2018 AUDI A8 fuel consumption

Cockpit overv iew
(D G!J Button
- Repeating th e la st na vig ation prom pt :
press
the
[J] button.
- Changing the voice guidance volume : turn the
right thumbwhee l up o r down dur ing vo ice
guidance.
@ 51 Button
- Switching the voi ce reco gnition syste m* on :
press the 5J button briefly on the multifun c­
tion s teer ing whee l. Say the desired command
after the
Beep.
- Switc hing th e voice re cogniti on sys tem * off :
press and hold the 51 butto n. Or : say the com­
mand
Cancel.
For mo re information abo ut the vo ice recog nition
system, see
¢ page 142.
@ Right thumbwheel
You can adjust the vo lume of an audio source or a
system message (for example, from the voice recognit ion system*) when the sound is playing.
- In crea sin g or d ecreasing the volume : turn the
right thumbwhee l up or down .
-Mut ing o r pausing : turn the right thumbwheel
down.
Or : press the right thumbwheel.
-Un mut ing o r resum ing : turn the right thumb­
whee l up .
Or: press the right thumbwheel.
© Manua l shift ing
See q page 86.
Driver information
system
On-board computer
F ig . 8 Instrument cluster: fuel consumpt ion d isplay
12
You can call up the fo llowing info rmat ion in the
on-board computer:
- Da te
- Dr iv ing t ime from the short-te rm memory
-Average consumption from the short -term
memory
- Average speed from the short-term memory
- Distance driven from the short-term memory
- Current fuel consumption
- Short-term memory overv iew
- Long -te rm memory overv iew
The short-term memory collects drivi ng informa­
tion from the time the ignition is switched on un­
ti l it is switched off . If you continue driving with­
i n two hours after switch ing the ignit ion off, the
new values are included when ca lculating the cur­
rent trip information.
Un like the sho rt -term memory, the long-term
memory is not erased automatically. You can se­
l ect the time period for evaluating trip informa ­
tion yourself .
Fuel consumption
The current f uel consumption can be shown us­
i ng a bar graph ¢
fig. 8. The average consump­
tion stored in the short-term memory is also d is­
played. If the bar is green, your vehicle is sav ing
fuel through one of the following functions :
-Rec uperation : electrical energy can be stored in
the vehicle battery when the vehicle is coast ing
or driving down hill. T he bar will move toward
0.
-Cy linder on demand system*: the engine auto­
matically switches four cylinders (4 .0L TFSI) or
six cylinders (6.3L FSI) off when lower power
output is required and other conditions are
met. Th is change is not noticeable to the pas­
sengers . The cylinders w ill switch on aga in
when higher power output is needed .

lL t:0 ....
"' " "' .... 0 0 :c ' Efficiency program
Applies to: ve hicles with effic ie n cy program
Fig. 9 Instrument cluster : en ergy consumers
Fig. 10 Inst rument cluster: economy t ip
The efficiency program can help you to use less
fuel. It shows other consumers that are us ing
fuel and economy tips give advice on how to drive
efficiently. The efficiency prog ram receives dis­
tance and cons umption data from the on-board
computer.
To disp lay the efficiency program, open the
Vehi­
cl e fun cti ons
menu and se lect the Efficien cy pr o­
gram
menu item .
Other consum ers
The Energ y con sum ers view lists other equip­
ment that is currently affecting fuel consump­
tion. The display shows up to three other equip­
ment items
@ c:::> fig. 9. The equipment using the
most power is listed first. If more than three
items using power are sw itched on, the equip­
ment that is currently using the most power is
displayed.
A gauge @also shows the current total con­
sumpt ion of all other consumers.
Coc kpit o verview
E conom y tips
In certain situations, economy tips appear auto­
matically for a short time in the efficiency pro­
gram
c:::> fig. 10 . If you follow these economy tips,
yo u can reduce your vehicle's fuel consumption.
T o turn an economy tip off immediately after it
appea rs, press any button on the mu ltifunction
steering wheel.
(D Tips
- If
you erase the data in the eff icien cy pro­
gram, the va lues in the on-board computer
w ill also be reset.
- Once yo u have turned an economy tip off, it
will only appear again after you turn the ig­
nition on again.
- T he economy tips are not disp layed in
every
instance, but rather in interva ls over a peri­
od of time .
Radio
Applies to: vehicles wit h mult ifu nction stee rin g w hee l
Fig . 11 Radio me nu
Requirement: radio mode must be started
c:::> page 178 and the radio/media tab must be
displayed.
.,. Press the ~ button on the multifunction steer­
ing wheel.
- Sele cting the fr equenc y band : select and con­
fi rm a frequency band.
- Select ing a sta tion from th e statio n list: select
and confirm a radio station.
- Sel ect ing a stat ion fr om th e pre set s l is t : select
and confirm
Pre sets and then select a radio sta­
tion .
13

Drivin g
-Avoid driving through sa lt water, because
this can cause corrosion .
Economical and environmentally-friendly
driving
The amount of fuel consumption, the env iron­
mental impact and the wear to the engine,
brakes and t ires depends mostly on your dr iv ing
style. W it h an anticipatory and economic dr iv ing
style , fu el consumption can be reduced by ap ­
p roximate ly 10 -15% . The following tips wi ll help
you conserve the environment and your money at the same time .
Anticipatory driving
A veh icle uses the most fuel when acce le rating.
When you dr ive with ant ic ipat io n, you do no t
need to brake as often and so you accelerate less .
When possib le, let your vehicle coast with a
gear
eng aged ,
for example, when you notice that the
next traffic light is red. This produces an engine
braking effect, which helps to protect the brakes
and tires and reduces the emissions and fuel con­
sumpt ion to zero (fuel shut -off during decelera­
tion) .
Shift efficientl y
Upshifting earlier is an effective way to save fuel.
Staying in a gear too long uses fue l unnecessari­
ly . Press down on the accelerator pedal slowly
and avoid "k ick-down" .
Avoid full accel eration
You shou ld rare ly trave l at the maximum vehicle
speed. High speeds cause a disproportionately h igh increase in fuel consumption, emissions and
traffic no ise . Slower driving saves fuel.
Reduce idlin g time
The Start/Stop system* he lps to reduce the idling
time automatically. In vehicles without the Start/
Stop system*, it is efficient to switch the eng ine
off when stopped at ra ilroad crossings and long
red l ights . Stopp ing the engine for 30 -40 sec­
onds already saves more fuel than the amount of
ext ra fuel needed to resta rt the eng ine.
74
It takes a ve ry long time in id le to warm the en­
gine up to operating temperature. Wear and
emissions are especially high in the warm -up
phase. Therefore, you shou ld begin driving im­
med iate ly after starting the engine. Avoid high
RPMs while doing this .
Hav e maintenance perfo rmed regul arly
By having maintenance performed reg ularly on
your vehicle, you can help to reduce fuel con­
sumption before you even start to drive. The maintenance condition of your vehicle not on ly
affects traffic safety and long-term value but al­
so impacts fuel consumpt ion. A poorly main­
ta ined engine can lead to fuel consumpt ion that
i s 10% hig he r th an no rma l.
Avoid short trip s
The engine and exhaust cleaning system must
reach their optimal operat ing temperature to ef­
fect ively reduce consumpt ion and emissions .
A cold engine uses a d isproportionately high
amount of fuel. The engine reaches operat ing
temperature and consumption normalizes only
after approximately 2 .5 m iles (4 km) .
Check the tire pressu re
To save fue l, make sure the t ires are always in­
flated to the correct pressure
¢ page 291. The
fuel consumpt ion can increase by 5% if the pres­
sure is only 0 .5 bar too low . Due to the increased
r oll ing resistance, low tire p ressures w ill also
l ead to greater tire wear and will affe ct driv ing
behav ior.
Drive w ith summer tires when poss ible because
t hi s can increase fue l economy by up to 10% .
Eliminate unnecessary weight
Since every pound of extra weight increases fuel
consumption, it pays to remove any unnecessary
weight.
A roof rack increases the w ind resistance on the
vehicle and shou ld be removed when it is not
needed. You will save approximately 12% of your
fuel when at speeds from 62-75 mph (100-120 km/ h).
.,.

System settings
sound di stribu tion)/ Driver (sound dis tribution
aime d towa rd the d river) or
All /Front /Rear.
- Surround level* :
you can a dju st the vo lume of
t h e sur round effect by tu rning the contro l
k no b.
-AudioPilot (dynamic road noise compensa­
tion)* :
select and confirm Active /Inactive.
When t he f unct io n is act ive, the vo lume is auto ­
matically ad justed depending on t he leve l o f
noise ins ide the ve hicle.
- Sound focus * (adjusting the sound distribu­
tion ):
select and confi rm All (symmet rical
sound d istr ibutio n)/ Movie (optima l so und dis­
tribution fo r playing a
movie)/ Front/Rear .
- Volume balancing *:
the dynamic road noise
compensation ca n be ad justed by turning the
contro l knob.
@ Subwoofer* I @ Bass/ @Treble
You can a djust the Subwoofer *, Bass and Treble
sett ings by turning the contro l kno b. The
cha nged settings only apply fo r the aud io so urce
that is active at the t ime . This allows you to ad­
jus t th e sound se tt in gs for eac h aud io so urce sep­
ara tely.
® Balance/Fader (sound focus)
- Adjusting the sound distribution using the
MMI touch :
move your finger on the MMI t ouch
contro l pane l in the des ired d irec tion.
Adjusting the system
volume
.,. Se le ct: the IMENU ! butto n> Tone .
Navigation* control button
Voice guidance volume /Music volume during
nav. prompts:
vol ume o f navigation prompts
d ur ing ac tive ro ute g uidance . Mu sic volume dur­
i n g nav iga tion prom pts mea ns tha t th e vol ume
of audio playb ack is te m porar ily lowered whe n
t he p arkin g sys tem or v oic e gu idance i s act ive.
Voice guidance: se e ¢page 175.
Voice guidance during call : see ¢ page 175.
206
Telephone* control button
Ringtone volume /Phone call volume :
you ca n
adjus t the sele cte d r ing tone vo lume or call vol ­
u me by tu rnin g the cont ro l knob. The
Phone call
volume
can on ly be adjusted durin g a call.
Systems control button
Speech dialog system volume :
you can adju st
th e vol ume o f th e ann ounc emen ts by tur ning the
contro l kno b.
MMI touch volume *: the vo lu m e of the MM I
tou ch pro mpts can be adjus ted by tur ning the
c on tro l k no b.
Other settings
.,. Sele ct: th e I M ENU I button > MMI setup contro l
bu tton.
Language
The language can be changed fo r the Info ta in­
men t display, t he dr iver i nfo rm ation system dis­
play, voice guid ance* and t he voice recogn itio n
sys te m* .
En glish, French and Spanish are ava ila bl e.
Measurement units
The following meas urement u nits ca n be set in
the Infotainment d isp lay a nd dr iver info rmat ion
system.
- Speed (mph o r km/ h)
- Distance (miles o r kilomete rs)
- Temperature (°For 0
( )
-Fuel consumption (l/l0 0km, mpg (US), mpg
(U K) or k m/l)
- Volume (lite rs, ga llons ( UK) o r gallo ns (US))
Speech dialog system
App lies to : vehicles wi th voice recog nitio n syste m
Display speech commands : th e d isplay of poss i­
ble commands dur ing vo ice input can be switc h­
ed
On or Off .
Short dialog :
prompts in a s horter format can be
switc hed
On or Off .
Input signal :
the beep input signa l dur ing a dia-
l og can be switc hed
On or Off. ..,.

u. co ..... N
" N ..... 0 0 :c ' & WARNING
Read and follow all WARNINGS before check­
ing anything in the engine
compartment~ .&.
in Working in the engine compartment on
page 272.
Engine oil
If the engine oil level is too low
If you need to add engine oil, use an oil that is listed on the sticker.
The sticker is located at the
front of the engine
compartment ~ page 274,
fig.
258.
If the recommended engine oil is not available,
in an emergency you may add a maximum of 1
quart
(I liter) of ACEA C3 or API SN engine oil
one time until the next oil change.
For more information on the correct engine oil
for your vehicle, contact an authorized Audi deal­
er or authorized Audi Service Facility. Have the oil
changed by an authorized Audi dealer or author­ ized Service Facility.
Audi recommends
«;;castrol I /g@@g PrtfTr.:!\.7.Tri,'lAl.
Audi recommends using the Longlife high-per·
formance engine oil from Audi Genuine Parts.
Checking the engine oil level
The engine oil level can be checked in the Info­
tainment system
Observe the safety precautions ~ A in Working
in the engine compartment on page 2 72.
~ Park your vehicle on a level surface.
~ Shut the engine off when it is warm.
~ Switch only the ignition back on.
~ Wait approximately two minutes.
~ Select: the ICARI function button> (Car)* Sys­
tems
control button > Service & control > Oil
level.
~ Read the oil level in the Infotainment system .
Add engine oil if the bar in the oil level indica­
tor is just before
"min"~ page 2 76.
Checking and Filling
@ Note
The engine oil level must not be under the
"min" marking, as this will increase the risk of
engine damage.
(D Tips
The oil level indicator in the display is only an
informational display.
If the oil level is too
low, a minimum oil warning appears in the in­
strument cluster. Add oil and close the hood.
The current oil level is displayed in the Info­
tainment system the next time the ignition is
switched on.
(D Tips
The engine oil consumption may be up to
0.5 quart/600 miles (0 .5 liter/1,000 km), de­
pending on driving style and operating condi­
tions. Consumption may be higher during the
first 3,000 miles (5,000 km). Because of this,
the engine oil level must be checked regular­
ly. It is best to check each time you refuel
your vehicle and before long drives.
- In order to provide effective lubrication and
cooling of internal engine components, all
internal combustion engines consume acer­
tain amount of oil. Oil consumption varies
from engine to engine and may change sig­
nificantly over the life of the engine. Typi­
cally, engines with a specified break-in peri­
od consume more oil during the break-in pe­
riod than they consume after oil consump­
tion has stabilized.
- Under normal conditions, the rate of oil
consumption depends on the quality and
viscosity of the oil, the RPM (revolutions per
minute) at which the engine is operated, the
ambient temperature and road conditions.
Further factors are the amount of oil dilu­
tion from water condensation or fuel resi­
due and the oxidation level of the oil. As any
engine is subject to wear as mileage builds
up, the oil consumption may increase over
time until replacement of worn components
may become necessary.
.,.
275

Wheels
&,. WARNING
Always adapt the tire pressure
to your driving style and vehicle
load .
-Overloading can lead to loss of
vehicle control and increase
the risk of an accident. Read and follow the important safe­
ty precautions
inc:::> page 295,
Tires and vehicle load limits.
-The tire must flex more if the
tire pressure is too low or if
the vehicle speed or load are
too high . This heats the tire up
too much. This increases the
risk of an accident because it
can cause the tire to burst and
result in loss of vehicle con­
trol.
-Incorrect tire pressure in­ creases tire wear and has a
Tire pressure table
Please note that the information
contained in the following table
was correct at the time of print­
ing, and the information is sub­
ject to change. If there are differ­ ences between this information
and the tire pressures specified
on the label on the driver's side B­ pillar, always follow the specifica-
294
negative effect on driving and
braking behavior, which in­
creases the risk of an accident.
@ Note
Replace lost valve caps to re­
duce the risk of damage to the
tire valves.
@ For the sake of the environment
Tire pressure that is too low in­
creases fuel consumption.
(D Tips
Audi recommends using the
tire pressure specified for a normal load
c:::> table on
page 295
or for a full load
when the vehicle is partially loaded.
tion on the B-pillar label
c:::> page 293, fig. 266.
Make sure that the tire designa­
tion on your tire matches the des­ ignation on the tire pressure label
and the tire pressure table.
The following table lists recom- mended tire pressures in cold
.,..

Wheels
the available cargo and lug­gage load capacity of your vehi­
cle.
.,.Check the tire sidewall
(¢ page 283, fig. 264) to deter­
mine the designated load rating
for a specific tire.
Wheel bolts and rims
Wheel bolts
Wheel bolts must be clean and loosen/tighten
easily .
Rims
Rims with a bolted rim ring* or with bolted wheel
covers* consist of multiple pieces . These compo­
nents were bolted together using special bolts
and a special procedure. You must not repair or
disassemble
them £:=?.&. .
A WARNING
Wheel bolts that are tightened or repaired in­
correctly can become loose and result in loss
of vehicle control, which increases the risk of
an accident. For the correct tightening specifi­
cation, see
¢page 314.
- Always keep the wheel bolts and the
threads in the wheel hub clean and free of grease.
- Only use wheel bolts that fit the rim.
- Always have damaged rims repaired by an
authorized Audi dealer or authorized Audi
Service Facility. Never repair or disassemble
rims yourself, because this increases the risk
of an accident .
Winter tires
Winter tires significantly improve the vehicle's
handling when driving in winter conditions. Be­
cause of their construction (width, compound,
tread pattern) , summer tires provide less trac­
tion on ice and snow.
298
.. Use winter tires on all four wheels .
.. Only use winter tires that are approved for your
vehicle.
.. Please note that the maximum permitted
speed may be lower with winter
tires¢ _&.. An
authorized Audi dealer or authorized Audi Serv ­
ice Facility can inform you about the maximum
permitted speed for your tires .
.,. Check the tire pressure after installing wheels
¢page 293 .
The effectiveness of winter tires is reduced great­
ly when the tread is worn down to a depth of
0.157 in (4 mm). The characteristics of winter
tires also decrease greatly as the tire ages , re­
gardless of the remaining tread.
A WARNING
- Never drive faster than the maximum per­
mitted speed for your tires. This could cause
the tires to heat up too much. This increases
the risk of an accident because it can cause
the tire to burst .
- Always adapt your driving to the road and
traffic conditions. Drive carefully and reduce
your speed on icy or slippery roads. Even
winter tires can lose traction on black ice .
® For the sake of the environment
Reinstall summer tires at the appropriate
time, because they provide better handling
when roads are free of snow and ice. Summer
tires cause less road noise, tire wear and fuel
consumption.
(D Tips
You can also use all season tires instead of
winter tires. Please note that in some coun­
tries where winter tires are required, only
winter tires with the
& symbol may be per­
mitted.
Snow chains
-
Snow chains not only improve the driving in win­
ter road conditions, but also the braking.
.,. Only install snow chains on the front wheels. .,.

u. co .... N
" N .... 0 0 :c ' may occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly . Always check the
TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function
properly.
Description
Applies to: 58 plus
The tire pressure monitoring system monitors
the pressure in the four tires when driving.
The system uses sensors that measure the tem ­
perature and pressure in the tires . The data is
sent from these sensors to the control module by
radio frequency.
The Tire Pressure Monitoring System shows the
current pressures and temperatures of the tires
in the Infota inment system
c:> page 303 . It also
compa res the current tire pressures with the
stored tire press ures and gives a warning in the
driver information system if the tire pressure is
different from what is stored
c:> page 304.
The system does not detect if the stored tire
pressures match the recommended tire pres­
sures.
- Every time the tire pressures change, for exam-
ple when the load in the vehicle changes,
- after replac ing a tire, or
- if wheels with new wheel sensors are used,
you must store the tire pressures again
c:> page 304.
A WARNING
-The tire pressure mon itor ing system assists
the driver in monitoring tire pressures. The
dr iver is responsible for having the tires in­
flated to the correct pressure.
- Do not change the tire pressure when the
temperature of the tire is extremely high.
T his cou ld result in serious damage to the
t ir e and even cause the tire to burst, in­
creasing the risk of an accide nt.
Wheels
-A tire with low pressure flexes more . This
heats the tire up too much. This could cause
the tread to separate and even cause the
tire to burst, increasing the risk of an acci­
dent.
- The Tire Pressure Monitoring System does
not warn you of damage or defects in the
tire construct ion that could cause the tire to
burst, for example. Inspect your tires regu­
larly.
@ For the sake of the environment
Low tire pressure increases fuel consumption
and tire wear.
(D Tips
-The pressure of the spare t ire* is not mon i­
tored.
- If tires are replaced, the sensors/va lves do
not need to be removed or replaced. Just re­
placed the valve stem and, if necessary, the
valve and the whee l electronics . If you have
questions, see an authorized Audi dealer or
authorized Audi Service Facility.
Displaying tire pressures/temperatures
Applies to: 58 plus
Requirement: the ignition must be switched on.
.. Select: the I CAR! funct ion button > Car systems
> Service & control > Tire pressure monitor >
Display tire pressure .
The current tire pressures are shown in green and
yellow numbers in the Infotainment system:
-Green: the current tire pressure and the spec i­
fied tire pressure are approx imately the same .
-Yellow: the current tire pressure is too low
compared to the specified tire pressure .
The specified tire pressure is the last tire pres ­
sure that was stored
c:> page 304 .
Note that the tire pressure also depends on the
temperature of the tire . The tire pressure in­
creases as the engine becomes warmer while
driv ing.
.,.
303