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2021 BMW 4 Series VIN Check, Recalls & Reliability

The 2021 BMW 4-Series has mixed reliability. There are 40 recalls and 64 owner complaints on file for the 2021 BMW 4-Series. Severity signals include 3 crash-related complaints and 3 fire-related complaints. The most commonly reported problem areas are: Electrical System (16), Unknown Or Other (7), Power Train (4).

4-Series reliability snapshot

57/100
Latest model-year reliability score
3.0/5
RepairPal rating (overall)

Data sourced from Auto Reliability Index, aggregating NHTSA recalls, owner complaints, and RepairPal repair-cost records.

Used-car research

Research the BMW 4-Series before checking the VIN

Compare model years, recurring problems, safety campaigns and market value first. Then use the VIN to verify the history of the individual car.

Most-reported 2021 BMW 4-Series issues

Owner-reported problem categories from NHTSA complaint filings. Counts reflect complaints per category for the most-recent model year on file.

  • Electrical System16
  • Unknown Or Other7
  • Power Train4
  • Air Bags4
  • Engine3
  • Service Brakes3

Pre-purchase inspection checklist for the 2021 BMW 4-Series

Hands-on checks distilled from real NHTSA complaint patterns and recall histories. Bring this list to a test drive or mechanic inspection.

  • Inspect motor mounts for wear or failure
  • Test brakes for noise or reduced effectiveness
  • Check for engine starter relay recall completion
  • Examine sunroof for signs of stress or damage
  • Verify seat belt retractor and arm function
  • Test electrical system for starting issues
  • Inspect tires for uneven wear or alignment issues

2021 4-Series recalls (20)

Every NHTSA safety recall logged against the 2021 4-Series. A VIN check confirms whether any recall remains unrepaired on a specific vehicle.

  1. ELECTRICAL SYSTEMNHTSA 26V056000Jan 30, 2026

    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. 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.

    Consequence: Fire increases the risk of injury.

    Remedy

    Dealers will replace the engine starter, free of charge. Owner notification letters are expected to be mailed March 24, 2026. Owners may contact BMW customer service at 1-800-525-7417 or Toyota's customer service at 1-800-331-4331. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning March 24, 2026.

  2. ELECTRICAL SYSTEMNHTSA 25V636000Sep 23, 2025
    Park outside until repaired

    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. The engine starter relay may corrode, causing the relay to overheat and short circuit.

    Consequence: A short circuit in the starter relay may increase the risk of a fire.

    Remedy

    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. Owner notification letters were mailed February 6, 2026. Owners may contact BMW customer service at 1-800-525-7417. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 14, 2025.

  3. SEAT BELTS, ELECTRICAL SYSTEMNHTSA 23V584000Aug 16, 2023

    BMW of North America, LLC (BMW) is recalling certain 2019-2022 330i, 330i xDrive, M340i, 2022 430i Coupe, 2021-2022 430i, M440i Convertible, and 2020-2022 228i xDrive Gran Coupe vehicles. The receiver audio module control unit software may fail to properly generate audible seat belt warnings to the driver to fasten their seat belt. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

    Consequence: An audible chime that does not properly alert the driver to fasten their seat belt increases the risk of injury in a crash.

    Remedy

    Dealers will update the receiver audio module software, free of charge. Owner notification letters were mailed October 12, 2023. Owners may contact BMW customer service at 1-800-525-7417.

  4. SEATSNHTSA 23V211000Mar 29, 2023

    BMW of North America, LLC (BMW) is recalling certain 2019-2021 330i, 330i xDrive, M340i xDrive, 2020-2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, 2021 X3 xDrive30e, X4 xDrive30i, and X4M vehicles. The seat frame may not have been welded properly to the seat rails.

    Consequence: An improperly welded seat frame may not properly restrain the occupant during a crash, increasing the risk of injury.

    Remedy

    Dealers will replace the seat frame and back rest, free of charge. Owner notification letters were mailed May 22, 2023. Owners may contact BMW customer service at 1-800-525-7417.

  5. SEAT BELTSNHTSA 21V554000Jul 21, 2021

    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. 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 Crash Protection."

    Consequence: During a crash, a seat belt retractor that does not function as intended increases the risk of injury.

    Remedy

    Dealers will inspect the seat belt retractors (including the seat belts) and, if necessary, replace the retractors, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact BMW customer service at 1-800-525-7417; 1-866-825-1525 (MINI); 1-877-877-3735 (Rolls Royce); and 1-888-270-9371 (Toyota).

  6. SEAT BELTSNHTSA 21V298000Apr 28, 2021

    BMW of North America, LLC (BMW) is recalling certain 2021 330i, 330i xDrive, M340i, M3, and 330e xDrive vehicles. The bolt securing the seat belt assembly to the frame was not tightened to specification.

    Consequence: An improperly installed seat belt assembly may not restrain an occupant as expected, increasing the risk of injury.

    Remedy

    BMW will notify owners, and dealers will inspect the front seat belt buckle assembly connection and, if necessary, replace it, free of charge. Owner notification letters were mailed on June 25, 2021. Owners may contact BMW customer service at 1-800-525-7417.

  7. BACK OVER PREVENTIONNHTSA 21V096000Feb 19, 2021

    BMW of North America, LLC (BMW) is recalling certain 2019-2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, X4 xDrive30i, X4 M40i, M550i, X4M, X5 sDrive40i, X5 xDrive40i, X5 xDrive50i, X5M, X5 M50i, X7 xDrive40i, X7 xDrive50i, X7 M50i, Alpina XB7, 330i, 330i xDrive, M340i, M340i xDrive, and 8 Series Coupe, Convertible and Grand Coupe, 840i, 840i xDrive, M850i xDrive, M8, 2020-2021 530e, 530e xDrive, 330e, 330e xDrive, 745Le, 745Le xDrive, X5 xDrive45e, X3 xDrive30e, X6 sDrive40i, X6 xDrive40i, X6 xDrive50i, X6 M50i, X6M, 530i, 530i xDrive, 540i, 540i xDrive, M550i xDrive, M5, 740i, 740Li, 740Li xDrive, M760i Drive, M760Li xDrive, 750Li xDrive Alpina, Alpina B7 xDrive, and 2021 4 Series Coupe 430i, 430i xDrive, M440i xDrive vehicles. When shifting into Reverse, a small portion of the rearview image may be obscured, or the screen may not illuminate. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."

    Consequence: If the driver relies on only the rearview camera image, the missing or reduced rearview image view can increase the risk of a crash or injury.

    Remedy

    BMW will notify owners, and dealers will inspect the rearview camera software and update it if necessary, free of charge. The recall began April 16, 2021. Owners may contact BMW customer service at 1-800-525-7417.

  8. ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLINGNHTSA 24V576000Aug 1, 2024

    BMW of North America, LLC is recalling certain 2019-2020 X5, X7, 2020 3 Series Sedan, X6, 2020-2021 7 Series Sedan, 2020 8 Series Convertible, 8 Series Coupe, and 2020 8 Series Gran Coupe vehicles. Please see the recall report for the complete list of models. In the event the starter motor fails, repeated attempts to start the vehicle can cause the starter motor to overheat from an electrical overload.

    Consequence: A starter motor that overheats can ignite nearby combustible material in the engine compartment, increasing the risk of a fire.

    Remedy

    Dealers will update the vehicle software, free of charge. Owner notification letters were mailed September 27, 2024. Owners may contact BMW customer service at 1-800-525-7417.

  9. ELECTRICAL SYSTEMNHTSA 20V601000Sep 30, 2020

    BMW of North America, LLC (BMW) is recalling certain 2020-2021 530e, 530e xDrive, 530e iPerformance and X3 xDrive30e and MINI Cooper Countryman All4 SE, 2020 BMW i8, and 2021 330e, 330e xDrive, 745Le xDrive and X5 xDrive45e vehicles. Debris may have entered one or more of the hybrid battery cells during their production.

    Consequence: The debris could result in a short-circuit, increasing the risk of fire or injury.

    Remedy

    BMW will inspect and, if necessary, replace the battery module free of charge. The remedy is currently being developed. Until the remedy is completed, drivers are instructed to not charge their vehicles. Drivers are instructed to not drive in manual mode, sport mode, and to not use the shift paddles. Owners were notified of the safety risk October 23, 2020. The recall began November 24, 2020. Owners may contact BMW customer service at 1-800-525-7417.

  10. ELECTRICAL SYSTEMNHTSA 20V490000Aug 18, 2020

    BMW of North America, LLC (BMW) is recalling certain 2021 330e and X5 xDrive45e, 2020-2021 X3 xDrive30e, and 2020 MINI Countryman SE ALL4 vehicles. Loose welding beads may form a conductive path between the hybrid battery cells which could lead to a short-circuit.

    Consequence: A short-circuited hybrid battery may increase the risk of a fire.

    Remedy

    BMW will notify owners, and dealers will inspect and, if necessary, replace the battery modules, free of charge. BMW issued owners an interim notification on October 16, 2020. Although potentially affected BMW owners received interim owner notification letters, all potentially affected BMW owner vehicles have been remedied; therefore, BMW Final owner notification letters will not be necessary. Owners may contact BMW customer service at 1-800-525-7417.

  11. AIR BAGSNHTSA 21V176000Mar 15, 2021

    BMW of North America, LLC (BMW) is recalling certain 2021 430i and M440i 4 Series Convertible vehicles. In certain side-impact crashes, the head-thorax air bag may not deploy as intended.

    Consequence: An air bag that deploys incorrectly can increase the risk of injury in a crash.

    Remedy

    Dealers will update the software, at no charge. All affected vehicles are still in dealer inventory, and therefore no owner letters will be mailed. The recall began March 9, 2021. Owners may contact BMW customer service at 1-800-525-7417.

  12. STRUCTURENHTSA 21V342000May 12, 2021

    BMW of North America, LLC (BMW) is recalling certain 2021 BMW 230i and M240i vehicles. Supports within the roof liner may be insecurely attached.

    Consequence: The support may separate from the roof liner and fall into the passenger compartment, increasing the risk of injury during a crash necessitating the deployment of the head air bag.

    Remedy

    Dealers will inspect and repair or replace the roof liner as necessary, free of charge. Owner notification letters will not be sent. The one owner was notified on June 15, 2021 by telephone and the vehicle has been repaired. Owners may contact BMW customer service at 1-800-525-7417.

  13. VISIBILITYNHTSA 21V091000Feb 18, 2021

    BMW of North America, LLC (BMW) is recalling certain 2020-2021 228i, 228i xDrive, and M235i xDrive vehicles. If the driver initiates an automatic closure of the sunroof, and the vehicle key status is changed to "off" or "lock," the sunroof may continue to close. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 118, "Power-operated Window Systems."

    Consequence: If the sunroof continues to close after the vehicle is shut off, it may increase the risk of injury.

    Remedy

    BMW will notify owners, and dealers will update the sunroof electronic coding software, free of charge. The recall began April 16, 2021. Owners may contact BMW customer service at 1-800-525-7417.

  14. POWER TRAINNHTSA 21V046000Feb 3, 2021

    BMW of North America, LLC (BMW) is recalling certain 2020-2021 530i xDrive, 540i xDrive and 2021 740Li xDrive vehicles. The output shafts (left/right) which transfer power from the driveshaft to the rear wheels may break due to a heat treatment error during supplier production.

    Consequence: A broken output shaft can lead to a loss of drive power or a rollaway condition in a parked vehicle (if the parking brake is not engaged), increasing the risk of a crash.

    Remedy

    BMW will notify owners, and dealers will replace the output shaft(s), free of charge. The recall began March 24, 2021. Owners may contact BMW customer service at 1-800-525-7417.

  15. ELECTRICAL SYSTEMNHTSA 20V761000Dec 9, 2020

    BMW of North America, LLC (BMW) is recalling certain 2021 M340i xDrive, M440i xDrive Coupe, 530i, 530i xDrive, 540i, 540i xDrive, 740Li, 740Li xDrive, 840i Gran Coupe, 840i xDrive Gran Coupe, X5 sDrive40i, X5 xDrive40i, X6 sDrive40i, X6 xDrive40i, and X7 xDrive40i vehicles. The connection between the 48-Volt battery and the starter-generator may not have been assembled properly, which can cause increased electrical resistance at the connections.

    Consequence: Increased electrical resistance can increase the risk of a fire.

    Remedy

    BMW will notify owners, and dealers will inspect the connection between the 48-Volt battery and the starter-generator assembly, replacing it if necessary, free of charge. The recall is expected to begin April 12, 2021. Owners may contact BMW customer service at 1-800-525-7417.

  16. BACK OVER PREVENTIONNHTSA 20V598000Sep 30, 2020

    BMW of North America, LLC (BMW) is recalling certain 2020-2021 X3 sDrive 30i, X3 xDrive 30i, X3M 40i, X3 xDrive 30e, X4 xDrive 30i, X4M 40i, 530i, 540i, 540i xDrive, M550i xDrive, M5, 550e, 550e xDrive, and 550e iPerformance vehicles. A small portion of the rearview image may be slightly obscured. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

    Consequence: If the driver relies on only the rearview camera image, the reduced rearview image view can increase the risk of a crash or injury.

    Remedy

    BMW will notify owners, and dealers will inspect and, if necessary, program the rearview camera with updated software. The recall began November 18, 2020. Owners may contact BMW customer service at 1-800-525-7417.

  17. ELECTRICAL SYSTEMNHTSA 25V644000Sep 25, 2025

    BMW of North America, LLC (BMW) is recalling certain 2020 340I, X6, 2020-2025 840I, 2020-2022 740LI, 2019-2020 X7, and X5 vehicles. After repeated attempts, the starter motor may overheat from an electrical overload.

    Consequence: An overheated starter motor can ignite nearby combustible material in the engine compartment, increasing the risk of a fire.

    Remedy

    Dealers will replace the engine starter, free of charge. This recall includes vehicles repaired under recall 24V576 and those owners will need to have their vehicle repaired again. Owner notification letters were mailed February 9, 2026. Owners may contact BMW customer service at 1-800-525-7417. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov November 17, 2025.

  18. ENGINENHTSA 21V598000Aug 2, 2021

    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. During engine start, the engine management software may cause loss of braking assist. Full mechanical braking (without assist) remains available.

    Consequence: Loss of braking assist can increase the risk of a crash.

    Remedy

    Dealers will update the engine management software, free of charge. Owner notification letters were mailed on September 17, 2021. Owners may contact BMW customer service at 1-800-525-7417.

  19. SERVICE BRAKES, HYDRAULICNHTSA 21V062000Feb 10, 2021

    BMW of North America, LLC (BMW) is recalling certain 2020-2021 8 Series Coupe, Grand Coupe and convertible 840i, 840i xDrive, M850i xDrive, M8 and 740 Li, 740 Li xDrive, 750 Li xDrive, M760 Li xDrive, X6 sDrive40i, X6 xDrive40i, X6 xdrive50i, X6 M50i, X6M, and 2019-2021 X5 sDrive40i, X5 xDrive40i, X5 xDrive50i, X5 M50i, X5M, X7 xDrive40i, X7 xDrive50i, X7 M50i, and 2021 M3, M3 Competition, M4 Coupe, M4 Competition Coupe, X5 xDrive45e, 745 Le xDrive. The rotor and shaft within the integrated brake system may not have been welded properly and could separate during a hard braking event, possibly resulting in a loss of the Antilock Brake System (ABS) and braking assistance.

    Consequence: A loss of ABS and a reduction in braking assistance can increase the risk of a crash.

    Remedy

    BMW will notify owners, and dealers will replace the integrated brake system, free of charge. Owner notification letters were mailed on May 25, 2021. Owners may contact BMW customer service at 1-800-525-7417.

  20. CHILD SEATNHTSA 20V379000Jun 30, 2020

    BMW of North America, LLC (BMW) is recalling certain 2020-2021 740Li, 740 Li xDrive, 750Li xDrive, M760Li xDrive, and Alpina B7 vehicles. The top child seat tether anchor on the rear middle seat may not be readily accessible. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 225, Section 6.1(b) "Child Restraint Anchorage Systems."

    Consequence: A child restraint system placed on the vehicle's rear middle seat without utilizing the three-point safety belt, could increase the risk of injury in the event of a crash.

    Remedy

    BMW will notify owners, and dealers will install a top tether anchor cover at the rear middle seating position. Until vehicles are remedied, owners will be instructed to utilize the outboard rear seating positions which are equipped with an accessible top tether anchor, or, the middle rear seating position and the vehicle's three-point safety belt. The recall began August 20, 2020. Owners may contact BMW customer service at 1-800-525-7417.

2021 BMW 4-Series on the road

22,937 2021 BMW 4-Series units were sold new in the US — a key signal for the size of today's used-market inventory.

How the 2021 BMW 4-Series stacks up against rivals

The most-shopped alternatives in the same segment. Each link opens a side-by-side reliability and cost comparison.

What you get in a 2021 BMW 4 Series report

NMVTIS title brand history
Odometer readings & rollback detection
Accident & damage records
Auction sales with photos
Open safety recalls
Theft & stolen vehicle check

Check a 2021 BMW 4 Series now

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2021 BMW 4 Series — Frequently asked questions

Is the 2021 BMW 4 Series reliable?

The 2021 BMW 4 Series has a reliability score of 57/100 based on aggregated recall and owner-complaint data.

How many recalls does the 2021 BMW 4 Series have?

20 NHTSA safety recalls have been issued for the 2021 BMW 4 Series. A VIN check confirms whether any remain unrepaired on a specific vehicle.

What are the most common 2021 BMW 4 Series problems?

The most-reported 2021 BMW 4 Series problem areas are: Electrical System (16), Unknown Or Other (7), Power Train (4).

Should I run a VIN check on a 2021 BMW 4 Series?

Yes. A VIN report verifies title brands, odometer history, accident records, and recall completion on a specific 2021 BMW 4 Series, complementing the model-year reliability data on this page.