2021 Bmw M440i problems, complaints & recalls
Most-reported problem areas: Engine (2) · Service Brakes (1) · Seats (1)
Safety recalls (5)
Electrical System:software 2023-08-16 · campaign 23V584000 · 144 vehicles
Defect: 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."
Risk: An audible chime that does not properly alert the driver to fasten their seat belt increases the risk of injury in a crash.
Fix: 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.
Seat Belts 2021-07-21 · campaign 21V554000 · 21,537 vehicles
Defect: 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
Risk: During a crash, a seat belt retractor that does not function as intended increases the risk of injury.
Fix: 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).
Air Bags:side/Window:thorax 2021-03-15 · campaign 21V176000 · 1,850 vehicles
Defect: 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.
Risk: An air bag that deploys incorrectly can increase the risk of injury in a crash.
Fix: 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.
Back Over Prevention:software 2021-02-19 · campaign 21V096000 · 13,858 vehicles
Defect: 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 x
Risk: 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.
Fix: 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.
Electrical System:12v/24v/48v Battery 2020-12-09 · campaign 20V761000 · 812 vehicles
Defect: 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.
Risk: Increased electrical resistance can increase the risk of a fire.
Fix: 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.
Service bulletins (124)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Engine 2026-05-06 · B010126 · Warranty Program/Extension
the evap systems purge (vent) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in-service / delivery date.
Visibility:defroster/Defogger/Hvac System 2024-02-16 · B640422 · Service Bulletin/Repair Instructions
an interference noise (groaning noise) can be heard from within the heating and air-conditioning unit in thecenter of the instrument panel. the groaning noise always occurs when either a ventilation flap, air stratification flap or the recirculated airflap moves to a different position. due to the
Electrical System 2024-01-11 · B611305 · Service Bulletin/Repair Instructions
the electrical system of bmw vehicles has been subject to an ongoing development process over the last few years. this has led to increased demands being placed on the battery. this document covers important information for the dealer on how to handle ã¢ââdischarged batteryã¢ââ complaints.
Steering 2024-01-08 · B360121 · Service Bulletin/Repair Instructions
at low outside temperatures (below 40 degrees f) and slow driving speeds (i.e. when parking, maneuvering)with a large steering angle, the front end can be slightly axially misaligned. this can be felt (jerking)/ heard via an acoustic acknowledgement (clunk) as seen at the 11 second mark of the vide
Equipment:electrical:infotainment 2024-01-05 · B610524 · Service Bulletin/Repair Instructions
the central information display goes black intermittently due to resets of the head unit (hu-h3). faultb7f8f9 ãâãâ¢ãâãâãâãâ ãâãâ¢ãâãâãâãâhu-h: resetãâãâ¢ãâãâãâãâ will be stored in the hu-h3.
Seats 2024-01-02 · B521723 · Service Bulletin/Repair Instructions
customer states one of the front seats is inoperative. the seat heater and power supply are inoperative. during the vehicle test, the seat module does not respond. the power supply fuse for the seat module isfound to have blown.
Showing the 6 most recent of 124 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-10-15 · Power Train“bmw dealer noted "clunk on accel" at 57,152 miles on ro #224018 under engine mounts. dealer quoted $3,463.38 for engine mounts. i declined repair. clunk on acceleration is still present at 60,700 miles. same symptom as bmw service bulletin sib 27-02-20 for 4 series drive jerking/shuddering from transfer case. transfer case was serviced by non-bmw s…”
2026-10-09 · Engine“the engine starter motor system failed, specifically involving an intermittent no-start condition related to a pinion starter line break / internal component defect. the vehicle and all original mechanical components are fully intact and available for professional inspection upon request. the engine starter motor system failed, specifically involvi…”
2026-07-28 · Seats“i am seeing a lot of concerns regarding the seatbelt extenders, the buckle end pretensioner, seat wiring harness and the yellow box connectors that are where the main power and air bag srs connections sit under the drivers seat. the seat harnesses are catching in the sliding track mechanism during forward and backward adjustments, isn't that a man…”
2025-06-17 · Engine · 🔥 fire“the car basically blew up on the highway at rush hour. bmw knows of this issue with this model and has some of their other models under a recall for this very thing. i have a service action from bmw saying that the water pump assembly needs to be fixed before this very problem occurs but for some reason even though our model is on the service rep…”
2021-09-29 · Unknown Or Other“brought a new 2021bmw m440 only 5 months ago, garage kept, has less than 4,000 miles. i woke up with a 10” crack across windshield @ 6:30 am on 9/28/2021with popping sounds. windshield was shown on camera the night prior with no damage and shows no apparent evidence of ever getting hit. no scratches or chips. on 9/29/21 @ 7am car had more popping s…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.