2021 BMW M340I Recalls, Complaints & Specs
6 safety recalls list the 2021 BMW M340I, and owners have filed 11 complaints with NHTSA. Check your own VIN below.
6 safety recalls for the 2021 BMW M340I
Most recent first. Recall repairs are free at any authorised dealer. Click a recall for the full defect, consequence and remedy text.
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Software (electrical system) and seat belts
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…
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.
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Seats
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.
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.
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Seat belts
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…
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…
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Buckle assembly (seat belts)
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.
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…
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Software (back over prevention) and camera (back over prevention)
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,…
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.
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12v/24v/48v battery (electrical system)
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…
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.…
11 owner complaints filed with NHTSA
Owners of the 2021 BMW M340I have filed 11 complaints with NHTSA. The average mileage at failure in those reports is 4,000 miles. Complaints peaked in 2026 with 6 filed that year.
Most-reported components
What owners are reporting
“I have been smelling a burning odor in the vehicle for almost a year which the dealership and an independent shop had not been able to diagnose. The car was recently throwing Drivetrain Error codes wh”
Owner complaint to NHTSA, July 2, 2026 · Electrical system
“The BMW B58TU oil pump thermoplastic component issue that can cause catastrophic failure to the engine. The the gen 1 oil pump was made from plastic and after issues were discovered, they switched to”
Owner complaint to NHTSA, June 29, 2026 · Engine
Fuel economy and specs
EPA ratings for the 2021 BMW M (M2 Competition Coupe, M235i xDrive Gran Coupe, M240i Convertible, M240i Coupe, …). Ranges cover every tested configuration.
| Combined | 16–26 mpg |
|---|---|
| City / Highway | 13–23 / 20–32 |
| Fuel | Premium |
| EPA class | Compact Cars, Large Cars, Midsize Cars, Subcompact Cars |
| Engine | 4/6/8/12 cyl, 2/3/4.4/6.6 L |
| Transmission | Automatic (AM-S7); Automatic (S8); Manual 6-spd |
Compare BMW M340I model years
Recall and complaint counts for every BMW M340I model year in NHTSA's database.
| Model year | Recalls | Complaints |
|---|---|---|
| 2019 BMW M340I | 5 | 0 |
| 2020 BMW M340I | 10 | 53 |
| 2021 BMW M340I | 6 | 11 |
| 2022 BMW M340I | 1 | 7 |
| 2023 BMW M340I | 1 | 0 |
Checking a specific 2021 BMW M340I
How do I know if my 2021 BMW M340I has an open recall?
Enter your 17-character VIN above. The VIN is on the driver's side dashboard (visible through the windshield), the driver's door jamb sticker, and your registration or insurance card. The check runs against NHTSA's live database and tells you which campaigns list your vehicle. 6 campaigns currently list the 2021 BMW M340I; your car may already have been repaired under some of them.
Is the recall repair free?
Yes. Under federal law, manufacturers must fix safety recalls at no charge for vehicles up to 15 years old from the date of sale to the first owner. Contact any authorised BMW dealer with your VIN and the NHTSA campaign number (for example 20V761000).
What is the difference between a recall and a complaint?
A recall is a safety campaign filed by the manufacturer or ordered by NHTSA, with a defined defect and remedy. A complaint is a report an owner sent to NHTSA; it is not verified, but patterns of complaints are what trigger NHTSA investigations and, eventually, recalls.
Other BMW models
- X53,154 complaints
- 328I2,578 complaints
- X32,004 complaints
- 325I1,386 complaints
- Z41,281 complaints
- 3 Series843 complaints
- 528I835 complaints
- 330I815 complaints
Source: NHTSA recall and complaint databases and EPA fuel economy data, October 2026. Complaint counts are owner reports to NHTSA, not verified defects. Recall counts are safety campaigns that list this model year; whether a particular car was already repaired depends on its VIN. How this data is compiled.