There are 6 owner-reported engine complaints for the 2006 BMW Z4in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2006 BMW Z4. The contact received notification of NHTSA Campaign Number: 22V119000 (Engine and Engine Cooling) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic who diagnosed that the PCV valve heater needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 50,000. VIN tool confirms parts not available.
The contact owns a 2006 BMW Z4. The contact stated that while operating the vehicle, the check engine warning light illuminated and the vehicle lost motive power and stalled. Additionally, there was a burning odor on the inside and outside of the vehicle. The vehicle was taken to an independent mechanic who changed the engine spark plugs however, the failure persisted. The local dealer and manufacturer were not notified of the failure. The failure mileage was 120,000.
The contact owns a 2006 BMW Z4. The contact received a notification for NHTSA Campaign Number: 22V119000 (Engine and Engine Cooling) however, the part to do the recall repair was unavailable. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer had been notified of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. VIN tool confirms parts not available.
The contact owns a 2006 BMW Z4. The contact stated that while at a complete stop at the traffic light, the vehicle overheated and stalled. The coolant temperature warning light illuminated. The contact waited for the vehicle to cool down and then restarted the vehicle and continued driving. The contact stated that the failure reoccurred several times. The vehicle was towed to the dealer several times. The dealer completed the engine lifters replacement and other unknown repairs however, the failure persisted. The contact stated while stopped at the traffic light, the vehicle began to overheat significantly and stalled. There was no warning light illuminated. The contact noticed smoke coming from underneath the hood of the vehicle. The contact immediately exited the vehicle. The contact later pushed the vehicle to the side of the road with assistance. The vehicle was towed to an independent mechanic where it was diagnosed that the engine needed to be replaced. The contact later received notification of NHTSA Campaign Number: 19V273000 (Engine and Engine Cooling) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 52,000. VIN tool confirms parts not available.
TL* THE CONTACT OWNS A 2006 BMW Z4. THE CONTACT STATED THAT WHILE DRIVING 60 MPH, THE ENGINE SUDDENLY LOST POWER. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE TECHNICIAN DIAGNOSED THAT THE INTAKE CAM AND THE VALVES NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 45,000.
TL* THE CONTACT OWNS A 2006 BMW Z4. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 45 MPH, THE VEHICLE SUDDENLY STALLED. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE FAILURE WAS UNABLE TO BE DIAGNOSED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE AND CURRENT MILEAGE WAS UNKNOWN. THE MECHANIC DIAGNOSED THE ENGINE AS HAVING LOW COMPRESSION AND HE HEARD THE TIMING CHAIN FLAPPING. THE MECHANIC RECOMMENDED THE DEALER TAKING A LOOK AT THE VEHICLE. THE DEALER DETERMINED THE BOLTS HOLDING THE TIMING CHAIN TENSIONER HAD SHEARED OFF. UPDATED 07/15/14
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026