ma intenance and storage.
Pay attention to additiona l information con­
cerning the battery. Refer to~
page 240.
Avoid damaging the
vehicle
When you a re driving on poor roads, or over
curbs, steep ramps, etc., make certain that low-lying parts such as spoilers and exhaust
system parts do not bottom out and get dam­
aged.
This is especially true for vehicles with low­
slung chassis (sports chassis)* and fully load ­
ed vehicles.
Driving through water
on roads
Note the following to avoid vehicle damage
when driving through water, for example on
flooded roads :
- The water must not be any higher than the
bottom of the veh icle body.
- Do not drive faster than wa lking speed.
A WARNING
After driving through water, mud, slush,
etc., the brakes may be slow to take effect
because of wet brake rotors and pads. Dry
-
Drivin g and environment 207
the brakes first by braking carefully to re­
store the full braking effect.
(D Note
- Vehicle components such as the engine,
transmission, suspension or electrical
system can be severely damaged by driv­
ing through water.
- Always switch off the Start-Stop-System*
when driving through water
~ page 87.
(D Tips
-Check the depth of the water before driv­
ing through it .
- Do not stop the vehicle, drive in reverse
or switch the engine off when driving
through water.
- Keep in mind that oncoming vehicles may create waves that raise the water
level and make it too deep for your vehi­
cle to drive through safely .
- Avoid driving through salt water because
it can cause corrosion.
Operate your vehicle
economically and minimize pollution
General
Your personal style of driving will determine
t he economy of your vehicle , as well as ex­
haus t and noise levels.
Fuel economy, environmental impact, and
wear on your engine, brakes and tires largely
depend on three factors:
- your personal driving style
- operating conditions
- technical limitations
If you ant icipate 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. •
•

208 Driving and en vir onm ent
The consumption estimates as published
by ENVIRONMENTAL PROTECTION AGENCY
(EPA) and Transport Canada may not corre­
spond to your actual consumption on the
road, which will vary depending upon vehi ­
cle load and speed, road and weather con­
ditions, tr ip 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 fuel when they are ac­
celerating . If you anticipate what is going to
happen next, you will need to brake less and,
thus , accelerate less. Let the vehicle coast
whenever poss ible -for example when you see
that the next traffic l ight is red.
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 .
Fuel consumption, exhaust emissions and en­
g ine noise increase d isproportionately at high
speeds. If you dr ive at approximately three
quarters of top speed, fue l consumption will
be reduced by one half. Neve r dr ive faste r
than the posted speed limit and wea ther 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 vehicle by letting the
engine run at id le .
T he id ling phase is automatically red uced for
vehicles with the Start -Stop -System*. It is ef ­
ficient to switch off the engine in vehicles
without the Start -Stop-System when stopped
at rai lroad crossings and long red lights . Turn­
ing the engine off for just 30-40 seconds
saves more fuel than is burned by starting the engine aga in .
It takes a long time for the engine to warm up
fully when it is running at idle. However, wear
and noxious emissions are espec ially high
when the eng ine is warm ing up . So you should
drive away as soon as you start the engine and
avo id running at high rpms while the engine is
still warming up.
W Note
Do not leave engine idling unattended af­
ter start ing . If wa rning lights should come
on to indicate improper operation, they
wo uld go unheeded. Ex tended idling also
produces heat, wh ich could result in ove r­
heating or other damage to the ve hicle or
other property .
Regular maintenance
A badly tuned engine unnecessarily wastes a
lot of fuel.
• Have your veh icle serviced at reg ular in ter -
vals .
By having your ve hicle regu la rly se rviced by an
Audi dealer he lps to ensu re that it runs p rop ­
erly and economically . The condition of your
vehicle not only affects its safety and ability to
ho ld its va lue, it also affects
fuel con sump­
tion .
Ch eck your oil e ach time you
fill y our 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 . ..,.