
Technical data
94
Technical data
Engine data 
Weights 
 
Z4 roadster 2.5iZ4 roadster 3.0i
Displacement
Number of cylinderscu in/cmµ152.1/2,494
6181.7/2,979
6
Maximum power output
at engine speedhp/kW
rpm184/141
6,000225/170
5,900
Maximum torque
at engine speedlb ft/Nm
rpm181/245
3,500222/300
3,500
Compression ratio
ε10.5 10.2
Stroke
Borein/mm
in/mm2.95/75
3.31/843.53/89.6
3.31/84
Fuel-injection system Digital electronic engine-management system DME
Z4 roadster 2.5iZ4 roadster 3.0i
Curb weight
with manual transmission
with automatic transmissionlbs/kg
lbs/kg2,932/1,330
2,998/1,3602,998/1,360
3,042/1,380
Approved gross vehicle weight
with manual transmission
with automatic transmissionlbs/kg
lbs/kg3,483/1,580
3,549/1,6103,549/1,610
3,593/1,630
Approved front axle load lbs/kg 1,720/780 1,742/790
Approved rear axle load lbs/kg 1,841/835 1,863/845
Luggage compartment capacity 
with the convertible top compartment raisedcu ft/l
cu ft/l8.5/240
9.2/2608.5/240
9.3/260
Never exceed either the approved axle loads or the approved gross vehicle weight. 

At a glance
Controls
Driving tips
Mobility
Reference
 99
Driving lamps
– indicator lamp, defective 
bulb 14
Driving notes 65
DSC Dynamic Stability 
Control 51
– indicator lamp 14
DTC Dynamic Traction 
Control 51
– indicator lamp 14
Dynamic Brake Control 
DBC 52
– indicator lamp 14
Dynamic Stability Control 
DSC 51
– indicator lamp 14
Dynamic Traction Control 
DTC 51
– indicator lamp 14
E
Electric Power Steering 
EPS 42
– indicator lamp 15
Electric power windows 22
Electrical convertible 
top 25
Electrical fault
– convertible top 25
– door lock 20
– fuel filler door 70
– storage compartment 60
Emergency operation
– convertible top 25
– doors 20
– fuel filler door 70
– storage compartment 60
Emergency release
– from inside luggage 
compartment 22
Engine 38
– break-in procedures 64
– starting 38
– switching off 39
Engine compartment 78
Engine coolant 96
– refilling 81Engine oil 79
– capacity 96
– quality 80
– refilling 79
Engine oil consumption 79
Engine oil level 79
– checking 79
Engine oil pressure 79
– indicator lamp 14
Engine oil sensor 79
– indicator lamp 14
Engine oil types 80
Engine output 94
Engine speed 94
EPS Electric Power 
Steering 42
ESP, refer to DSC 51
Exhaust system, refer to 
High temperatures 65
Exterior mirrors 32
– automatic dimming 
feature 33
Eyelet for tow-starting and 
towing 90
F
False alarm 28
Fault
– storage compartment 60
First-aid kit 89
Flat tire 73, 75
Flat Tire Monitor 53
– indicator lamp 14, 53
Fog lamps 46
– indicator lamp 14
Footbrake, refer to Driving 
notes 65
Front airbags 33
Fuel consumption 50
– display 47
Fuel filler door 70
– unlocking in case of elec-
trical fault 70
Fuel gas cap 70
Fuel gauge 47
Fuel specifications 70, 94
Fuel tank capacity 96
Fuses 88
G
Gasoline gauge, refer to 
Fuel gauge 47
Gasoline specifications, 
refer to Fuel 
specifications 70
Glove compartment 60
Gross vehicle weight, 
approved 94
Guide Booklet, Warranty 
and Service 82
H
Handbrake 39
Hands-free system 61
Hardtop preparation 67
Hardtop, refer to the sepa-
rate Owner's Manual
Hazard warning flashers 12
Hazard warning triangle 89
Head restraints 30
Headlamp flasher 42, 46
Headlamp washer 
system 79, 96
Headlamps 84
– access 84
– high beam 42
Heated seats 31
Heavy loads 66
Height 95
High beams 42, 46
– bulb replacement 85
– indicator lamp 14
High temperatures 65
Hood 77
Hood release 77
Hydraulic brake assistant, 
refer to DBC
Hydroplaning 65
I
Ignition lock 38
Imprint 4, 6
Indicator and warning 
lamps 14 

Everything from A - Z
100 Indicator lamps
– airbag 33
– alarm system 27
– brake fluid 81
– engine temperature 47
– flat tire 75
– Flat Tire Monitor 53
– reserve tank 47
Inflation pressure 71
– monitor 53
INSPECTION 48
Instrument cluster 13
Instrument lighting 46
Instrument panel 12
Interior
– central locking system 20
Interior lamps 19, 46
– remote control 19
Interior mirror
– automatic dimming 
feature 33
Interior motion sensor 19
– deactivating 28
Interior rearview mirror 32
Interlock 38
Intermittent operation, 
windshield wipers 43
J
Jack 87
– jacking points 87
Jets, refer to 
Ventilation 56, 59
Jump-starting 89
K
Key Memory 37
Keys 18
– spare 18
– with remote control 18
Knee airbags 33
L
Lamp
– passenger airbags 35
Lamp control 45
Lamp replacement 84Lamps
– backup lamp 86
– brake lamp 86
– bulb replacement 84
– center high-mount brake 
lamp 87
– daytime driving lamps 45
– defective bulbs 45
– fog lamps 46
– headlamp flasher 46
– headlamps 84
– high beams 46, 85
– indicator lamp, defective 
bulb 14
– instrument lighting 46
– interior lamps 46
– lamp replacement 84
– license plate lamps 87
– LIGHTS ON warning 45
– low beams 45, 85
– low beams, automatic 45
– parking lamps 45
– reading lamps 46
– rear lamp 86
– standing lamps 46
– turn signal indicators 86
– xenon lamps 85
LATCH child-restraint 
mounting system 36
Length 95
License plate lamps
– bulb replacement 87
Light switch 45
Lighter 61
LIGHTS ON warning 45
Loads, securing 66
Lock
– door 20
Locking 19
Longlife oils 80
Low beams 45
– automatic 45
– bulb replacement 85
– indicator lamp, defective 
bulb 14
Luggage 
compartment 22, 94
– capacity 94
– enlarging 22
– remote control 19Luggage compartment 
lid 21
– emergency release from 
luggage compartment's 
interior 22
– opening from the 
inside 21
– opening from the 
outside 21
– opening/closing 21
– remote control 19
M
M+S tires 76
Maintenance system 82
Malfunction
– door lock 20
– fuel filler door 70
– remote control 19
– storage compartment 60
Malfunction of electrical 
accessory 88
Manual convertible top 23
Manual operation
– door lock 20
– electrical convertible 
top 25
– fuel filler door 70
– storage compartment 60
Manual transmission 40
Master key 18
Maximum cooling 58
MC operation, refer to the 
Owner's Manual for Radio
MD operation, refer to the 
Owner's Manual for Radio
Mechanical convertible 
top 23
Mechanical seat 29
Memory
– seats 30
Memory, refer to Key Mem-
ory, Vehicle Memory 37
Microfilter 59
Microphone, cellular 
phone 61
Mirrors 32
– heating 32
Modifications, 
technical 7 

At a glance
Controls
Driving tips
Mobility
Reference
 101
N
Navigation system, refer to 
the separate Owner's 
Manual
Nets 60
O
OBD socket 83
Odometer 47
Oil 79
– additives 80
– capacity 96
– quality 80
Oil change interval, refer to 
the Service and Warranty 
Information Booklet for 
US models/Warranty and 
Service Guide Booklet for 
Canadian models
Oil consumption 79
Oil dipstick 79
Oil filter change 96
Oil level 79
– checking 79
– indicator lamp 14
Oil pressure 79
– indicator lamp 14
Oil sensor 79
– indicator lamp 14
OIL SERVICE 48
Oil types 80
Onboard computer, refer to 
Computer or to the sepa-
rate Owner's Manual for 
Onboard Computer
Onboard tool kit 84
Operating elements 12
Outlets, refer to 
Ventilation 56, 59
Output 94
Outside air mode
– air conditioning 56
Outside temperature 
display 48
– changing units 49
– in computer 49
P
Paintwork, refer to the Car-
ing for your vehicle bro-
chure
Panel lighting 46
Panic mode 19
Parking brake 39
– indicator lamp 14
Parking lamps 45
Particle filter
– automatic climate 
control 56
Passenger airbags
– activation/deactivation 34
Pollen, refer to
– Microfilter/activated-
charcoal filter 59
– Particle filter 56
Power seat 30
Power steering, electric 42
Power windows 22
Preparations for the cellular 
phone 61
Pressure monitor, tires 53
Pressure, tires 71
R
Radiator 96
Radio, refer to the Owner's 
Manual for Radio
Rain sensor 43
Reading lamps 46
Rear lamps 86
– bulb replacement 86
Rear window defroster
– air conditioning 56
– automatic climate 
control 59
Rearview mirror 32
Recirculated air mode
– air conditioning 56
– automatic climate 
control 58
Refueling 70
Remote control 18
– interior motion sensor 19
– luggage compartment 
lid 19
– malfunction 19Remote control keys 18
Replacement key 18
Replacement of tires 73
Reserve tank indicator 
lamp 47
Restraint systems 34
Reverse 40
Run Flat tires 73, 75, 87
– flat tire 75
S
Safety belts 31
Safety defects 8
Seat adjustment
– storing 30
Seat heating 31
Seat memory 30
Seats 29
– adjustment, 
mechanical 29
– adjustment, power 30
Securing loads 66
Securing, locking the 
vehicle 19
Selector lever
– automatic 
transmission 40
– position, automatic 
transmission 40
Service 48
Service and warranty 7
Service and Warranty Infor-
mation Booklet 82
Service Engine Soon 83
– indicator lamp 14
Service interval 
display 48, 82
Shiftlock 40
Side airbags 33
Snow chains 76
Socket
– for Onboard 
Diagnostics 83
– refer to Cigarette lighter 
socket 61
Spare fuses 88
Spare key 18
Special oils 80
Speed control, refer to 
Cruise control 44