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2003 BMW Z4

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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When problems were reported

Mileage at the reported incident

355 reports with mileage · 59 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 342 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Air Bags. Review the 31 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 13 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

5 crash reports0 fire reports1 injury reports

Structure complaints

8 reports
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64,000 miles · May 23, 2023
Engine And Engine CoolingStructure

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 con…

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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 ODI #11523426

57,618 miles · Mar 10, 2014
Structure

TL* THE CONTACT OWNS A 2003 BMW Z4. THE CONTACT STATED THAT THE FRONT DRIVER'S SIDE INTERIOR AND EXTERIOR DOOR HANDLES FAILED TO FUNCTION AND THE DOOR WOULD NOT RELEASE OPEN. THE CONTACT EXITED THE VEHICLE FROM THE FRONT PASSENGER'S SIDE DOOR. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND REPAIRED TWICE. THE FAILURE RECURRED…

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TL* THE CONTACT OWNS A 2003 BMW Z4. THE CONTACT STATED THAT THE FRONT DRIVER'S SIDE INTERIOR AND EXTERIOR DOOR HANDLES FAILED TO FUNCTION AND THE DOOR WOULD NOT RELEASE OPEN. THE CONTACT EXITED THE VEHICLE FROM THE FRONT PASSENGER'S SIDE DOOR. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND REPAIRED TWICE. THE FAILURE RECURRED AND THE VEHICLE HAD NOT BEEN REPAIRED FOR MOST RECENT FAILURE. THE MANUFACTURER WAS NOT NOTIFIED OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 57,618. *TR

NHTSA ODI #10568226

43,730 miles · Oct 30, 2011
Air BagsLatches/locks/linkagesSteering

1.VEHICLE UNSAFE TO DRIVE; UNABLE TO MAINTAIN STEERING OR KEEP VEHICLE ON THE ROAD SAFELY. 2.VIBRATIONS WHILE DRIVING VEHICLE 3.MANUAL GEAR BOX; SHIFTING THROUGH GEARS NOT SMOOTH, NOT ENGAGING SMOOTHLY 4.WATER LEAKING INSIDE OF VEHICLE TRUNK AND REAR SEAT AREAS. VEHICLE TRUNK AREA WAS SATURATED WITH WATER AFTER RAINING; FILL…

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1.VEHICLE UNSAFE TO DRIVE; UNABLE TO MAINTAIN STEERING OR KEEP VEHICLE ON THE ROAD SAFELY. 2.VIBRATIONS WHILE DRIVING VEHICLE 3.MANUAL GEAR BOX; SHIFTING THROUGH GEARS NOT SMOOTH, NOT ENGAGING SMOOTHLY 4.WATER LEAKING INSIDE OF VEHICLE TRUNK AND REAR SEAT AREAS. VEHICLE TRUNK AREA WAS SATURATED WITH WATER AFTER RAINING; FILLING WATER OVER THE BATTERY BOX AND CARPETS, SHORTING OUT ELECTRONICS. 5.OUTSIDE OF VEHICLE; PLASTIC COMPONENTS EARLY DETERIORATION; FRONT WINDSHIELD WIPER AREA BLACK PLASTIC COWL AND ANTENNA. INSIDE OF VEHICLE BLACK PLASTIC COVER FOR CONVERTIBLE TOP 6.RAIN SENSOR INOP 7.DOOR LOCKS INOP/INTERMITTENT 8.WINDOWS REGULATORS PLASTIC BROKEN. *TR

NHTSA ODI #10433599

125,000 miles · Jul 22, 2011
Structure

TL* 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…

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TL* 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 ODI #10414676

61,252 miles · Apr 19, 2010
Structure

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. *TR

NHTSA ODI #10326411

30,000 miles · Apr 27, 2009
Latches/locks/linkagesStructure

TL*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 FAILU…

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TL*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 ODI #10266833

Mileage unknown · Jan 31, 2006
Structure

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 CONDIT…

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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. *NM

NHTSA ODI #10149088

Mileage unknown · Jan 30, 2006
StructureSuspension

THERE IS A POTENTIAL PROBLEM WITH THE FRONT SHOCK TOWER SUPPORTS AND FRONT CHASSIS ASSEMBLY ON THE BMW Z8. IT IS PRONE TO DEFORMATION OF THE SHOCK TOWERS AND FLEXING OF THE FRONT CHASSIS ASSEMBLY, LEADING TO STEERING PROBLEMS AND ALIGNMENT PROBLEMS. THIS PROBLEM HAS BEEN KNOWN BY BMW AG IN GERMANY SINCE AT LEAST NOVEMBER 200…

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THERE IS A POTENTIAL PROBLEM WITH THE FRONT SHOCK TOWER SUPPORTS AND FRONT CHASSIS ASSEMBLY ON THE BMW Z8. IT IS PRONE TO DEFORMATION OF THE SHOCK TOWERS AND FLEXING OF THE FRONT CHASSIS ASSEMBLY, LEADING TO STEERING PROBLEMS AND ALIGNMENT PROBLEMS. THIS PROBLEM HAS BEEN KNOWN BY BMW AG IN GERMANY SINCE AT LEAST NOVEMBER 2005, BUT AS OF TODAY, THERE HAS BEEN NO OFFICIAL RESPONSE FROM BMW AG OR BMW IN THE USA TO THE OWNERS OF THIS VEHICLE. THE PROBLEM IS THAT THE FRAME / CHASSIS OF THE BMW Z8 IS MADE OF ALUMINUM, AND AS SUCH, CAN UNDERGO A GREATER DEGREE OF FATIGUE. FAILURE SHOULD THERE BE A DEFECT IN THE DESIGN, MATERIALS OR BOTH. THIS DEFECT COULD LEAD OR HAS ALREADY LEAD TO THE FRONT STRUT / SHOCK TOWER ASSEMBLY DEFORMING AT ITS ATTACHMENT POINTS, AND WILL OR COULD LEAD TO A FAILURE OF THE ATTACHMENT, CAUSING A SERIOUS OR FATAL ACCIDENT. THUS FAR, BMW HAS NOT RESPONDED TO COMPLAINTS. THIS WAS A LIMITED PRODUCTION LUXURY SPORTS CAR OF WHICH 5,550 WERE PRODUCED AND ABOUT 2,550 WERE SOLD HERE IN THE USA. BASED ON PRELIMINARY DATA FROM OUR ON-LINE CLUB MEMBERSHIP IT APPEARED THAT AT LEAST 1 IN 3 VEHICLES WERE AFFECTED BY THIS DEFECT. WHAT WE DO NOT KNOW IS WHETHER THE VEHICLE IS OR IS NOT SAFE TO DRIVE? BMW IS SILENT AS FAR AS THEIR CUSTOMERS ARE CONSIDERED, AND WE NEED HELP TO INVESTIGATE THIS POTENTIAL SAFETY CONCERN.*AK

NHTSA ODI #10148964

Official recalls

4

04V247000 · Air Bags

May 24, 2004

ON CERTAIN PASSENGER VEHICLES, INCOMPATIBLE ELECTRONIC AIR BAG SYSTEM PROCESSORS MAY HAVE BEEN INSTALLED.

Consequence & remedy

Consequence: IN THE EVENT OF A CRASH, AIR BAG DEPLOYMENT MAY NOT OCCUR, INCREASING THE RISK OF INJURIES TO THE DRIVER AND/OR FRONT PASSENGER.

Remedy: DEALERS WILL INSPECT AND, IF NECESSARY, REPLACE THE AIR BAG SYSTEM PROCESSORS. THE RECALL BEGAN JUNE 11, 2004. OWNERS SHOULD CONTACT BMW AT 1-800-831-1117.

04V182000 · Fuel System, Gasoline:delivery:fuel Pump

Apr 12, 2004

ON CERTAIN PASSENGER VEHICLES, UNDER CERTAIN ENVIRONMENTAL CONDITIONS, A VAPOR LOCK IN THE FUEL PUMP COULD OCCUR CAUSING THE ENGINE TO STALL. IF THIS WERE TO HAPPEN, THE ENGINE WOULD NOT BE ABLE TO BE RESTARTED FOR APPROXIMATELY 15 TO 20 MINUTES.

Consequence & remedy

Consequence: IF STALLING WERE TO OCCUR, THE DRIVER WOULD BE UNABLE TO MAINTAIN VEHICLE SPEED OR ACCELERATE, INCREASING THE RISK OF A CRASH.

Remedy: DEALERS WILL INSTALL A RESISTOR IN THE ELECTRICAL LINE POWERING THE FUEL PUMP IN ORDER TO PREVENT AN OCCURRENCE OF VAPOR LOCK. THE RECALL BEGAN MAY 11, 2004. OWNERS SHOULD CONTACT BMW AT 1-800-831-1117.

03V214000 · Tires

Jun 9, 2003

ON CERTAIN VEHICLES EQUIPPED WITH 18" TIRES, IT IS POSSIBLE THAT THE TIRE HAS BEEN DAMAGED DURING THE MOUNTING PROCESS TO THE RIM.

Consequence & remedy

Consequence: CONSEQUENTLY, A LOSS OF TIRE PRESSURE, OR A TIRE FAILURE, COULD OCCUR. DEPENDING ON TRAFFIC CONDITIONS AND THE DRIVER'S REACTIONS, THIS COULD LEAD TO A CRASH.

Remedy: DEALERS WILL UNSEAT THE TIRE FROM ITS RIM, INSPECT FOR ANY DAMAGE, AND THEN RESEAT THE TIRE TO ITS RIM. IF INSPECTION REVEALS THAT A FRONT TIRE HAS INCURRED DAMAGE DURING THE MOUNTING PROCESS, IT WILL BE REPLACED. OWNER NOTIFICATION BEGAN JULY 14, 2003. OWNERS SHOULD CONTACT BMW AT 1-800-831-1117.

03V032000 · Seat Belts:front:buckle Assembly

Feb 4, 2003

ON CERTAIN PASSENGER VEHICLES, THE CONNECTION OF THE SAFETY BELT BUCKLE TO THE STEEL ROPE OF THE TENSIONER DOES NOT MEET BMW SPECIFICATIONS. IN SEVERE FRONTAL CRASHES, THIS CONNECTION CAN DETACH.

Consequence & remedy

Consequence: IF THE CONNECTION DETACHES, THE PROTECTION PROVIDED BY THE SAFETY BELT IS LIKELY TO BE IMPAIRED, AND SERIOUS INJURIES TO THE DRIVER AND/OR FRONT PASSENGER COULD OCCUR THAT MIGHT OTHERWISE BE MITIGATED.

Remedy: DEALERS WILL INSPECT BOTH FRONT SAFETY BELT TENSIONER AND BUCKLE ASSEMBLIES, AND IF NECESSARY, REPLACE THESE PARTS. OWNER NOTIFICATION BEGAN MARCH 19, 2003. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT BMW AT 1-800-831-1117.

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

1

PE10020 · 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.