Bmw Z4-30I (2003–2008) — Specifications, Fluids & Diagnosis | TroubleAtlas

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Bmw Z4-30I (2003–2008)
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BMW Z4-30I (2003–2008): Full Technical Specs & OBD2 Diagnostics

By TroubleAtlas Technical Team · Updated 2 July 2026 · Cross-checked against 3 independent sources
Built 2003–2008 · all production years covered on this single page

3.0L I6 M54 • Gasoline

Bmw Z4-30I (2003–2008)

© Wikimedia Commons CC BY-SA

5 Common problems View details →
29 OBD2 codes View details →
0 Recalls / TSB View details →
TroubleAtlas Score
An independent value score for the Bmw Z4-30I (2003–2008) — reliability, safety, cost, parts, upkeep and documentation. Owing nothing to the manufacturer.
Scorecard · each voice 0–10
Reliability
n/a
Safety & recalls
n/a
Repair cost
5.1
Parts & repairability
4.2
Maintenance & durability
n/a
Documentation & support
n/a
★ How we calculate this → Methodology
TROUBLEATLAS · SCOREINDEPENDENT · VERIFIED★★TA4.7/10
Independent · Verified · Never for sale

Every figure on this Bmw Z4-30I (2003–2008) page is aggregated and cross-checked against more than 6.6 million real workshop operations, NHTSA records and OEM technical sources — and updated continuously. No invented estimates.

The Bmw Z4-30I (2003–2008) uses BMW TwinPower Turbo 5W-30 engine oil. Its battery is group H7 (BCI), rated at 760A cold-cranking amps. It is powered by a 3.0L I6 M54 engine. Use the sections below for verified fluids, battery, OEM tyres, the maintenance schedule, recommended parts and the most commonly reported OBD2 fault codes for this vehicle.

⚠️Common problems 🔧Common repairs 💧Fluids & lubricants 🔋Battery 🔌Fault codes (OBD2) 🔴Dashboard lights 🛒Parts comparator 🔧Accessories & tools 🛞Tyres 📋Recalls & TSB 📍Workshops nearby
⚠️ COMMON PROBLEMS
Engine overheatingFREQUENT

Engine temperature over limits — check coolant level, thermostat and radiator.

Related codes: P0217

Oil pressure sensor: low signalFREQUENT

ECU detects insufficient oil pressure — check oil level and sensor.

Related codes: P0522

Insufficient oil pressureFREQUENT

Oil pressure below critical threshold — stop the engine and check immediately.

Related codes: P0524

Engine control module (PCM) faultFREQUENT

Faulty ECU processor — requires specialist workshop diagnosis.

Related codes: P0606

Throttle actuatorFREQUENT

Throttle actuator motor circuit open — loss of throttle response.

Related codes: P2100

🔧 COMMON REPAIRS
🔧
Front brake pads
Difficulty: Medium
1.1h
€77 – €99
🔧
Rear brake pads
Difficulty: Medium
1.2h
€84 – €108
🛢
Engine oil change
Difficulty: Easy
0.4h
€28 – €36
🔧
ABS Module
Difficulty: Hard
2.7h
€189 – €243
💰 AVERAGE INDICATIVE COSTS

Prices may vary by area and workshop.

🔧
Full service
€ 120 – € 200
🛑
Full brake service
€ 180 – € 300
⚡
Spark plug replacement
€ 80 – € 140
📊
Electronic diagnosis
€ 40 – € 70
⏱️ OFFICIAL LABOUR TIMES (OLP)

Standard labour hours from a database of 6.6M+ real shop operations, with an indicative labour-cost estimate for your country.

Brakes8 operations
OperationLabour hours (OLP)Est. labour cost
ABS Module2.7h€ 121–€ 202
ABS Pump3.4h€ 153–€ 255
ABS Tone Ring2.0h€ 90–€ 150
ABS Wheel Speed Sensor - Front1.1h€ 49–€ 82
ABS Wheel Speed Sensor - Rear1.1h€ 49–€ 82
Brake Bleed - All Four1.4h€ 62–€ 105
Brake Booster3.4h€ 153–€ 255
Brake Booster Check Valve0.4h€ 18–€ 30
Cooling8 operations
OperationLabour hours (OLP)Est. labour cost
Coolant Bypass Pipe2.0h€ 90–€ 150
Coolant Flush1.4h€ 62–€ 105
Coolant Reservoir0.7h€ 31–€ 52
Coolant Temperature Sensor0.7h€ 31–€ 52
Cooling Fan Assembly1.4h€ 62–€ 105
Cooling Fan Clutch1.4h€ 62–€ 105
Cooling Fan Motor2.0h€ 90–€ 150
Cooling Fan Relay0.4h€ 18–€ 30
Electrical8 operations
OperationLabour hours (OLP)Est. labour cost
Airbag - Driver1.4h€ 62–€ 105
Airbag - Passenger2.0h€ 90–€ 150
Airbag - Side2.7h€ 121–€ 202
Airbag Module/Computer1.4h€ 62–€ 105
Alternator2.0h€ 90–€ 150
Alternator Belt0.7h€ 31–€ 52
Amplifier2.0h€ 90–€ 150
Antenna0.7h€ 31–€ 52
Engine8 operations
OperationLabour hours (OLP)Est. labour cost
Camshaft Position Sensor1.4h€ 62–€ 105
Camshaft R&R10.8h€ 486–€ 810
Connecting Rod Bearings20.2h€ 909–€ 1515
Crankshaft Position Sensor1.4h€ 62–€ 105
Crankshaft R&R27.0h€ 1215–€ 2025
Cylinder Head R&R8.1h€ 364–€ 607
Cylinder Head Resurface10.8h€ 486–€ 810
Engine Mount - Front2.0h€ 90–€ 150
Exhaust8 operations
OperationLabour hours (OLP)Est. labour cost
Air Injection Check Valve1.1h€ 49–€ 82
Catalytic Converter - California2.0h€ 90–€ 150
Catalytic Converter - Direct Fit2.0h€ 90–€ 150
Catalytic Converter - Universal2.7h€ 121–€ 202
Downpipe2.7h€ 121–€ 202
EGR Cooler4.1h€ 184–€ 307
EGR Tube2.0h€ 90–€ 150
EGR Valve1.4h€ 62–€ 105
Fuel system8 operations
OperationLabour hours (OLP)Est. labour cost
Charcoal Canister1.4h€ 62–€ 105
EVAP Purge Valve1.1h€ 49–€ 82
EVAP Vent Valve1.1h€ 49–€ 82
Fuel Cap0.1h€ 4–€ 7
Fuel Filler Neck2.0h€ 90–€ 150
Fuel Filter0.7h€ 31–€ 52
Fuel Filter - In-Tank2.7h€ 121–€ 202
Fuel Injector - Single1.4h€ 62–€ 105
HVAC8 operations
OperationLabour hours (OLP)Est. labour cost
AC Accumulator2.0h€ 90–€ 150
AC Clutch Coil2.0h€ 90–€ 150
AC Compressor3.4h€ 153–€ 255
AC Compressor Clutch2.7h€ 121–€ 202
AC Compressor Oil Add0.7h€ 31–€ 52
AC Condenser3.4h€ 153–€ 255
AC Evaporator8.1h€ 364–€ 607
AC Expansion Valve (TXV)5.4h€ 243–€ 405
Steering8 operations
OperationLabour hours (OLP)Est. labour cost
Center Link/Drag Link2.0h€ 90–€ 150
Electric Power Steering Module2.0h€ 90–€ 150
Electric Power Steering Motor3.4h€ 153–€ 255
Idler Arm1.4h€ 62–€ 105
Pitman Arm1.6h€ 72–€ 120
Power Steering Fluid Flush0.7h€ 31–€ 52
Power Steering Gear Box4.7h€ 211–€ 352
Power Steering Hose - High Pressure1.4h€ 62–€ 105
Suspension8 operations
OperationLabour hours (OLP)Est. labour cost
Air Line1.4h€ 62–€ 105
Air Spring/Air Bag2.0h€ 90–€ 150
Air Suspension Compressor2.0h€ 90–€ 150
Air Suspension Height Sensor1.4h€ 62–€ 105
Air Suspension Valve Block2.7h€ 121–€ 202
Ball Joint - Lower2.4h€ 108–€ 180
Ball Joint - Upper2.0h€ 90–€ 150
Ball Joints - Upper and Lower4.1h€ 184–€ 307
Transmission8 operations
OperationLabour hours (OLP)Est. labour cost
Kickdown Cable1.1h€ 49–€ 82
Neutral Safety Switch1.4h€ 62–€ 105
Overdrive Solenoid2.7h€ 121–€ 202
Shift Cable2.0h€ 90–€ 150
Shift Linkage1.4h€ 62–€ 105
Shift Solenoid - Single4.7h€ 211–€ 352
Shift Solenoids - All10.1h€ 454–€ 757
Torque Converter7.8h€ 351–€ 585
💵 WORKSHOP LABOUR RATES BY COUNTRY

Average independent-workshop hourly labour rates, to estimate repair costs in your country.

🇩🇪Germany€95/h
🇪🇸Spain€55/h
🇫🇷France€75/h
🇮🇹Italy€45/h
🇬🇧UK£80/h
🇺🇸USA$120/h
Reference rate
€45/h
Source: Eurostat 2024
💧 FLUIDS & LUBRICANTS
Engine oil
Engine oil
BMW TwinPower Turbo 5W-30
With filter change
5.5 L
Coolant
Coolant
BMW Coolant (Blue)
Use pre-mixed or mix 50/50 with distilled water
10.0 L
Brake fluid
Brake fluid
DOT 4 LV Brake Fluid
Replace when moisture content exceeds 3% or every 2-3 years
Automatic transmission fluid
ZF Lifeguard 6
10.0 L
Power steering fluid
Pentosin CHF 11S
1.0 L
Washer fluid
Windshield Washer Fluid
Refill as needed. Use winter-rated in cold climates.
3.5 L
Rear Diff
BMW Differential Fluid SAF-XO
Limited-slip additive may be required
2.0 L
📋 RECALLS & TSB (0)

No official recall verified for this vehicle in the NHTSA database.

🔴 DASHBOARD WARNING LIGHTS — UNIVERSAL GUIDE

58 warning lights classified by urgency. Appears on your vehicle? Check the urgency level.

Show all dashboard warning lights
🔴 IMMEDIATE STOP — pull over
Oil Pressure WarningEngine
Engine Temperature WarningCooling
!BRAKE
Brake System WarningBrakes
K
Immobilizer / Key FaultSecurity
Run-Flat Warning (BMW) (Bmw)Tyres
🟠 WARNING — check soon
Malfunction Indicator Light (MIL) / Check EngineEngine
Diesel Particulate Filter (DPF)Emissions
+−
Battery / Charging SystemElectrical
Low Fuel WarningFuel
!BRAKE
ABS WarningBrakes
!BRAKE
Brake Pad Wear IndicatorBrakes
!BRAKE
Electronic Parking Brake (EPB)Brakes
!
Power Steering WarningSteering
ESC / Stability Control FaultChassis
Tire Pressure Warning (TPMS)Chassis
Transmission Temperature WarningTransmission
Transmission / Gearbox FaultTransmission
Airbag / SRS WarningActive safety
EGR / Exhaust Gas Recirculation FaultEmissions
Catalytic Converter / Emissions FaultEmissions
AdBlue / DEF Level LowEmissions
Coolant Level LowCooling
Hybrid / EV System WarningHybrid
EV Charge System FaultHybrid
12V Battery (Hybrid/EV Auxiliary)Hybrid
S
Suspension Fault / Air SuspensionSuspension
N
CAN Bus / Network Communication FaultNetwork
Water in Fuel FilterFuel
Diesel Injector FaultFuel
!
Steering Angle Sensor FaultSteering
Turbo / Boost Pressure FaultEngine
Regenerative Braking Fault (Hybrid/EV)Hybrid
CBS — Brake Fluid (BMW) (Bmw)Brakes
🟡 MONITOR
Fuel Cap / Evap SystemEmissions
?
4WD / AWD SystemDrivetrain
L
Bulb Failure WarningLighting
L
Headlight Range / Leveling FaultLighting
Service / Maintenance DueMaintenance
AC
A/C System FaultHvac
Clutch Wear WarningTransmission
A
Cruise Control / ACC FaultADAS
CBS — Oil Service (BMW) (Bmw)Engine
iDrive System Fault (Bmw)Electrical
DSC OFF (BMW) (Bmw)Chassis
🔵 INFORMATION
Engine Temperature Low (Blue)Cooling
Glow Plug / Diesel PreheatEngine
Traction Control / ESC OffChassis
Seatbelt ReminderActive safety
L
Rear Fog Light IndicatorLighting
A
Lane Departure / LDWS WarningADAS
A
Forward Collision Warning (FCW/AEB)ADAS
A
Blind Spot Monitor FaultADAS
A
Rear Parking Sensor / Camera FaultADAS
Windshield Washer Fluid LowMaintenance
!
Door Open WarningBody
!
Hood / Trunk Open WarningBody
Gear Shift Indicator (Manual)Transmission
Sport / Performance Mode ActiveTransmission

Frequently Asked Questions

What is the right battery for the Bmw Z4-30I (2003–2008)?

The battery specified for the Bmw Z4-30I (2003–2008) is group H7 (BCI), with a cold cranking rating of 760A. See the Battery section on this page for the main cross-references between brands.

What engine oil should I use on the Bmw Z4-30I (2003–2008)?

The engine oil specification for the Bmw Z4-30I (2003–2008) is BMW TwinPower Turbo 5W-30. Always use the viscosity grade approved by the manufacturer: a different oil can reduce engine protection and void the warranty. Check the change interval in the Maintenance section.

Which OBD2 fault codes are commonly documented for the Bmw Z4-30I (2003–2008)?

Commonly documented OBD2 codes across many vehicles include: P0420, P0300, P0171. Find the full description, likely causes and estimated repair costs in the OBD2 Codes section on this page.

How often should the Bmw Z4-30I (2003–2008) be serviced?

Routine maintenance for the Bmw Z4-30I (2003–2008) typically includes an oil change every 6,000–9,000 miles (10,000–15,000 km), an air filter every 12,000–18,000 miles (20,000–30,000 km) and a brake inspection every 12,000 miles (20,000 km). Check the full plan with specific intervals in the Scheduled Maintenance section on this page.

Have a specific fault code on your Bmw Z4-30I (2003–2008)? Search the code in the OBD2 section of this page or use the full TroubleAtlas DTC database. Need tyres? Compare prices and compatible sizes in the TroubleAtlas comparator.

More Bmw modelsCompare tyresSearch OBD2 code
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