2004 BMW Z4 problems & reliability
411 owner complaints filed with NHTSA for the 2004 BMW Z4, alongside 1 safety recall campaign. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
Federal crash records (FARS 2020–2023): 2004 BMW Z4 vehicles were involved in 3 fatal crashes with 3 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Steering | 378 | 92% |
| Air Bags | 18 | 4% |
| Electrical System | 14 | 3% |
| Exterior Lighting | 6 | 1% |
| Electronic Stability Control (esc) | 3 | 1% |
| Power Train | 3 | 1% |
| Structure | 3 | 1% |
| Visibility/wiper | 3 | 1% |
| Service Brakes | 2 | 0% |
| Equipment Adaptive/mobility | 1 | 0% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 47,000 miles (middle 50% between 30,000 and 67,000 miles), based on 370 complaints that included mileage.
Complaints by incident year
What owners report
“Twice this month, while operating the vehicle, the power steering completely stopped functioning, causing the vehicle to be almost uncontrollable. No prior warning light. When I purchased the vehicle in 2018, the same problem occurred and the dealer replaced the steering column under warranty. In researching online I…”
Steering · filed Jun 9, 2025
“Power steering wheel went out of power during a trip at about 70mph. Yellow light at the dashboard went ON then so, car became imposible to drive or so.”
Steering · filed Jun 3, 2025
“The electric steering gets sticky when very often. It feels locked in its position and requires extra force to unstick, once its past the sticking point it over corrects and causes the vehicle to swerve. This failure seems to be quite common and is well known. It seems to be a manufacturing defect inside the electric…”
Steering · filed Feb 12, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Sticky Steering
Preliminary Evaluation PE10020 · opened Jun 28, 2010 · closed Jun 28, 2011
- BMW AIRBAG LIGHT ILLUMINATION
Engineering Analysis EA08001 · opened Jan 4, 2008 · closed Dec 31, 2008 · led to recall 08V384000
Technical service bulletins
42 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2004 BMW Z4. The 10 most recent:
The basic conditions for initializing the power windows are not met.
B510819 · Service Bulletin/Repair Instructions · issued Jan 16, 2024
The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information…
B611305 · Service Bulletin/Repair Instructions · issued Jan 11, 2024
Vehicle cannot be opened or closed using comfort access, engine start is not possible, and the vehicle may not start when placing the key against the steering column.
B662419 · Service Bulletin/Repair Instructions · issued Sep 1, 2022
Diagnosis of Compound Brake System Complaints in M Vehicles: 1. Visible cracks are caused by high thermal stresses during rapid heating and cooling of the brake discs. Braking from high speed with cold brake components…
B340414 · Service Bulletin/Repair Instructions · issued Apr 1, 2021
Discharged Battery Energy Diagnosis Must Be Performed: The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on…
B611305 · Service Bulletin/Repair Instructions · issued Oct 1, 2020
Power Reduction FC2A82 Intake VANOS and/or FC2 A87 Exhaust VANOS Camshaft Fault: The "Service Engine Soon" (MIL) lamp is illuminated and engine power reduction is perceived. This situation can occur after driving for…
B110208 · Service Bulletin/Repair Instructions · issued Apr 1, 2020
"Outside Door Mirror Moves when Locking or Unlocking the Vehicle. The door mirror tilts immediately after unlocking or locking. The mirror position does not correspond to the memory position preset by the customer…
513608 · Service Bulletin/Repair Instructions · issued Jul 10, 2019
NAVIGATION SYSTEM: REPORTING MISSING OR INCORRECT ROAD MAP DATA: The route guidance is inaccurate and therefore irritating to the customer; or it is not possible to locate certain addresses, for instance:
B650709 · Service Bulletin/Repair Instructions · issued Jun 1, 2018
NAVIGATION SYSTEM: REPORTING MISSING OR INCORRECT ROAD MAP DATA: The route guidance is inaccurate and therefore irritating to the customer; or it is not possible to locate certain addresses, for instance:
B650709 · Service Bulletin/Repair Instructions · issued May 1, 2018
Whistling Noise Coming from the Center Vent - A/C is Off . A very high pitched whistling or beeping noise is heard coming from the center vents. The flow of refrigerant through the expansion valve at certain temperature…
B650709 · Service Bulletin/Repair Instructions · issued Jan 1, 2016
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2004 BMW Z4 has 1 NHTSA recall campaign — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2004 BMW Z4?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 47,000 miles — budget accordingly if the car is approaching that mileage.