2023 Bmw M340i problems, complaints & recalls
Most-reported problem areas: Engine (1)
🧭 Reliability snapshot
Compared against other Bmw M340i model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (1)
Electrical System:body Control Module:software 2023-02-23 · campaign 23V118000 · 120 vehicles
Defect: BMW of North America, LLC (BMW) is recalling certain 2023 330i, 330i xDrive, M340i, M340i xDrive, M3, 330e, 330e xDrive, 430i Convertible, 430i xDrive, M440i, 2022-2023 430i, 430i xDrive, M440i xDrive, i4 eDrive40, and i4 M50 vehicles. During a service visit, a replacement electronic control unit (ECU) may have been installed with incorrect programming, which can cause the automatic door locking (ADL) function to not lock the doors as intended.
Risk: Doors that do not lock as intended while the vehicle is in motion may open during a crash, increasing the risk of injury.
Fix: Dealers will update the ECU software, free of charge. Owner notification letters were mailed April 10, 2023. Owners may contact BMW customer service at 1-800-525-7417.
Service bulletins (46)
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.
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.
Service Brakes, Hydraulic 2023-10-13 · B340714 · Service Bulletin/Repair Instructions
functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop. cause material-
Power Train:driveline:driveshaft 2023-09-29 · MCAS4023 · Service Bulletin/Repair Instructions
bmw ag has requested the inspection of all dealer stock of the following part number(s) listed below to ensure the spacer is conformed to drawing.
Power Train 2023-08-01 · B240323 · Service Bulletin/Repair Instructions
?a software error may cause an unwanted pressure pulsation in the transmission during a "remote engine start."
Suspension 2023-07-01 · B410323 · Service Bulletin/Repair Instructions
the left front suspension's aluminum strut dome (general area circled) was incorrectly riveted to the body's wheel-well.
Showing the 6 most recent of 46 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-10-07 · Engine · 💥 crash“while parallel parking in a parking structure; my car accelerated full throttle backing up hitting the back wall ; then i tried going forward to straighten the car up, it accelerated full throttle forward hitting the front wall. i had an doctors appt. there and decided to still straighten car and i said if it goes full throttle again i would…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.