2008 AUDI A4 technical data

Contents3
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Safety
. . . . . . . . . . . . . . . . . . . . . . .
Safe driving
. . . . . . . . . . . . . . . . . . . .
General notes . . . . . . . . . . . . . . . . . .
Correct sitting positions . . . . . . . .
Pedal area . . . . . . . . . . . . . . . . . . . . .
Stowing luggage safely . . . . . . . . .
Seat belts
. . . . . . . . . . . . . . . . . . . . . .
Why is it so important to use seat
belts? . . . . . . . . . . . . . . . . . . . . . . . . .
Forces acting in a collision . . . . . .
How to wear seat belts properly .
Belt tensioners . . . . . . . . . . . . . . . . .
Airbag system
. . . . . . . . . . . . . . . . .
Description of airbag system . . . .
Front airbags . . . . . . . . . . . . . . . . . .
Side airbags . . . . . . . . . . . . . . . . . . .
Head-protection airbags
(sideguard) . . . . . . . . . . . . . . . . . . . .
Deactivating the front passenger's
airbag via the key-operated switch
Child safety
. . . . . . . . . . . . . . . . . . . .
Points to remember if children are
travelling in the car . . . . . . . . . . . . .
Child safety seats . . . . . . . . . . . . . .
Fitting child safety seats . . . . . . . .
Driving tips
. . . . . . . . . . . . . . . .
Intelligent technology
. . . . . . . . . .
Electronic stabilisation program
(ESP) . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes . . . . . . . . . . . . . . . . . . . . . . . . .
Power steering (servotronic) . . . . .
Four-wheel drive (quattro®) . . . . . .
Power management . . . . . . . . . . . .
Your vehicle and the
environment
. . . . . . . . . . . . . . . . . . .
Running in . . . . . . . . . . . . . . . . . . . . .
Emission control systems . . . . . . .
How to improve economy and
minimise pollution . . . . . . . . . . . . . .
Environmental compatibility . . . . .
Towing a trailer
. . . . . . . . . . . . . . . .
Driving the vehicle with a trailer or
caravan . . . . . . . . . . . . . . . . . . . . . . .
Removable towing bracket . . . . . .
General maintenance
. . .
Care of vehicle and cleaning
. . .
General notes . . . . . . . . . . . . . . . . . .
Care of exterior . . . . . . . . . . . . . . . . .
Care of interior . . . . . . . . . . . . . . . . .
Fuel and filling the tank
. . . . . . . .
Petrol . . . . . . . . . . . . . . . . . . . . . . . . . .
Diesel . . . . . . . . . . . . . . . . . . . . . . . . .
Filling the tank . . . . . . . . . . . . . . . . . .
Checking and topping up fluidsBonnet . . . . . . . . . . . . . . . . . . . . . . . .
Engine compartment layout . . . . . .
Engine oil . . . . . . . . . . . . . . . . . . . . . .
Cooling system . . . . . . . . . . . . . . . . .
Brake fluid . . . . . . . . . . . . . . . . . . . . .
Battery . . . . . . . . . . . . . . . . . . . . . . . .
Windscreen washer . . . . . . . . . . . . .Wheels and tyres
. . . . . . . . . . . . . . .
Wheels . . . . . . . . . . . . . . . . . . . . . . . .
Run flat tyres . . . . . . . . . . . . . . . . . . .
Accessories and modifications
to the vehicle
. . . . . . . . . . . . . . . . . . .
Accessories and replacement
parts . . . . . . . . . . . . . . . . . . . . . . . . . .
Modifications . . . . . . . . . . . . . . . . . .
Radio transmitters and business
equipment . . . . . . . . . . . . . . . . . . . . . 185
186
186
188
191
192
194
194
195
197
199
201
201
203
205
207
208
210
210
213
216221
222
222
224
225
226
226
229
229
229
229
231
232
232
235243
244
244
244
247
251
251
251
252
254
254
256
257
260
262
263
267
268
268
274
277
277
277
278
document_0900452a81b1b9de.book Seite 3 Donnerstag, 26. Juli 2007 9:16 09

Contents 4Self-help
. . . . . . . . . . . . . . . . . . . . .
Self-help
. . . . . . . . . . . . . . . . . . . . . . . .
Warning triangle . . . . . . . . . . . . . . . .
First-aid kit . . . . . . . . . . . . . . . . . . . . .
Fire extinguisher . . . . . . . . . . . . . . . .
Tools and Tyre Mobility System . . .
Compact temporary spare wheel*
Tyre repairs . . . . . . . . . . . . . . . . . . . .
Changing a wheel . . . . . . . . . . . . . .
Jump-starting . . . . . . . . . . . . . . . . . .
Tow-starting and towing away . . .
Fuses and bulbs
. . . . . . . . . . . . . . . .
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing bulbs for headlights . . .
Changing bulb for front fog lights
Changing bulbs for rear lights in
side panel . . . . . . . . . . . . . . . . . . . . . .
Changing bulbs in boot lid . . . . . . .
Number plate light . . . . . . . . . . . . . .
Technical data
. . . . . . . . . . . .
General notes
. . . . . . . . . . . . . . . . . .
Explanation of technical data . . . .
Dimensions . . . . . . . . . . . . . . . . . . . .
Capacities . . . . . . . . . . . . . . . . . . . . .
Vehicle identification data . . . . . . .
Performance, weights and
dimensions
. . . . . . . . . . . . . . . . . . . .
Petrol engines . . . . . . . . . . . . . . . . .
Diesel engines . . . . . . . . . . . . . . . . .
Index
. . . . . . . . . . . . . . . . . . . . . . . . 281
282
282
282
283
283
284
285
288
293
295
300
300
304
306
310
311
314
315319
320
320
320
321
321
323
323
325
329
document_0900452a81b1b9de.book Seite 4 Donnerstag, 26. Juli 2007 9:16 09

Notes on this Owner's Manual5
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Notes on this Owner's ManualThis Owner's Manual contains important information, tips, sugges-
tions and warnings.
Please ensure that this Owner's Manual is always kept in the vehicle.
It should always be available to anyone else driving the vehicle, i.e.
anyone renting, borrowing or buying the vehicle from you.
This manual describes the equipment available for the vehicle at the
time of going to print. Some of the equipment described here will
not be available until a later date, or may only be available in certain
markets.
Some sections of this Owner's Manual do not apply to all vehicles.
If this is the case, a text at the start of the section indicates which
vehicles it applies to, e.g. “Applies to vehicles: with auxiliary heater”.
This optional equipment is also marked with an asterisk “*”.
Illustrations are intended as a general guide, and may vary from the
equipment fitted in your vehicle in some details.
At the beginning of this Owner's Manual, you will find a table of
contents showing all the items described in this manual in the order
in which they appear. An alphabetical index is included at the end
of the Owner's Manual.
All references to positions such as “left”, “right”, “front” or “rear”
are given as seen facing in the direction of travel.
* optional equipment
The section is continued on the following page.

Denotes the end of a section.
®Registered trademarks are marked ®. However, the absence of
this symbol does not constitute a waiver of the rights
concerning any proprietary name.
⇒ Refers to a “WARNING” within the same section. If the
WARNING symbol is followed by a page number the warning text
referred to is included in a different section.
WARNING
Texts with this symbol contain safety information. They warn you
of serious dangers, possibly involving accident or injury.
Caution
Texts with this symbol draw your attention to a possible risk of
damage to your vehicle.
For the sake of the environment
Texts with this symbol refer to points relevant to the protection of
the environment.
Note
Texts with this symbol contain additional information of a more
general nature.
document_0900452a81b1b9de.book Seite 5 Donnerstag, 26. Juli 2007 9:16 09

Controls and displays9
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Controls and displaysOverview
Door handle
Seat memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electric adjuster for exterior mirrors . . . . . . . . . . . . . . .
Central locking switch . . . . . . . . . . . . . . . . . . . . . . . . . . .
Button for side assist . . . . . . . . . . . . . . . . . . . . . . . . . . .
Light switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control lever for:
−Turn signals and main beam headlights . . . . . . . . .
−lane assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight range control . . . . . . . . . . . . . . . . . . . . . . . . .
Steering wheel with:
−Horn
−Driver's airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−Controls for audio, TV*, telephone and speech
dialogue system*
−Paddle levers for tiptronic gearshift . . . . . . . . . . . . .
SET button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument cluster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset button for trip recorder . . . . . . . . . . . . . . . . . . . .
Control lever for:
−Windscreen wipers and washer . . . . . . . . . . . . . . . . .
−On-board computer . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air outlets with thumbwheel . . . . . . . . . . . . . . . . . . . . .
−For deluxe automatic air conditioner . . . . . . . . . . . .
−For deluxe automatic air conditioner plus . . . . . . . .
Depending on equipment fitted:−Radio
−CD changer
Depending on equipment fitted:
−Radio display
−MMI display
1)
Hazard warning lights
Glove box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front passenger's airbag . . . . . . . . . . . . . . . . . . . . . . . . .
Switches for the following (as applicable):
−Audi parking system . . . . . . . . . . . . . . . . . . . . . . . . . .
−Electronic Stabilisation Program (ESP) . . . . . . . . . . .
−Electric sun blind . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−Control for Audi drive select . . . . . . . . . . . . . . . . . . . .
Air conditioner, depending on equipment fitted:
−Deluxe automatic air conditioner . . . . . . . . . . . . . . . .
−Deluxe automatic air conditioner plus . . . . . . . . . . .
Ashtray with cigarette lighter . . . . . . . . . . . . . . . . . . . . .
Depending on gearbox fitted, gear lever or selector
lever for:
−multitronic
® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−Manual gearbox
Depending on equipment fitted:
−MMI control console or
−Switch for Audi parking system . . . . . . . . . . . . . . . . .
−Switch for Electronic Stabilisation Program (ESP
OFF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A1A2
75
A3
70
A4
49
A5
149
A6
57
A7
59
A8
62
145
A9
61
A10
203
167
A11
12
A12
11
A13
14
A14
65
25
A15
116
A16
107
99
107
A17
1)Depending on the equipment fitted in your vehicle the display screen is ei-
ther two-coloured or multi-coloured. As the two displays are more or less
identical this Owner's Manual uses the multi-coloured displays for illustra-
tion purposes.A18A19A20
90
A21
203
A22
170
222
64
159
A23
93
101
A24
86, 87
A25
162
A26
170
222
document_0900452a81b1b9de.book Seite 9 Donnerstag, 26. Juli 2007 9:16 09

Instruments and warning/indicator lamps11
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Instruments and warning/indicator lampsInstrumentsInstrument cluster overview
The instrument cluster is the driver's information centre.Fig. 2 Overview of instrument cluster
Coolant temperature gauge . . . . . . . . . . . . . . . . . . . . . .
Rev counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning and indicator lamps . . . . . . . . . . . . . . . . . . . . .
button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display
−Driver information system . . . . . . . . . . . . . . . . . . . . .
−Date and time display . . . . . . . . . . . . . . . . . . . . . . . . .
−Mileage recorder . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset button for trip recorder . . . . . . . . . . . . . . . . . . . . Speedometer
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note
•
The needles in the instrument cluster will sweep across the dials
when you switch on the ignition.
•
The instrument lighting (illumination of dials and needles) is
switched on when the ignition is on and the vehicle's lights are off.
The instrument lighting is dimmed automatically as the daylight
starts to fade. This function is intended to remind the driver to
switch on the dipped-beam headlights in good time when light
conditions become poor.
Coolant temperature gaugeThe coolant temperature gauge ⇒fig. 2 only works when the
ignition is switched on. In order to avoid possible damage to the
engine, please read the following notes for the different tempera-
ture ranges.
Engine cold
If the needle is still in the lower range of the dial, this indicates that
the engine has not yet reached operating temperature. Avoid high
engine speeds, full acceleration and heavy engine loads.
Normal temperature
In normal operation the needle will settle somewhere in the centre
of the dial once the engine has reached operating temperature. The
needle may also go further up when the engine is working hard at
high outside temperatures. This is no cause for concern provided
the warning symbol
 in the display does not start flashing.
A1
11
A2
12
A3
15
A4
SET
12
A5
21
13
14
A6
14
A7A8
14
A1
document_0900452a81b1b9de.book Seite 11 Donnerstag, 26. Juli 2007 9:16 09

Instruments and warning/indicator lamps13
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data The button has the following functions:
Activating clock, date, temperature and mileage
recorder displays
The display will appear for about 30 seconds if you press the
button ⇒page 12, fig. 3 when the ignition is switched off.
Starting check procedure (auto-check control)
The auto-check control checks important components and vehicle
systems. These background checks are run constantly, as long as
the ignition is switched on ⇒page 30.
You can start the “check procedure” manually by pressing the
button with the ignition switched on. This function check can be
started at road speeds up to 5 km/h.
Calling up driver messages again
A red or yellow symbol appearing in the instrument cluster display
is normally accompanied by a corresponding message. The
message will disappear from the display after about 5 seconds. If
required, you can call up the message again by briefly pressing the
button.
Setting speed warning
You can press the button briefly to set speed limit warning 1
while the vehicle is moving ⇒page 29. If you press and hold the
button, this will cancel the speed warning.
Time and date displayQuart z clock
The date, time and display format can be changed using the sound
system or MMI* control console. Please refer to the sound system
or MMI* Operating Manual for more details.
Radio-controlled clock*
When the clock is in “radio-control” mode the signal reception
symbol (a radio tower with radio waves) appears in the display
⇒fig. 4. It is then not possible to change the minutes or the date
manually.
Note
•
The digital clock and mileage recorder displays are switched on
for about 30 seconds when the driver's door is opened.
•
When the ignition is switched off, the clock and date display can
be switched on for about 30 seconds by pressing the button
⇒page 12, fig. 3 ⇒page 12.
SET
SETSET
SET
SET
SET
Fig. 4 Instrument
cluster: Time and date
display
SET
document_0900452a81b1b9de.book Seite 13 Donnerstag, 26. Juli 2007 9:16 09

Instruments and warning/indicator lamps 14Mileage recorder
The instrument shows how far you have travelled.The mileage is stated in kilometres (“km”) or “miles”.
You can switch the display from kilometres to miles and vice versa
via the sound system or MMI* using the button on the control
console.
Odometer / trip recorder
The odometer records the vehicle's total mileage.
The trip recorder shows the distance that has been travelled since it
was last reset. It is used to measure individual journeys. The last
digit of the trip recorder indicates distances of 100 metres or tenths
of a mile.The trip recorder can be reset to zero by pressing the reset button
⇒fig. 6.
Fault display
If there is a fault in the instruments, the letters dEF appear perma-
nently in the trip recorder display. Please have the fault rectified as
soon as possible.
Immobiliser
When the ignition is switched on, the security programming of the
ignition key is verified electronically.
If an uncoded key is used, SAFE will appear continuously in the
mileage recorder display. The vehicle cannot then be driven
⇒page 43.
Note
•
The date, time and recorded mileage will continue to be
displayed for about 30 seconds after you switch off the ignition.
•
The digital clock and mileage recorder displays are switched on
for about 30 seconds when the driver's door is opened.
•
When the ignition is switched off, the mileage recorder can be
switched on for about 30 seconds by pressing the button
⇒page 12, fig. 3 ⇒page 12.
Fuel gaugeThe gauge only works when the ignition is switched on.
When the needle reaches the reserve zone, the symbol
 ⇒page 37
lights up in the instrument cluster display together with the
message Please refuel. At this point there are still about 8 litres of
fuel left in the tank. This is your reminder to fill up soon.
The tank capacity of your vehicle is given in the Technical data
section.
Fig. 5 Instrument
cluster: Mileage
recorderFig. 6 Instrument
cluster: Reset button
CAR
0.0
SET
document_0900452a81b1b9de.book Seite 14 Donnerstag, 26. Juli 2007 9:16 09

Instruments and warning/indicator lamps15
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Caution
Never run the tank completely dry. The irregular supply of fuel can
cause misfiring, which would allow unburnt fuel to enter the
exhaust system. This can lead to overheating and damage to the
catalytic converter.Warning and indicator lampsOverview
The warning and indicator lamps indicate a number of
different functions and possible faults.Fig. 7 Instrument cluster with warning and indicator lamps

Dynamic steering
⇒page 16

Engine management (alternative
to)
⇒page 16

(alternative to
)
⇒page 16

Electronic stabilisation program (ESP)
⇒page 17

Airbag system
⇒page 17

Tyre pressure monitoring
⇒page 17

Left turn signals
⇒page 18

Trailer turn signals*
⇒page 18

Seat belt warning lamp
⇒page 18

Emission control system
⇒page 18

lane assist (active)
⇒page 18

lane assist (inactive)
⇒page 18

Main beam headlights
⇒page 18

Right turn signals
⇒page 18

Cruise control system*
⇒page 19
document_0900452a81b1b9de.book Seite 15 Donnerstag, 26. Juli 2007 9:16 09