2013 AUDI S8 fuel consumption

24 Instruments and warning /indicator lights
to ice on the road ¢ & . If the vehi cle is
stationary, o r if you are dr iving at a very
l ow speed, the tempe rat ure shown in the
display might be slightly higher t han the
actua l o utside temperature. This is
ca used by the heat being rad iated from
t h e eng ine.
- You can se lect the un its used for temper ­
atu re, speed a nd other measurements in
the MMI.
- Fo r informat ion on the a udio/video and
nav iga tion* functions, refer to the sepa­
r ate MMI owner's manual.
Operation
The driver information system is operated us­
ing the buttons on the multifunction steering
wheel.
ffi
------,±.
~
Fig. 6 Multifunct ion steer ing wheel: operating "the driv­
e r info rmatio n system
Fi g. 7 Driver infor mat ion syste m: opening t he ve hicle
functio ns me nu
Operating concept
.. Swi tch the ignition on.
.. To sw itch between the tabs, press the ro ck­
er switch @to the left or righ t
c:::> fig. 6.
.. To access addi tio nal in fo rmat ion be low or
above, rotate t he thumbw heel @ dow n or
up. ..
To confirm a select ion, press t he thumb­
wheel @.
Accessing Vehicle functions
.. Sele ct the first tab wit h the ro cker swi tch
@ .
.. Press t he bu tton l==L Th e Vehicle functions
menu a ppears c:::> fig . 7.
.. To se lect a menu item, tu rn and press t he
thumbwhee l
®·
Resetting values to zero
.. Sele ct the on-board computer / Efficiency
program
menu item in the Vehicle func­
tions
men u.
.. Yo u can now select between the long-term
memory and short-term memory.
.. To reset the values in a memory, press and
hold th e thumbw heel @ for one second.
The last function selected d isp lays when you
switch the ignition on .
On-board computer
You can ca ll up the fo llowi ng i nformation in
the on -boar d computer:
- Dat e
- Dr iv ing t ime (h) fro m the short-term memo-
ry
- Average consumption in MPG ( l/100 km)
from the short-te rm memory
- Average speed i n mph (km/h) from the
short-te rm memory
- Distance driven in miles (km) from the
short-term memory
- Current fuel consumption in MPG ( l/100
km)
- Short-term memory overview
- Long-te rm memory ove rview
T he short-te rm memory collec ts dr iv ing in for­
mation from the time the ig nition is switched
o n unti l it is switched off. If you continue driv­
ing within two ho urs after switch ing the ign i­
tion off, the new values are incl uded when cal­
cu lating the cu rrent trip information .
Unli ke the short-term memory , the long-term
memo ry is not erased automatically. Yo u can ..,.

Instrument s and warning /indicator lights 25
select the time period for evaluat ing trip in­
formation yourself.
F or some veh icle functions, you can access the
t r ip information from the temporary memory
in the
line @~page23, fig. 5.
The current fuel consumpt ion can be dis­
p la yed using a bar ~
page 26, fig. 10. The
average consumption (mpg) stored in the
short-term memory is also displayed. Electri­
cal energy can be stored in the battery when
the vehicle is coast ing or driving downhill (re­
cuperation) . The bar will move toward D.
Efficiency program*
The eff ic iency program can help you to use
l ess fuel.
It evaluates driving information in
reference to fue l consumption and shows oth ­
er equipment influencing consumption as well
as shift recommendations.
q page 25. Fuel
economy messages
q page 25 provide tips
for efficient driving. The effic iency program
uses distance and consumption data from tr ip
computer
1.
To display the efficiency program, call up Ve­
hicle functions and select the menu option
Efficiency prog ram . If the data are deleted in
the efficiency program, those values are also
reset in trip computer.
(D Tips
- All stored values w ill be lost if the veh i­
cle battery is disconnected.
- Fuel consumptions (average and cur­ rent), range and speed are displayed in
metric units on Canadian models.
Other equipment
Applies to vehicles: with efficiency program
Fig. 8 Trip computer: ot her equipment
Requirement: The efficiency program must be
displayed
q page 25.
.,. Turn the thumbwheel until the other equip-
ment appears in the display .
Other equipment that is currently affecting
fuel consumption is listed in the efficiency program . The display shows up to three other
items of equipment @. The equ ipment using
the most fuel is listed first. If more than three
items using fuel are switched on, the equip­
ment that is currently using the most fuel is
displayed .
A scale ® also shows the current total con­
sump tion of all other equipment.
Fuel economy messages
App lies to vehicles: with efficiency program
Fig. 9 Disp lay : example o f a fu el econo my m essa ge
Fuel economy messages are displayed when
fuel consumption is increased by certain con­
ditions. If you follow these fuel economy mes­
sages, you can reduce your vehicle's consump­
tion of fuel. The messages appear automati-
cally and are only displayed in the efficiency
111,,

26 Instruments and warning/indicator lights
program. The fuel economy messages turn off
automatically after a certain period of time.
.,. To turn an economy message off immedi-
ately after it appears, press any button on
the multifunction steering wheel.
@ Tips
- Once you have turned a fuel economy
message off, it will only appear again af­
ter you turn the ignition on again.
- The fuel economy messages are not dis­
played in every instance, but rather in in­
tervals over a period of time.
Cylinder on demand System
Applies to vehicles: with 4.0 TFSJ engine
Fig. 10 Instrument duster: fuel consumption
To save fuel, the engine automatically turns
four cylinders on or off, depending on the
amount of power needed. This action is not
felt by the passengers.
Displaying cylinder mode
Requirement: the on-board computer is dis­
played
~ page 24.
.,. Turn the thumbwheel until the current fuel
consumption display is shown in the instru­
ment cluster.
If the green bar is displayed,
you are driving in 4-cylinder mode.
Basic requirements for 4-cylinder mode
4-cylinder drive mode is used automatically if
certain basic requirements are fulfilled. These
include:
- A low power output requirement.
- Driving in third gear or higher.
- Engine speed between 960 and 3,500 RPM. - A warm engine.
Odometer
Fig. 11 Instrument cluster Odometer and
reset button
The odometer shows you how many miles
(kilometers) you have driven. You can switch
the display from miles to kilometers and vice
versa via the MMI.
Upper odometer
The trip odometer shows the distance driven
since it was last reset. It can be used to meas­
ure short distances. The last digit indicates
1/10 of a mile (100 meters).
You can reset the trip odometer to zero by
pressing the Reset button
Efil.
Lower odometer
The lower odometer shows the total number
of miles (kilometers) driven.
Malfunction message
If there is a malfunction in the instrument
cluster,
DEF will appear in the trip odometer
display area. Contact your authorized Audi
dealer to have the problem corrected .
Time and date display
Fig. 12 Center console: analog clock

208 Driving and en vir onm ent
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 vehicle 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
the brakes first by braking carefully to re­
sto re the full braking effect.
@) Note
- Vehicle components such as the eng ine,
transmission, suspension or electr ical
system can be severely damaged by driv­ i ng th rough water.
- Always switc h off the Start-Stop-System
when driving through water~
page 87.
(1) 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 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 th rough safely.
- Avoid dr iving through salt water because
i t can cause corrosion.
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 driving 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
t ion w ill give you some tips on how you can
help the env ironment and your pocketbook.
@ Tips
The consumption estimates as published
by ENVIRONMENTAL PROTEC TION AGENCY
( E PA) and Transpo rt 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, 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 fuel when they a re ac­
ce lerating. If you anticipate what is going to
happen next, you will need to brake less and,
t hu s, acce lerate less . Let the vehicle coast
whenever possible -for examp le when you see
that the next traff ic light is red.

Avoid full throttle
Driving at moderate speeds saves fuel and
improves your mileage.
11-Try and keep well below your car's maxi-
mum 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 noise increase disproportionately at high
speeds. If you drive at approximately three
quarters of top speed, fuel consumption will
be reduced by one half. Never drive 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.
11-Shut the engine off when you are not driv­
ing the vehicle.
"" Do not warm up the veh icle by letting the
engine run at idle .
The idling phase is automat ically reduced for
vehicles w ith the Start/Stop system . It is effi­
cient to switch
off the engine in vehicles with­
out the Start-Stop-System when stopped at ra il road crossings and long red lights. Turning
the eng ine
off for just 30 -40 seconds saves
mo re fuel than is burned by s tarting the en­
gine again.
It takes a long time fo r the engine to wa rm up
fu lly when it is running at idle. Howeve r, wear
and noxious emissions 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 h igh rpms while the engine is
still warming up.
CD Note
Do not leave engine idling unattended af­
ter starting. If warning lights shou ld come
on to indicate improper operation, they
Dri vin g and en vironm ent 209
would go unheeded. Extended idling a lso
produces heat, which could result in over­
heating or other damage to the veh icle or
other property.
Regular maintenance
A badly tuned engine unnecessarily wastes a lot of fuel.
11-Have your vehicle serviced at reg ular inter-
vals .
By having your ve hicle reg ularly se rviced by an
Audi dealer he lps to ensure that it runs prop­
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 co nsump ­
tion .
Chec k your oil e ach t ime you fill y our t ank.
T he amou nt of o il used is re lated to engine
load and speed.
It is normal for the oil consumption of a new
engine to reac h 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 applies to fuel consumption and en­ gine output .
CD Note
-Have your veh icle ma inta ined properly
and in accordance with the service rec­
ommendations in your Warranty
& Ma in­
tenance book let . Lack of proper mainte­
nance as well as improper use of the ve­
hicle will impai r the function of the
em ission cont ro l system and cou ld lead
t o damage.
- Do not alter or remove any component of
t he Emission Control System unless ap­
proved by the manufacture r.
- Do not alter or remove any devi ce, such
as heat shie lds, switches, ign ition w ires,
valves, which are designed to protect
your vehicle's Emission Control System
•
•

210 Driving and environment
and other important vehicle compo­
nents .
Fewer short trips
Fuel consumption will always be relatively
high on short trips.
,.. Try to avo id driving short distances with a
cold engine.
The engine and catalyt ic converter have to
r each their optimal
operating temperature to
reduce fuel cons umption and noxious emis­
sions effect ively .
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 mi les (4 km),
the engine is at its proper operating tempera­
ture and fuel economy has reached a norma l
level. So you can see that you should avoid
short tr ips whenever possible.
The
outside temperature is also critical in this
regard. Your car consumes more fuel in the
winter than in the summer.

With all these variables coming into play, no
standard rate of oil consumption can be es­
tablished or specified . There is no alternative
to regular and freq uent checking of the oi l lev­
e l, see
Note .
If the ye llow engine oi l level war ning symbol
in the instrument cluster
II lights up, you
should check the o il level as soon as possible
¢
page 23 7 or ¢ page 238. Top off the oil at
your earliest convenience¢
page 238 .
.&_ WARNING
Before yo u check anything in the engine
compartment, always read and heed all
WARN INGS
¢ &. in Working in the engine
compartment on page 232.
0 Note
Dr iving with an insufficient oil level is like­
ly to ca use seve re damage to the eng ine.
{1) Tips
- The oil pressu re warning display. i s
not an indicator of the oi l level. Do not
rely on it. Instead , check th e oil level in
your engine at regular interval s, pref ­
erably each time you refuel, and always before going on a long trip .
-If yo u have the impres sion your engine
consumes excessive amo unts o f oil, we
r ecommend that yo u consult your Audi
dealer to have the ca use of yo ur conce rn
proper ly diagnosed . Keep in mind that
the accurate measurement of oil con­
sumption requires great care and may
take some time. You r Audi dealer has in­
str uctions about how to measure o il con­
sumption accurately.
Checkin g and fillin g 237
Checking the engine oil level
Applies to vehicles : wit h oil level indicator
Fi g. 1 97 Disp lay: o il leve l indicator
.,. Park yo ur vehicle on a level surface.
.,. Shut the eng ine off when it is warm .
.,. Switch on ly the ignition back on .
.,. Wait approx imately two m inutes.
.,. Select:
I CAR ! function button > Car systems
contro l butto n > Servicing & checks > Oil
level.
.,. Check t he oil level i n the display ¢ fig. 197.
Add eng ine o il if t he bar o f the oil leve l ind i­
cator is near "min"¢
page 238.
Depend ing on the way the vehicle is dr iven
and t he ope rat ing cond it ions, oi l cons umption
c a n be up to 1/ 2 quart pe r 60 0 miles (0.S liter
per 1,000 km) . Cons umption may be higher
within the first 3,000 m iles (S,000 km) .
(D Tips
The o il leve l indic ato r in the MMI Disp lay is
on ly an informa tion display.
If t h e oil level
i s low, a minimum oil warn ing appears in
the instrument cluster. Add oil
¢
page 238. If the hood has been opened,
the current oil level is shown in t he instr u­
ment cluster the next t ime the ignition is
swi tched on.
•
•

-Only when a ll tires on the vehicle are fi l­
led to the correct pressure, the tire pres­
sure monitoring* system can work cor­ rect ly.
- The use of incorrect tire pressure values
can lead to accidents or other damage.
Therefore it is essential that the d river
observe the specif ied tire pressure values
for the tires and the co rrect p ress ures for
the f un ct ion of t he tire pressure mo nitor­
ing sy stem*.
- Always inflate ti res to the recommended
and co rrec t tire pressu re befo re dr ivi ng
off.
- Driv ing wi th under infla ted ti res bend
more, letti ng them get too ho t res ulting
in t read separation, sudden t ire fail ure
and loss of control.
- Excessive spee d and/ove rloading can
ca use heat bui ld -up, sudden tire fa il ur e
and loss of control.
- If the t ire pressure is too low or too high,
the tires w ill wea r prematu rely an d the
vehicle will not hand le we ll.
-If the t ire is no t flat and you do no t have
to change a w heel imme diate ly, drive at
reduced speed to the nearest service sta­
t ion to check the tire pressure and add
air as required.
(D Note
Driving without va lve stem caps ca n cause
damage to the t ire va lves. To prevent this,
always make s ure that facto ry installed
valve stem caps on all wheels a re secure ly
mounted on the va lve .
@) For the sake of the environment
Underinflated tires will a lso increase the
fue l consumption .
Tires and vehicle load limits
There are limits to the amount of load or
weight that any veh icle and any t ire can carry .
A vehicle that is ove rloaded w ill not ha ndle
well and is more difficult to stop . Overload ing
can no t on ly lead to loss o f vehi cle con tro l,
Tire s an d wheel s 257
but can also damage important parts of the
vehicle and ca n lead to sud den tire fai lure, in ­
clud ing a b lowout and s udden def lation that
can cause the vehicle to cras h.
Your safety and that of your passengers also depends on making sure that load limits are
not exceeded . Vehicle load includes everybody
and everything in and on the veh icle. These
load lim its are technically referred to as the
vehicle's
Gross Vehicle We ight Rating
("GVWR ") .
The "GVWR" includes the weight of the basic
vehicle, all factory installed accessories, a full
tank of fuel, o il, coo lant and other fluids plus
maximum load . The max imum load includes
the number of passenge rs that th e vehicle is
i n tended to car ry ("seat ing capa city") wi th an
ass umed we igh t of 150 lbs (68 kg) fo r each
passenger at a designated seating posi tion
and t he tota l weight of any luggage i n the ve­
hicle . If you tow a trai ler, the weight of the
tra iler hitch and the tongue weight of the
loaded tra iler must be included as part of the
vehicle load.
T he
Gro ss Axle Weight Rating ("GAWR") is
the maximum load that can be applied at each
of the vehicle's two axles.
T he Gross Vehicle Weight Rating and the
G ross Ax le Weig ht Rating are listed on the
safety comp liance sticker label located on the
driver's side B-pillar. Your Audi has 5 seat ing
pos itions, 2 in the front and 3 in the rea r fo r
total seating capacity of 5 . Vehicles with pow­
er ind iv idual rea r seats* have 4 seat ing pos i­
tions, 2 in the front and 2 in the rea r fo r total
seat ing capac ity o f 4. Each seating position
has a safety belt~
page 144, Safety belts.
The fact that there is a n uppe r limit to you r
vehicle's G ross Vehicle We ight Rating means
t h at the to tal weig ht of whatever is bei ng car ­
ried in the vehicle ( in cl ud ing t he weight of a
trai ler hitch and the tongue weigh t of t he
loa ded trai le r) is limite d. The more passen­
gers in the vehicle or passengers who are
heavier than the standard we ights assumed
•
•