2004 BMW Z4 Other or unknown Problems
- Complaints
- 1about this part
- Share
- 0%of 411 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the other or unknown of the 2004 BMW Z4, 0% of the 411 complaints for this model year.
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.
“The Electric Top Malfunctions because of fault design Behind the driver seat is a hydraulic cylinder that sits in a cabin. Water leaks into the cabin causing the hydraulics to go out. The cabin fills up with water, and submerges the pump. This is a major design flaw. It is common with all Z4 models 2003 - 2008. I have a roadster rental business, comprised specifically of the Z4 model. I can give you 4 different vehicles I own as an example. Plus I can quote every seller, that says the top does not work. …”
NHTSA complaint #11434978, filed 2021-09Other or unknown: other model years
Other parts of the 2004 BMW Z4
378 complaintsAir bags
18 complaintsElectrical system
14 complaintsExterior lighting
6 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsBrakes
3 complaintsElectronic stability control
3 complaintsBody and structure
3 complaintsTransmission and drivetrain
3 complaintsEquipment
1 complaintsSeats
1 complaintsSuspension
1 complaints
← All problems reported for the 2004 BMW Z4
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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