2003 BMW Z4 Body and structure Problems
- Complaints
- 8about this part
- Share
- 2%of 414 total for the year
- Median mileage
- 59,435miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 8 complaints about the body and structure of the 2003 BMW Z4, 2% of the 414 complaints for this model year. Where a mileage was given, the median is 59,435 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Had been driving on the freeway for over 45 minutes when all off sudden the drivers door on our 2003 Bmw Z4 popped open. Both of my hands were on the steering wheel when this occurred.”
NHTSA complaint #10326411, filed 2010-04, 61,252 miles“2003 Bmw z-8. A number of owners have reported damage to the aluminum frame at the shock towers. As this affects the suspension and steering there is the potential for accidents resulting from this damage. Bmw has been aware of this problem for a while and is not responding with a fix nor is it notifying owners of this condition. I believe Bmw has a similar problem with other models. Note that the z8 model is not listed in your database so I chose Z4 from the pull down list.”
NHTSA complaint #10149088, filed 2006-01“The contact owns a 2003 Bmw Z4. The contact stated that the passenger side door would open independently at any time while the vehicle was in motion. The dealer was notified and was in the process of diagnosing the failure. The manufacturer was not contacted. The vehicle was not yet repaired. The failure mileage was 125,000 and current mileage was 130,000.”
NHTSA complaint #10414676, filed 2011-07, 125,000 miles“The contact owns a 2003 BMW Z4. The contact stated that the coolant warning light illuminated. The contact then stated that she noticed smoke underneath the hood of the vehicle. The contact stated that upon inspecting the vehicle, she noticed a leak on the ground located near the rear passenger’s side tire. Additionally, the contact then stated that while operating the convertible drop top, she heard an abnormal sound in the motor. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 64,000.”
NHTSA complaint #11523426, filed 2023-05, 64,000 miles“The contact owns a 2003 Bmw Z4. The contact stated that he cannot internally or externally open the passenger side door. The failure would prevent him from exiting the vehicle in the event of an emergency. The vehicle has not been inspected to determine the cause of the failure. The manufacturer did not assist. The failure and current mileages were 30,000.”
NHTSA complaint #10266833, filed 2009-04, 30,000 milesRelated service bulletins
- 10150173Nov 1, 2013"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…
- 10037464Nov 1, 2010Bmw: water is leaking into the luggage compartment due to a damaged seal on rear vents.
Body and structure: other model years
Other parts of the 2003 BMW Z4
342 complaintsAir bags
31 complaintsElectrical system
13 complaintsEngine cooling
11 complaintsTransmission and drivetrain
7 complaintsFuel system
6 complaintsVehicle speed control
6 complaintsOther or unknown
5 complaintsLatches, locks and linkages
4 complaintsSeat belts
4 complaintsSuspension
4 complaintsEquipment
3 complaints
← All problems reported for the 2003 BMW Z4
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology