Climate control and thermal performance
Track weak cooling or heating, odors, intermittent operation, ambient conditions, and parts or refrigerant work performed.
BMW model guide
BMW Z4 Lemon Law Claims
If your BMW Z4 keeps returning for warranty repair, remains out of service, or has an unresolved condition, build the complete record before deciding what California remedies may apply.
- Model- and configuration-aware evidence guide
- California warranty and repair framework
- Primary legal and vehicle-safety sources
Free case review
Tell us what happened.
Share a few details. The firm will contact you to discuss possible next steps.
Independent model research guide
Build the BMW Z4 repair record before drawing conclusions.
A strong model-level review separates searchable vehicle information from proof. The useful evidence is the warranty and chronological record showing what this vehicle did, what was reported, and what the authorized facility attempted.
Recall, campaign, and repair information is often year- and VIN-specific. Use the exact vehicle identity instead of assuming every version of the model is the same.
Model-aware documentation
Issue categories to document for a BMW Z4.
These are investigation prompts, not statements that the model has each problem. Select only the categories that match the actual vehicle and repair orders.
Water intrusion, seals, noise, or vibration
Photograph the location and resulting damage, note weather conditions, and preserve any leak testing or body-repair findings.
Engine, power delivery, or stalling
Record the operating conditions, warning messages, speed, temperature, and whether the concern returned after repair.
Transmission, shifting, or drivability
Note hesitation, harsh engagement, slipping, vibration, or loss of response and the exact conditions in which it occurs.
Electrical power and recurring warnings
Save photographs of warning lights, no-start events, battery replacements, diagnostic codes, and modules tested or replaced.
Software, displays, cameras, and connectivity
Identify update or calibration numbers, failed features, reset attempts, and whether the same symptom returned after programming.
Vehicle safety and service records
BMW Z4: NHTSA records by model year
Find your model year, distinguish a safety recall from a service bulletin or owner report, and compare the records with your vehicle’s VIN, equipment, and repair history.
Indexed source review: September 24, 2026 · Model-year window: 2021–2026
Model year 2021
2021 BMW Z4
The 2021 Z4 index includes 5 distinct safety campaigns, covering fuel and propulsion, engine and cooling, airbags, belts, and seating, electrical systems and software. Owner-report entries are most numerous in equipment and other reported systems (1). 115 manufacturer communications are organized separately below so workshop instructions are not mistaken for confirmed owner failures. Start with any applicable safety instructions, then match the service documents and reported conditions to the actual repair orders.
Safety recalls
Safety recall
Fuel System, Gasoline: Storage: Tank Assembly
The campaign addresses fire risk involving the listed component. Its applicability is limited to the affected vehicles and equipment described by BMW of North America, LLC.
Reported condition: “The weld between the fuel tank halves may have been insufficiently welded, causing the weld to fail.”
Scope, remedy, and official notice
Applicability in the source: BMW of North America, LLC (BMW) is recalling certain 2020-2021 Z4 and 2020-2021 Toyota Supra vehicles.
Remedy and status excerpt: BMW will notify owners, and dealers will replace the fuel tank, free of charge. The recall began December 18, 2020.
A model-year match does not establish that this VIN is affected or still unrepaired. Keep the campaign number, dealer repair order, and completion date together.
NHTSA 20V700000 — official recall, affected vehicles, and remedy
Safety recall
Engine
The campaign addresses crash risk involving the listed component. Its applicability is limited to the affected vehicles and equipment described by BMW of North America, LLC.
Reported condition: “During engine start, the engine management software may cause loss of braking assist. Full mechanical braking (without assist) remains available.”
Scope, remedy, and official notice
Applicability in the source: BMW of North America, LLC (BMW) is recalling certain 2020 M340i, M340i xDrive, 540i, 540i xDrive, X3 M40i, 2020-2021 X4 M40i, 745Le xDrive, 2019-2021 Z4 M40i, and 2020-2021 Toyota Supra vehicles.
Remedy and status excerpt: Dealers will update the engine management software, free of charge.
A model-year match does not establish that this VIN is affected or still unrepaired. Keep the campaign number, dealer repair order, and completion date together.
NHTSA 21V598000 — official recall, affected vehicles, and remedy
Safety recall
Seat Belts
The campaign addresses crash risk, injury risk involving the listed component. Its applicability is limited to the affected vehicles and equipment described by BMW of North America, LLC.
Reported condition: “The passenger seat belt Automatic Locking Retractor (ALR) may deactivate early, before the webbing fully retracts. As such, these assemblies fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant …”
Scope, remedy, and official notice
Applicability in the source: BMW of North America, LLC (BMW) is recalling certain 2021 2 Series (230i, 230i xDrive, M240i, M240i xDrive), 330e, 330e Xdrive, 4 Series Coupe (430i, 430i xDrive, M440i xDrive) M4 Coupe, M4 Competition Coupe, BMW 4 Series Convertible (430i, M440i), BMW X1 sDrive28i, xDrive28i, 2 Series Gran Coupe (228i, 228i xDrive, M235i xDrive), M2 Competition Coupe, 330i, 330i xDrive, M340i, M340i xDrive, M3, M3 Competition, 530i, 530i xDrive, 540i, 540i xDrive, MINI Hardtop 2 Door (Cooper, CooperS, JCW), X2 sDrive28i, X2 xDrive28i, X2 M35i, Z4 sDrive30i, Z4 M40i, MINI Hardtop 2 Door (Cooper SE), MINI Convertible (Cooper, Cooper S, JCW), MINI Clubman (Cooper S, Cooper S All4, JCW), MINI Countryman (Cooper, Cooper All4, Cooper S, Cooper S All4, JCW All4), Rolls Royce Ghost, MINI Countryman (Cooper S E All4), Rolls Royce Phantom, Rolls Royce Cullinan, and Toyota Supra vehicles.
Remedy and status excerpt: Dealers will inspect the seat belt retractors (including the seat belts) and, if necessary, replace the retractors, free of charge.
A model-year match does not establish that this VIN is affected or still unrepaired. Keep the campaign number, dealer repair order, and completion date together.
NHTSA 21V554000 — official recall, affected vehicles, and remedy
Safety recall
Electrical System: Starter Assembly: Relay
The campaign addresses fire risk involving the listed component. Its applicability is limited to the affected vehicles and equipment described by BMW of North America, LLC.
Reported condition: “The engine starter relay may corrode, causing the relay to overheat and short circuit.”
Park an affected vehicle outside and away from structures as instructed by the manufacturer. Confirm current precautions and repair arrangements.
Scope, remedy, and official notice
Applicability in the source: BMW of North America, LLC (BMW) is recalling certain 2019-2021 BMW 330i, 2019-2022 BMW Z4, 2020-2022 BMW 530i, X3, X4, Toyota Supra, 2021-2022 BMW 430i, 430i Convertible, and 2022 BMW 230i vehicles.
Remedy and status excerpt: Owners are advised to park their vehicles outside and away from structures until the remedy is complete. Dealers will replace the engine starter, free of charge. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov November 14, 2025.
A model-year match does not establish that this VIN is affected or still unrepaired. Keep the campaign number, dealer repair order, and completion date together.
NHTSA 25V636000 — official recall, affected vehicles, and remedy
Safety recall
Electrical System: Starter Assembly
The campaign addresses fire risk, injury risk involving the listed component. Its applicability is limited to the affected vehicles and equipment described by BMW of North America, LLC.
Reported condition: “Please see the recall report for a complete list of all models. The engine starter may overheat and catch fire due to wear on an internal component.”
Scope, remedy, and official notice
Applicability in the source: BMW of North America, LLC (BMW) is recalling certain 2021-2023 Toyota Supra, 2022-2023 2 Series Coupe, 2021-2024 5 Series (xDrive), 2021-2022 Z4, 2022-2024 4 Series (Gran Coupe), 2021-2024 4 Series (Convertible and xDrive Convertible), 2021-2023 4 Series (Coupe), 2021-2024 3 Series, 2021-2023 X4, 2021-2024 X3 vehicles.
Remedy and status excerpt: Dealers will replace the engine starter, free of charge. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning March 24, 2026.
A model-year match does not establish that this VIN is affected or still unrepaired. Keep the campaign number, dealer repair order, and completion date together.
NHTSA 26V056000 — official recall, affected vehicles, and remedy
Owner-reported concerns
Consumer allegations · 1 distinct reports
Equipment and other reported systems
These submissions are grouped by their NHTSA component tags. They are allegations, not agency findings, and a report can carry more than one tag. For a case-specific comparison, preserve the exact customer concern, affected equipment, configuration, and final repair findings.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Manufacturer communications and service bulletins
Service information · 44 distinct communications
Electrical systems and software
The text includes references to software or module updates (5), charging or battery concerns (4), shifting or acceleration (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check warning messages, battery tests, software versions, module replacements, and recurrence against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10182917 — bulletin B610120, 2020-10-01
- NHTSA 10205070 — bulletin B650919, 2021-11-01
- NHTSA 10249027 — bulletin B611305, 2024-01-11
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 21 distinct communications
Equipment and other reported systems
The text includes references to charging or battery concerns (6), software or module updates (4), noise or vibration (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check the exact customer concern, affected equipment, configuration, and final repair findings against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10182618 — bulletin B610120, 2020-10-01
- NHTSA 10194298 — bulletin B360121, 2021-04-01
- NHTSA 10239615 — bulletin B840323, 2023-06-01
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 14 distinct communications
Visibility, cameras, and driver assistance
The text includes references to warnings or diagnostic codes (2), noise or vibration (2), software or module updates (2). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check weather, visibility, displayed warnings, software versions, and sensor calibration against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10184584 — bulletin B612315, 2020-11-01
- NHTSA 10225121 — bulletin B640422, 2022-09-01
- NHTSA 10250374 — bulletin B640422, 2024-02-16
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 8 distinct communications
Body and closures
The text includes references to noise or vibration (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check the affected panel or closure, water entry, noise, photographs, and repair attempts against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10181225 — bulletin B511219, 2020-09-01
- NHTSA 10230725 — bulletin B240222, 2022-12-01
- NHTSA 11016441 — bulletin B540225, 2025-03-27
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
NHTSA manufacturer-communication source dataset · NHTSA manufacturer-communication source dataset
Service information · 8 distinct communications
Steering
The text includes references to noise or vibration (2), warnings or diagnostic codes (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check steering effort, vehicle speed, direction of travel, and diagnostic findings against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10186895 — bulletin B662419, 2020-12-01
- NHTSA 10206690 — bulletin B662419, 2021-12-01
- NHTSA 10249018 — bulletin B360121, 2024-01-08
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 6 distinct communications
Engine and cooling
The text includes references to software or module updates (1), shifting or acceleration (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check engine warnings, temperature, operating conditions, fluid levels, and repair findings against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10200228 — bulletin B110120, 2021-06-01
- NHTSA 10215750 — bulletin SIB090121, 2022-05-01
- NHTSA 11032731 — bulletin B010324, 2026-05-06
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
NHTSA manufacturer-communication source dataset · NHTSA manufacturer-communication source dataset
Service information · 4 distinct communications
Fuel and propulsion
The text includes references to leaks or water entry (2). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check fuel or charging conditions, power loss, warning messages, and confirmed diagnosis against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10182606 — bulletin B160320, 2020-10-01
- NHTSA 10239602 — bulletin B160123, 2023-06-01
- NHTSA 10249015 — bulletin B160123, 2024-01-05
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 4 distinct communications
Airbags, belts, and seating
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check the seating position, restraint equipment, warning messages, and installed parts against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10182616 — bulletin B520720, 2020-10-01
- NHTSA 10194302 — bulletin B520721, 2021-04-01
- NHTSA 10198899 — bulletin B110321, 2021-05-01
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 3 distinct communications
Suspension, wheels, and tires
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check speed, road conditions, tire condition, alignment measurements, and replaced parts against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10181218 — bulletin B310120, 2020-09-01
- NHTSA 10182607 — bulletin B310120, 2020-10-01
- NHTSA 10182906 — bulletin B310120, 2020-10-01
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 2 distinct communications
Lighting and signals
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check the lamp or signal involved, conditions of use, warning indicators, and repair results against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 1 distinct communications
Brakes and stability control
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check pedal response, warning lights, road conditions, and the technician’s findings against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Configuration-specific safety information
NHTSA safety-data entry
C · RWD
The indexed entry does not supply the principal star-rating values shown in this review. An equipment listing is not a crash-test rating.
These results belong to the stated model year and configuration. Do not transfer them to a different body style, drivetrain, or trim. A rating does not resolve whether a particular vehicle has an open recall or recurring repair condition.
Model year 2022
2022 BMW Z4
The 2022 Z4 index includes 3 distinct safety campaigns, covering electrical systems and software, visibility, cameras, and driver assistance. Owner-report entries are most numerous in visibility, cameras, and driver assistance (1) and electrical systems and software (1). 45 manufacturer communications are organized separately below so workshop instructions are not mistaken for confirmed owner failures. Start with any applicable safety instructions, then match the service documents and reported conditions to the actual repair orders.
Safety recalls
Safety recall
Electrical System: Software / Visibility: Power Window Devices And Controls
The campaign addresses injury risk involving the listed component. Its applicability is limited to the affected vehicles and equipment described by BMW of North America, LLC.
Reported condition: “When the digital key is removed from the vehicle, the Electronic Control Unit (ECU) software may still allow the power windows and sunroof to be closed. As such, these vehicles fail to comply with the …”
Scope, remedy, and official notice
Applicability in the source: BMW of North Americal, LLC (BMW) is recalling certain 2023 8 Series Coupe (840i, 840i xDrive, M850i xDrive, M8), 8 Series Convertible (840i, 840i xDrive, M850i xDrive, M8), 8 Series Gran Coupe (840i, 840i xDrive, M850i xDrive, M8, Alpine B8 xDrive), 2 Series Coupe (230i, 230i xDrive, M240i xDrive, M2), and 2022-2023 Z4 sDrive30i, Z4 M40i vehicles.
Remedy and status excerpt: Dealers will update the software for the Electronic Control Unit (ECU), free of charge. In addition, the digital key function via cellular service and Wi-Fi capability will be deactivated until the vehicle is updated with new software.
A model-year match does not establish that this VIN is affected or still unrepaired. Keep the campaign number, dealer repair order, and completion date together.
NHTSA 23V099000 — official recall, affected vehicles, and remedy
Safety recall
Electrical System: Starter Assembly: Relay
The campaign addresses fire risk involving the listed component. Its applicability is limited to the affected vehicles and equipment described by BMW of North America, LLC.
Reported condition: “The engine starter relay may corrode, causing the relay to overheat and short circuit.”
Park an affected vehicle outside and away from structures as instructed by the manufacturer. Confirm current precautions and repair arrangements.
Scope, remedy, and official notice
Applicability in the source: BMW of North America, LLC (BMW) is recalling certain 2019-2021 BMW 330i, 2019-2022 BMW Z4, 2020-2022 BMW 530i, X3, X4, Toyota Supra, 2021-2022 BMW 430i, 430i Convertible, and 2022 BMW 230i vehicles.
Remedy and status excerpt: Owners are advised to park their vehicles outside and away from structures until the remedy is complete. Dealers will replace the engine starter, free of charge. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov November 14, 2025.
A model-year match does not establish that this VIN is affected or still unrepaired. Keep the campaign number, dealer repair order, and completion date together.
NHTSA 25V636000 — official recall, affected vehicles, and remedy
Safety recall
Electrical System: Starter Assembly
The campaign addresses fire risk, injury risk involving the listed component. Its applicability is limited to the affected vehicles and equipment described by BMW of North America, LLC.
Reported condition: “Please see the recall report for a complete list of all models. The engine starter may overheat and catch fire due to wear on an internal component.”
Scope, remedy, and official notice
Applicability in the source: BMW of North America, LLC (BMW) is recalling certain 2021-2023 Toyota Supra, 2022-2023 2 Series Coupe, 2021-2024 5 Series (xDrive), 2021-2022 Z4, 2022-2024 4 Series (Gran Coupe), 2021-2024 4 Series (Convertible and xDrive Convertible), 2021-2023 4 Series (Coupe), 2021-2024 3 Series, 2021-2023 X4, 2021-2024 X3 vehicles.
Remedy and status excerpt: Dealers will replace the engine starter, free of charge. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning March 24, 2026.
A model-year match does not establish that this VIN is affected or still unrepaired. Keep the campaign number, dealer repair order, and completion date together.
NHTSA 26V056000 — official recall, affected vehicles, and remedy
Owner-reported concerns
Consumer allegations · 1 distinct reports
Visibility, cameras, and driver assistance
These submissions are grouped by their NHTSA component tags. They are allegations, not agency findings, and a report can carry more than one tag. For a case-specific comparison, preserve weather, visibility, displayed warnings, software versions, and sensor calibration.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Consumer allegations · 1 distinct reports
Electrical systems and software
These submissions are grouped by their NHTSA component tags. They are allegations, not agency findings, and a report can carry more than one tag. For a case-specific comparison, preserve warning messages, battery tests, software versions, module replacements, and recurrence.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Manufacturer communications and service bulletins
Service information · 18 distinct communications
Electrical systems and software
The text includes references to software or module updates (4), charging or battery concerns (3). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check warning messages, battery tests, software versions, module replacements, and recurrence against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10212795 — bulletin B610722, 2022-04-01
- NHTSA 10236395 — bulletin SIB650423, 2023-02-10
- NHTSA 10249027 — bulletin B611305, 2024-01-11
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 9 distinct communications
Visibility, cameras, and driver assistance
The text includes references to warnings or diagnostic codes (2), noise or vibration (2). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check weather, visibility, displayed warnings, software versions, and sensor calibration against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10211809 — bulletin B661519, 2022-03-01
- NHTSA 10236402 — bulletin SIB610223, 2023-02-16
- NHTSA 10250374 — bulletin B640422, 2024-02-16
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 5 distinct communications
Equipment and other reported systems
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check the exact customer concern, affected equipment, configuration, and final repair findings against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10233163 — bulletin B610223, 2023-02-01
- NHTSA 10233169 — bulletin B652021, 2023-02-01
- NHTSA 10239615 — bulletin B840323, 2023-06-01
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 4 distinct communications
Body and closures
The text includes references to noise or vibration (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check the affected panel or closure, water entry, noise, photographs, and repair attempts against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10230725 — bulletin B240222, 2022-12-01
- NHTSA 11013048 — bulletin B540324, 2025-01-13
- NHTSA 11016441 — bulletin B540225, 2025-03-27
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
NHTSA manufacturer-communication source dataset · NHTSA manufacturer-communication source dataset
Service information · 3 distinct communications
Engine and cooling
The text includes references to shifting or acceleration (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check engine warnings, temperature, operating conditions, fluid levels, and repair findings against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10214989 — bulletin SIB640222, 2022-05-01
- NHTSA 10236218 — bulletin SIB120123, 2023-04-01
- NHTSA 11032731 — bulletin B010324, 2026-05-06
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
NHTSA manufacturer-communication source dataset · NHTSA manufacturer-communication source dataset
Service information · 2 distinct communications
Steering
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check steering effort, vehicle speed, direction of travel, and diagnostic findings against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 2 distinct communications
Fuel and propulsion
The text includes references to leaks or water entry (2). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check fuel or charging conditions, power loss, warning messages, and confirmed diagnosis against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 2 distinct communications
Lighting and signals
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check the lamp or signal involved, conditions of use, warning indicators, and repair results against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Configuration-specific safety information
NHTSA safety-data entry
C · RWD
The indexed entry does not supply the principal star-rating values shown in this review. An equipment listing is not a crash-test rating.
These results belong to the stated model year and configuration. Do not transfer them to a different body style, drivetrain, or trim. A rating does not resolve whether a particular vehicle has an open recall or recurring repair condition.
Model year 2023
2023 BMW Z4
The 2023 Z4 index includes 2 distinct safety campaigns, covering electrical systems and software, visibility, cameras, and driver assistance, transmission and driveline. 36 manufacturer communications are organized separately below so workshop instructions are not mistaken for confirmed owner failures. Start with any applicable safety instructions, then match the service documents and reported conditions to the actual repair orders.
Safety recalls
Safety recall
Electrical System: Software / Visibility: Power Window Devices And Controls
The campaign addresses injury risk involving the listed component. Its applicability is limited to the affected vehicles and equipment described by BMW of North America, LLC.
Reported condition: “When the digital key is removed from the vehicle, the Electronic Control Unit (ECU) software may still allow the power windows and sunroof to be closed. As such, these vehicles fail to comply with the …”
Scope, remedy, and official notice
Applicability in the source: BMW of North Americal, LLC (BMW) is recalling certain 2023 8 Series Coupe (840i, 840i xDrive, M850i xDrive, M8), 8 Series Convertible (840i, 840i xDrive, M850i xDrive, M8), 8 Series Gran Coupe (840i, 840i xDrive, M850i xDrive, M8, Alpine B8 xDrive), 2 Series Coupe (230i, 230i xDrive, M240i xDrive, M2), and 2022-2023 Z4 sDrive30i, Z4 M40i vehicles.
Remedy and status excerpt: Dealers will update the software for the Electronic Control Unit (ECU), free of charge. In addition, the digital key function via cellular service and Wi-Fi capability will be deactivated until the vehicle is updated with new software.
A model-year match does not establish that this VIN is affected or still unrepaired. Keep the campaign number, dealer repair order, and completion date together.
NHTSA 23V099000 — official recall, affected vehicles, and remedy
Safety recall
Power Train: Automatic Transmission: Control Module (tcm/Pcm/Tecm)
The campaign addresses crash risk involving the listed component. Its applicability is limited to the affected vehicles and equipment described by BMW of North America, LLC.
Reported condition: “The weld seam of the integrated transmission control unit's cover may not have been manufactured properly, which could allow automatic transmission oil to leak into the transmission control unit.”
Scope, remedy, and official notice
Applicability in the source: BMW of North America, LLC (BMW) is recalling certain 2023 Toyota GR Supra, 3 Series Sedan (330i xDrive, M340i xDrive, M3), 5 Series Sedan (530i, 530i xDrive, M5), 4 Series Gran Coupe (430i, 430i xDrive), 4 Series Coupe (430i, 430i xDrive, M440i xDrive), 4 Series Convertible (430i, 430i xDrive, M440i xDrive), 8 Series Coupe (840i, M850i xDrive, M8), 8 Series Convertible (840i, M850i xDrive, M8), 8 Series Gran Coupe (850i xDrive, M8), X3 SAV (X3 xDrive30i, X3M), X4 SAV (X4 xDrive30i), X5 SAV (X5 xDrive40i, X5 M50i, X5M), X6 SAV (X6 xDrive40i, X6 M50i, X6M), and Z4 sDrive30i, Z4 M40i vehicles.
Remedy and status excerpt: Dealers will replace the transmission mechatronics module and the automatic transmission fluid, as necessary, free of charge.
A model-year match does not establish that this VIN is affected or still unrepaired. Keep the campaign number, dealer repair order, and completion date together.
NHTSA 23V821000 — official recall, affected vehicles, and remedy
Manufacturer communications and service bulletins
Service information · 11 distinct communications
Electrical systems and software
The text includes references to charging or battery concerns (4), software or module updates (3). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check warning messages, battery tests, software versions, module replacements, and recurrence against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10236398 — bulletin SIB652021, 2023-02-27
- NHTSA 10239611 — bulletin B630821, 2023-06-01
- NHTSA 10253731 — bulletin B810424, 2024-04-24
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 6 distinct communications
Steering
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check steering effort, vehicle speed, direction of travel, and diagnostic findings against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10235180 — bulletin B320123, 2023-03-01
- NHTSA 11009555 — bulletin B310223, 2024-10-31
- NHTSA 11021817 — bulletin B320123, 2025-08-08
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
NHTSA manufacturer-communication source dataset · NHTSA manufacturer-communication source dataset
Service information · 4 distinct communications
Visibility, cameras, and driver assistance
The text includes references to noise or vibration (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check weather, visibility, displayed warnings, software versions, and sensor calibration against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10236402 — bulletin SIB610223, 2023-02-16
- NHTSA 10236236 — bulletin SIB660823, 2023-04-01
- NHTSA 10250374 — bulletin B640422, 2024-02-16
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 4 distinct communications
Equipment and other reported systems
The text includes references to noise or vibration (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check the exact customer concern, affected equipment, configuration, and final repair findings against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10239601 — bulletin B120323, 2023-06-01
- NHTSA 11002864 — bulletin B650121, 2024-06-12
- NHTSA 11014665 — bulletin B640125, 2025-02-28
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
NHTSA manufacturer-communication source dataset · NHTSA manufacturer-communication source dataset
Service information · 3 distinct communications
Engine and cooling
The text includes references to shifting or acceleration (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check engine warnings, temperature, operating conditions, fluid levels, and repair findings against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10236218 — bulletin SIB120123, 2023-04-01
- NHTSA 11005449 — bulletin B511219, 2024-07-29
- NHTSA 11032731 — bulletin B010324, 2026-05-06
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
NHTSA manufacturer-communication source dataset · NHTSA manufacturer-communication source dataset
Service information · 3 distinct communications
Body and closures
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check the affected panel or closure, water entry, noise, photographs, and repair attempts against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
- NHTSA 10242693 — bulletin B511323, 2023-08-01
- NHTSA 11013048 — bulletin B540324, 2025-01-13
- NHTSA 11016441 — bulletin B540225, 2025-03-27
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
NHTSA manufacturer-communication source dataset · NHTSA manufacturer-communication source dataset
Service information · 2 distinct communications
Fuel and propulsion
The text includes references to leaks or water entry (2). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check fuel or charging conditions, power loss, warning messages, and confirmed diagnosis against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 1 distinct communications
Lighting and signals
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check the lamp or signal involved, conditions of use, warning indicators, and repair results against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 1 distinct communications
Transmission and driveline
The text includes references to inspection or repair procedures (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check gear selection, speed, load, vibration, and the repair procedure performed against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Service information · 1 distinct communications
Suspension, wheels, and tires
The text includes references to noise or vibration (1). These are text themes, not verified causes or separate failure counts.
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check speed, road conditions, tire condition, alignment measurements, and replaced parts against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Configuration-specific safety information
NHTSA safety-data entry
C · RWD
The indexed entry does not supply the principal star-rating values shown in this review. An equipment listing is not a crash-test rating.
These results belong to the stated model year and configuration. Do not transfer them to a different body style, drivetrain, or trim. A rating does not resolve whether a particular vehicle has an open recall or recurring repair condition.
Model year 2024
2024 BMW Z4
No safety-recall campaign was supplied for this model year in the indexed search. That is not a current VIN clearance. The available records below concern configuration-specific safety information. Start with any applicable safety instructions, then match the service documents and reported conditions to the actual repair orders.
Configuration-specific safety information
NHTSA safety-data entry
C · RWD
The indexed entry does not supply the principal star-rating values shown in this review. An equipment listing is not a crash-test rating.
These results belong to the stated model year and configuration. Do not transfer them to a different body style, drivetrain, or trim. A rating does not resolve whether a particular vehicle has an open recall or recurring repair condition.
Model year 2025
2025 BMW Z4
No safety-recall campaign was supplied for this model year in the indexed search. That is not a current VIN clearance. 1 manufacturer communication is organized separately below so workshop instructions are not mistaken for confirmed owner failures. Start with any applicable safety instructions, then match the service documents and reported conditions to the actual repair orders.
Manufacturer communications and service bulletins
Service information · 1 distinct communications
Equipment and other reported systems
This group collects manufacturer instructions under the listed system. A bulletin may concern diagnosis, routine service, parts, software, or administration; its existence does not establish that every vehicle has a defect. Check the exact customer concern, affected equipment, configuration, and final repair findings against the document’s VIN, trim, and equipment limits.
Source examples and record coverage
Examples are selected from the beginning, middle, and end of this group’s date-ordered records; they are not a frequency or severity ranking.
Model year 2026
2026 BMW Z4
No safety-recall campaign was supplied for this model year in the indexed search. That is not a current VIN clearance. The available records below concern configuration-specific safety information. Start with any applicable safety instructions, then match the service documents and reported conditions to the actual repair orders.
Configuration-specific safety information
NHTSA safety-data entry
C · RWD
The indexed entry does not supply the principal star-rating values shown in this review. An equipment listing is not a crash-test rating.
These results belong to the stated model year and configuration. Do not transfer them to a different body style, drivetrain, or trim. A rating does not resolve whether a particular vehicle has an open recall or recurring repair condition.
Repair chronology
Turn every Z4 visit into a usable timeline.
Place the final repair orders in date and mileage order. Compare the customer complaint, technician findings, correction, and post-repair result instead of relying only on a dealer summary or online discussion.
Keep visits marked “could not duplicate,” “operating as designed,” or “no fault found.” Those entries may still show that the concern was reported and that an opportunity to inspect was provided.
1Date and mileage
2Complaint in the driver’s words
3Diagnosis and testing performed
4Parts, software, or correction
5Days unavailable and post-repair result
California legal framework
The statute applies to the evidence—not the badge.
California Civil Code section 1793.2 addresses warranty repair obligations and, in specified circumstances, replacement or restitution after a reasonable number of repair attempts. Section 1793.22 defines the Tanner presumption and “nonconformity.” Those provisions require a fact-specific analysis.
Applicable warranty
Identify the written coverage in effect when the concern was presented.
Repair opportunity
Show when and how the manufacturer or authorized facility received the vehicle.
Substantial impairment
Document the effect on use, value, or safety rather than relying on labels.
Remedy analysis
Compare restitution, replacement, negotiated resolutions, offsets, and supporting damages.
Warranty and escalation record
Separate the BMW Z4 warranty from other contracts.
A manufacturer warranty, certified coverage, dealer promise, and separately purchased service contract may have different obligors and terms. Preserve each document instead of calling all coverage an “extended warranty.”
Save every BMW dealer message, repair authorization, parts-delay explanation, manufacturer case number, and written response. A phone call may matter, but a dated email, text, or letter usually makes the sequence easier to prove.
Primary and practical sources
Verify the law, vehicle, and warranty separately.
More BMW guides
Browse other models.
Clear answers
BMW Z4 lemon law questions
Can a BMW Z4 qualify under California lemon law?
It may, but the model name alone does not decide eligibility. A review should match the exact vehicle to an applicable written warranty and examine the repair opportunities, recurring nonconformity, mileage, downtime, and effect on use, value, or safety.
How many Z4 repair attempts are required?
There is no universal count that decides every case. California’s Tanner presumption describes specific circumstances, but claims can require a broader analysis of whether the manufacturer had a reasonable opportunity to repair the warranty problem.
Does a recall or service campaign prove that my Z4 is a lemon?
No. Recall, campaign, complaint, or bulletin information may provide context, but it does not prove the condition exists in this vehicle or establish a lemon law claim. Use VIN-specific information and the actual repair record.
What BMW Z4 records should I save?
Keep the purchase or lease agreement, warranty booklet, every final repair order, current registration and payoff information, photographs or videos, towing and rental records, and dealer or manufacturer messages and case numbers.
Can a used or leased Z4 qualify?
Possibly. The answer depends on the transaction, vehicle history, warranty that applied, timing of the repair visits, and other facts. A used or leased vehicle should be evaluated from its own documents.
What remedies may be available for a qualifying BMW Z4?
Depending on the facts and current law, possible outcomes can include restitution or repurchase, replacement, a negotiated cash resolution, warranty relief, incidental damages, or other remedies. No particular outcome is guaranteed.
Free case review
Does your BMW Z4 keep going back for repair?
Send the warranty and repair history to Echelon Law for a free, confidential California lemon law review.