IllustrationThe passenger air bag suddenly deployed while the car was parked in my driveway, braking the dashboard and the windshield.
2005 BMW Z4
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all Z4 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
420–25K
4825–50K
4750–75K
2075–100K
10100–150K
2150K+
169 reports with mileage · 21 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Steering. Review the 172 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Air Bags. Review the 9 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
2 crash reports0 fire reports2 injury reports
Air Bags complaints
9 reportsPassenger airbag dash deploys while car is parked. It’s deploy from nothing.
PASSENGER SIDE AIRBAG DEPLOYED. FACTS: VEHICLE WAS PARKED AND NOT RUNNING. KEY WAS NOT IN THE IGNITION. THE VEHICLE SUSTAINED NO IMPACT ' NO COLLISION. *TR
6/25/18 BMW WORKED ON MY CAR AND SUPPOSEDLY FIXED THE PROBLEM (KNEE AIR BAG R & R , RESISTANCE TOO LOW IN AIRBAG, REPLACED AIRBAG, INTERNAL MODULE FAILURE, SRS B PILLAR RIGHT MODULE) . 12/31/18 AIR BAG LIGHT STAYS ON CONSISTENTLY WHILE DRIVING
AIR BAG LIGHT STAYS ON WHEN CAR IS RUNNING.
TL* THE CONTACT OWNED A 2005 BMW Z4. WHILE THE CONTACT'S HUSBAND WAS DRIVING 65 MPH, THE VEHICLE HYDROPLANED AND CRASHED INTO THE REAR OF THE PRECEDING VEHICLE. THE AIR BAG DEPLOYED WITH METAL SHARDS AND A METAL ROD GOING THROUGH THE HAND OF THE DRIVER. THE CONTACT ALSO SUSTAINED MINOR BURNS ON THE HAND AND FEET FROM THE GASES W…
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TL* THE CONTACT OWNED A 2005 BMW Z4. WHILE THE CONTACT'S HUSBAND WAS DRIVING 65 MPH, THE VEHICLE HYDROPLANED AND CRASHED INTO THE REAR OF THE PRECEDING VEHICLE. THE AIR BAG DEPLOYED WITH METAL SHARDS AND A METAL ROD GOING THROUGH THE HAND OF THE DRIVER. THE CONTACT ALSO SUSTAINED MINOR BURNS ON THE HAND AND FEET FROM THE GASES WHEN THE AIR BAG DEPLOYED. MEDICAL ATTENTION WAS SOUGHT SEVERAL DAYS AFTER THE CRASH. A POLICE REPORT WAS FILED. THE VEHICLE WAS DESTROYED AND TOWED TO AN INDEPENDENT FACILITY. A DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 54,000.
FIRST THE CHECK ENGINE LIGHT ON, I WENT TO HOUSTON MOMENTUM BMW DEALER TO CHECK AND THEY FOUND OUT THAT THERE WAS A FAULTY SIGNAL FROM SOMEWHERE THEY WERE NOT SURE ABOUT. THEY GAVE ME AN ESTIMATE FOR THAN A THOUSAND DOLLARS TO FIND IT AND REPAIR IT. IT WOULD COST MORE IF THEY FOUND OUT THE REAL PROBLEM. I TOLD THEM THIS SHOULD B…
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FIRST THE CHECK ENGINE LIGHT ON, I WENT TO HOUSTON MOMENTUM BMW DEALER TO CHECK AND THEY FOUND OUT THAT THERE WAS A FAULTY SIGNAL FROM SOMEWHERE THEY WERE NOT SURE ABOUT. THEY GAVE ME AN ESTIMATE FOR THAN A THOUSAND DOLLARS TO FIND IT AND REPAIR IT. IT WOULD COST MORE IF THEY FOUND OUT THE REAL PROBLEM. I TOLD THEM THIS SHOULD BE UNDER BMW WARRANTY, BUT THEY SAID IT WASN'T. I REFUSED THE WORK. THIS CASE HAPPENED FEW YEARS AGO. NOW I HAVE AIR BAG LIGHT ON, I DON'T KNOW WHY. I DON'T DARE TO GO BACK TO DEALER TO CHECK BECAUSE I'M AFRAID THEY WILL RIP ME OFF AGAIN AND AGAIN. I HOPE ONE DAY I CAN GET RID OF BMW AND FIND A MORE RELIABLE CAR TO DRIVE. *TR
2005 BMW Z4 ROADSTER. CONSUMER WRITES IN REGARDS TO AIR BAG SYSTEM ISSUES. *SMD THE CONSUMER STATED HE RECENTLY DROVE THE VEHICLE, AND NOTICED THE AIR BAG LIGHT WAS ON. THE DEALER INFORMED HIM, BMW HAD EXTENDED THE WARRANTY PERIOD TO 10 YEARS. THE CONSUMER ASSUMED, THE AIR BAG ISSUE WOULD BE COVERED UNDER THE EXTENDED WARRAN…
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2005 BMW Z4 ROADSTER. CONSUMER WRITES IN REGARDS TO AIR BAG SYSTEM ISSUES. *SMD THE CONSUMER STATED HE RECENTLY DROVE THE VEHICLE, AND NOTICED THE AIR BAG LIGHT WAS ON. THE DEALER INFORMED HIM, BMW HAD EXTENDED THE WARRANTY PERIOD TO 10 YEARS. THE CONSUMER ASSUMED, THE AIR BAG ISSUE WOULD BE COVERED UNDER THE EXTENDED WARRANTY. HOWEVER, HE RECEIVED A CALL FROM THE DEALER, STATING THEY FOUND THE PROBLEM IN THE AIR BAG SYSTEM, WHICH WAS A WIRE, BUT IT WAS NOT COVERED UNDER THE EXTENDED WARRANTY. THE DEALER STATED THE COST TO REPLACE THE WIRE WAS $ 1,056.82, PLUS A CHARGE OF $ 141.88 JUST TO FIND THE PROBLEM. *JB
ON AUGUST 7, 2007 I TOOK MY CAR TO STERLING BMW IN NEWPORT BEACH, CA BECAUSE I NOTICED THE AIRBAG MALFUNCTION LIGHTS WERE ON ALONG WITH OTHER ELECTRICAL ISSUES. AFTER THEY HAD INSPECTED MY VEHICLE FOR THREE DAYS I WAS INFORMED THAT THE AIRBAG/ELECTRICAL PROBLEM WOULD NOT BE COVERED BY THE BMW FACTORY WARRANTY, AND THE SERVICE DE…
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ON AUGUST 7, 2007 I TOOK MY CAR TO STERLING BMW IN NEWPORT BEACH, CA BECAUSE I NOTICED THE AIRBAG MALFUNCTION LIGHTS WERE ON ALONG WITH OTHER ELECTRICAL ISSUES. AFTER THEY HAD INSPECTED MY VEHICLE FOR THREE DAYS I WAS INFORMED THAT THE AIRBAG/ELECTRICAL PROBLEM WOULD NOT BE COVERED BY THE BMW FACTORY WARRANTY, AND THE SERVICE DEPARTMENT RECOMMENDED THAT I FILE A CLAIM WITH MY INSURANCE CARRIER. OBVIOUSLY MY INSURANCE COMPANY DENIED THE CLAIM, BECAUSE AUTOMOBILE INSURANCE DOES NOT COVER LOSS DUE TO WEAR AND TEAR, MECHANICAL OR ELECTRICAL BREAKDOWN/FAILURE. IN ADDITION, STERLING BMW CHARGED ME $260.00 FOR THE LOANER CAR THEY PROVIDED FOR THE THREE DAYS WHILE MY CAR WAS BEING INSPECTED. STERLING BMW GAVE ME A VERBAL ESTIMATE OF APPROXIMATELY $10,000.00 IN ADDITIONAL WORK NEEDED TO REPAIR ALL THE ELECTRICAL/AIRBAG ISSUES. WHEN I TOOK THE CAR TO IRVINE BMW FOR ANOTHER ESTIMATE, THEY ADVISED ME THAT THEY COULD TAKE CARE OF THE PROBLEM, HOWEVER AFTER THREE DAYS I WAS AGAIN INFORMED THAT THEY THE AIRBAG/ELECTRICAL PROBLEM WOULD NOT BE COVERED UNDER THE WARRANTY. I MOVED TO CALIFORNIA ABOUT ONE YEAR AGO AND PURCHASED THIS VEHICLE ON FROM EXCALIBUR IMPORTS IN STUDIO CITY, CA ON MARCH 28, 2006. ALTHOUGH MY PREVIOUS VEHICLE WAS A MERCEDES BENZ, I DECIDED TO PURCHASE A BMW AND BENEFIT FROM THE EXTRAORDINARY CUSTOMER SERVICE OF BMW. THIS IS, IN FACT, MY FIRST EXPERIENCE WITH BMW. I HAVE ALWAYS TAKEN EXCELLENT CARE OF MY CAR; IT HAS ALWAYS BEEN GARAGED, AND MAINTAINED BY BMW DEALERS. I HAVE ALWAYS USE PREMIUM GAS TO ENSURE QUALITY OF PERFORMANCE AND MAINTENANCE. TO MY REGRET, I HAVE BEEN DRIVING THIS CAR FOR OVER A YEAR WITHOUT AIRBAG PROTECTION. THE NATURE OF MY JOB REQUIRES ME TO COMMUTE OVER 100 MILES PER DAY ON THE FREEWAY. PLEASE BE ADVISED THAT MY FAMILY AND I ARE EXTREMELY WORRIED ABOUT THE RISKS THAT I AM TAKING BECAUSE OF BMW'S FAILURE TO PROPERLY MAINTAIN MY VEHICLE. I AM A SINGLE MOTHER OF THREE AND FIND I AM NOW AFRAID OF DRIVING BECAUSE OF THE CONSEQUENCES OF AN ACID. *TR
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
2PE10020 · Sticky Steering
Opened Jun 28, 2010 · Closed Jun 28, 2011
Status: closed (inferred from source dates) · Steering; Steering:column; Steering:electric Power Assist System
ODI has evaluated the sticky steering condition, which included reviews of complaints and warranty claims, interviews and surveys of owners of complaint vehicles, road tests of complaint vehicles, and a review of BMW's engineering and test data.ODI found the sticky steering condition does not result in a significant steering effort, thus the impact on the driver's ability to control the vehicle does not appear to be significant.A safety-related defect trend has not been identified at this time and further use of agency resources does not appear to be warranted.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by NHTSA that no safety-related defect exists.The agency will monitor the issue and reserves the right to take future action if warranted by the circumstances.See the attached report for additional information.In addition, during this investigation, ODI became aware of allegations of failure or loss of electric power-assisted steering on the subject vehicles.As a result, ODI is separately reviewing this issue to determine whether additional agency action is needed.
Additional source detail variants (3)
Steering
ODI has evaluated the sticky steering condition, which included reviews of complaints and warranty claims, interviews and surveys of owners of complaint vehicles, road tests of complaint vehicles, and a review of BMW's engineering and test data.ODI found the sticky steering condition does not result in a significant steering effort, thus the impact on the driver's ability to control the vehicle does not appear to be significant.A safety-related defect trend has not been identified at this time and further use of agency resources does not appear to be warranted.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by NHTSA that no safety-related defect exists.The agency will monitor the issue and reserves the right to take future action if warranted by the circumstances.See the attached report for additional information.In addition, during this investigation, ODI became aware of allegations of failure or loss of electric power-assisted steering on the subject vehicles.As a result, ODI is separately reviewing this issue to determine whether additional agency action is needed.
Steering:column
ODI has evaluated the sticky steering condition, which included reviews of complaints and warranty claims, interviews and surveys of owners of complaint vehicles, road tests of complaint vehicles, and a review of BMW's engineering and test data.ODI found the sticky steering condition does not result in a significant steering effort, thus the impact on the driver's ability to control the vehicle does not appear to be significant.A safety-related defect trend has not been identified at this time and further use of agency resources does not appear to be warranted.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by NHTSA that no safety-related defect exists.The agency will monitor the issue and reserves the right to take future action if warranted by the circumstances.See the attached report for additional information.In addition, during this investigation, ODI became aware of allegations of failure or loss of electric power-assisted steering on the subject vehicles.As a result, ODI is separately reviewing this issue to determine whether additional agency action is needed.
Steering:electric Power Assist System
ODI has evaluated the sticky steering condition, which included reviews of complaints and warranty claims, interviews and surveys of owners of complaint vehicles, road tests of complaint vehicles, and a review of BMW's engineering and test data.ODI found the sticky steering condition does not result in a significant steering effort, thus the impact on the driver's ability to control the vehicle does not appear to be significant.A safety-related defect trend has not been identified at this time and further use of agency resources does not appear to be warranted.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by NHTSA that no safety-related defect exists.The agency will monitor the issue and reserves the right to take future action if warranted by the circumstances.See the attached report for additional information.In addition, during this investigation, ODI became aware of allegations of failure or loss of electric power-assisted steering on the subject vehicles.As a result, ODI is separately reviewing this issue to determine whether additional agency action is needed.
EA08001 · BMW Airbag Light Illumination
Opened Jan 4, 2008 · Closed Dec 31, 2008
Status: closed (inferred from source dates) · Air Bags; Air Bags:frontal; Air Bags:frontal:sensor/control MODULE-INACTIVE
BMW IS CONDUCTING A SAFETY RECALL CAMPAIGN ON APPROXIMATELY 200,000 MY04 THROUGH MY06 SUBJECT VEHICLES BUILT THROUGH 11/30/05 TO CORRECT THE FRONT PASSENGER SEAT AIR BAG OCCUPANT DETECTION MAT. THE SPECIFIC VEHICLES INCLUDED IN THE RECALL AREMY04- 06/ 5-SERIES WITH STANDARD AND SPORT SEATS, MY04-06/ X3-SERIES AND MY06/ 3-SERIES WITH SPORT SEATS. IN ADDITION, BMW WILL EXTEND THE WARRANTY COVERAGE OF THE PASSENGER SEAT AIR BAG OCCUPANT DETECTION MAT TO 10-YEAR/UNLIMITED MILEAGE ON APPROXIMATELY 120,000 REMAINING MY04-06 SUBJECT VEHICLES BUILT THROUGH 11/30/05. THE SPECIFIC VEHICLES INCLUDED IN THE EXTENDED WARRANTY ARE MY 06/ 6 SERIES, MY 06/ 3-SERIES WITH STANDARD SEATS, MY04-05/ Z4, MY04-06/ 7 SERIES, MY 06/ X5, AND MY04-06/ 5-SERIES WITH COMFORT SEATS.THE AVERAGE FREQUENCY OF FAILURES AMONG THE EXTENDED WARRANTY GROUPS WAS LESS THAN 1/7TH OF THE RECALL VEHICLE GROUPS.PLEASE SEE BMW'S 08V-384 RECALL NOTIFICATION FOR FURTHER DETAILSDEPENDING ON SEAT CONFIGURATION AND VEHICLE GEOMETRY, THE OCCUPANT DETECTION MAT CAN FATIGUE DURING USE DEPENDING ON THE MANNER AND FREQUENCY OF THE FRONT PASSENGER'S ENTRY AND EXIT.SPECIFICALLY, OVER TIME, MICRO-CRACKS COULD DEVELOP IN THE SIDE FLANKS OF THE MAT CAUSING A BROKEN CIRCUIT.A BROKENCIRCUIT CAN LEAD TO THE DEACTIVATION OF THE PASSENGER AIR BAG AND THE ILLUMINATION OF BOTH THE AIR BAG WARNING LIGHT AND THE PASSENGER AIR BAG LIGHT.
Additional source detail variants (3)
Air Bags
BMW IS CONDUCTING A SAFETY RECALL CAMPAIGN ON APPROXIMATELY 200,000 MY04 THROUGH MY06 SUBJECT VEHICLES BUILT THROUGH 11/30/05 TO CORRECT THE FRONT PASSENGER SEAT AIR BAG OCCUPANT DETECTION MAT. THE SPECIFIC VEHICLES INCLUDED IN THE RECALL AREMY04- 06/ 5-SERIES WITH STANDARD AND SPORT SEATS, MY04-06/ X3-SERIES AND MY06/ 3-SERIES WITH SPORT SEATS. IN ADDITION, BMW WILL EXTEND THE WARRANTY COVERAGE OF THE PASSENGER SEAT AIR BAG OCCUPANT DETECTION MAT TO 10-YEAR/UNLIMITED MILEAGE ON APPROXIMATELY 120,000 REMAINING MY04-06 SUBJECT VEHICLES BUILT THROUGH 11/30/05. THE SPECIFIC VEHICLES INCLUDED IN THE EXTENDED WARRANTY ARE MY 06/ 6 SERIES, MY 06/ 3-SERIES WITH STANDARD SEATS, MY04-05/ Z4, MY04-06/ 7 SERIES, MY 06/ X5, AND MY04-06/ 5-SERIES WITH COMFORT SEATS.THE AVERAGE FREQUENCY OF FAILURES AMONG THE EXTENDED WARRANTY GROUPS WAS LESS THAN 1/7TH OF THE RECALL VEHICLE GROUPS.PLEASE SEE BMW'S 08V-384 RECALL NOTIFICATION FOR FURTHER DETAILSDEPENDING ON SEAT CONFIGURATION AND VEHICLE GEOMETRY, THE OCCUPANT DETECTION MAT CAN FATIGUE DURING USE DEPENDING ON THE MANNER AND FREQUENCY OF THE FRONT PASSENGER'S ENTRY AND EXIT.SPECIFICALLY, OVER TIME, MICRO-CRACKS COULD DEVELOP IN THE SIDE FLANKS OF THE MAT CAUSING A BROKEN CIRCUIT.A BROKENCIRCUIT CAN LEAD TO THE DEACTIVATION OF THE PASSENGER AIR BAG AND THE ILLUMINATION OF BOTH THE AIR BAG WARNING LIGHT AND THE PASSENGER AIR BAG LIGHT.
Air Bags:frontal
BMW IS CONDUCTING A SAFETY RECALL CAMPAIGN ON APPROXIMATELY 200,000 MY04 THROUGH MY06 SUBJECT VEHICLES BUILT THROUGH 11/30/05 TO CORRECT THE FRONT PASSENGER SEAT AIR BAG OCCUPANT DETECTION MAT. THE SPECIFIC VEHICLES INCLUDED IN THE RECALL AREMY04- 06/ 5-SERIES WITH STANDARD AND SPORT SEATS, MY04-06/ X3-SERIES AND MY06/ 3-SERIES WITH SPORT SEATS. IN ADDITION, BMW WILL EXTEND THE WARRANTY COVERAGE OF THE PASSENGER SEAT AIR BAG OCCUPANT DETECTION MAT TO 10-YEAR/UNLIMITED MILEAGE ON APPROXIMATELY 120,000 REMAINING MY04-06 SUBJECT VEHICLES BUILT THROUGH 11/30/05. THE SPECIFIC VEHICLES INCLUDED IN THE EXTENDED WARRANTY ARE MY 06/ 6 SERIES, MY 06/ 3-SERIES WITH STANDARD SEATS, MY04-05/ Z4, MY04-06/ 7 SERIES, MY 06/ X5, AND MY04-06/ 5-SERIES WITH COMFORT SEATS.THE AVERAGE FREQUENCY OF FAILURES AMONG THE EXTENDED WARRANTY GROUPS WAS LESS THAN 1/7TH OF THE RECALL VEHICLE GROUPS.PLEASE SEE BMW'S 08V-384 RECALL NOTIFICATION FOR FURTHER DETAILSDEPENDING ON SEAT CONFIGURATION AND VEHICLE GEOMETRY, THE OCCUPANT DETECTION MAT CAN FATIGUE DURING USE DEPENDING ON THE MANNER AND FREQUENCY OF THE FRONT PASSENGER'S ENTRY AND EXIT.SPECIFICALLY, OVER TIME, MICRO-CRACKS COULD DEVELOP IN THE SIDE FLANKS OF THE MAT CAUSING A BROKEN CIRCUIT.A BROKENCIRCUIT CAN LEAD TO THE DEACTIVATION OF THE PASSENGER AIR BAG AND THE ILLUMINATION OF BOTH THE AIR BAG WARNING LIGHT AND THE PASSENGER AIR BAG LIGHT.
Air Bags:frontal:sensor/control MODULE-INACTIVE
BMW IS CONDUCTING A SAFETY RECALL CAMPAIGN ON APPROXIMATELY 200,000 MY04 THROUGH MY06 SUBJECT VEHICLES BUILT THROUGH 11/30/05 TO CORRECT THE FRONT PASSENGER SEAT AIR BAG OCCUPANT DETECTION MAT. THE SPECIFIC VEHICLES INCLUDED IN THE RECALL AREMY04- 06/ 5-SERIES WITH STANDARD AND SPORT SEATS, MY04-06/ X3-SERIES AND MY06/ 3-SERIES WITH SPORT SEATS. IN ADDITION, BMW WILL EXTEND THE WARRANTY COVERAGE OF THE PASSENGER SEAT AIR BAG OCCUPANT DETECTION MAT TO 10-YEAR/UNLIMITED MILEAGE ON APPROXIMATELY 120,000 REMAINING MY04-06 SUBJECT VEHICLES BUILT THROUGH 11/30/05. THE SPECIFIC VEHICLES INCLUDED IN THE EXTENDED WARRANTY ARE MY 06/ 6 SERIES, MY 06/ 3-SERIES WITH STANDARD SEATS, MY04-05/ Z4, MY04-06/ 7 SERIES, MY 06/ X5, AND MY04-06/ 5-SERIES WITH COMFORT SEATS.THE AVERAGE FREQUENCY OF FAILURES AMONG THE EXTENDED WARRANTY GROUPS WAS LESS THAN 1/7TH OF THE RECALL VEHICLE GROUPS.PLEASE SEE BMW'S 08V-384 RECALL NOTIFICATION FOR FURTHER DETAILSDEPENDING ON SEAT CONFIGURATION AND VEHICLE GEOMETRY, THE OCCUPANT DETECTION MAT CAN FATIGUE DURING USE DEPENDING ON THE MANNER AND FREQUENCY OF THE FRONT PASSENGER'S ENTRY AND EXIT.SPECIFICALLY, OVER TIME, MICRO-CRACKS COULD DEVELOP IN THE SIDE FLANKS OF THE MAT CAUSING A BROKEN CIRCUIT.A BROKENCIRCUIT CAN LEAD TO THE DEACTIVATION OF THE PASSENGER AIR BAG AND THE ILLUMINATION OF BOTH THE AIR BAG WARNING LIGHT AND THE PASSENGER AIR BAG LIGHT.