2021 BMW M340I
Only 11 complaints on file — too few for a fair verdict.
This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.
Only 11 complaints on file — too few for a fair verdict. The data below is complete but unranked.
- Complaints
- 11
- Recalls
- 6
- Investigations
- 1
- Top problem
- —
Too few to rank
Campaigns on file for 2021
Opened by NHTSA
Not enough data
Complaints per year
2021: 11 complaints
View as data table
| Year | Complaints |
|---|---|
| 2019 | 0 |
| 2020 | 57 |
| 2021 | 11 |
| 2022 | 7 |
| 2023 | 1 |
Known problem areas
Only 11 complaints on file for this model year — too few to rank by share. Raw counts only, below.
Engine
7 of 11 total reports mention: engine.
Show complaint excerpts
At approximately 20,000 miles, vehicle indicated excessively low oil. The dealer indicated oil level was excessively low but did not identify the problem,. The vehicle was filled and returned to owner.
NHTSA ODI report, 2023-11-03
At approximately 20,000 miles, vehicle indicated excessively low oil. The dealer indicated oil level was excessively low but did not identify the problem,. The vehicle was filled and returned to owner.
NHTSA ODI report, 2023-11-03
Power train
3 of 11 total reports mention: power train, most commonly citing automatic transmission.
Show complaint excerpts
While driving through an intersection and making a left turn, a failure of the engine water pump pulley caused the pulley to break apart.
NHTSA ODI report, 2025-04-23
The contact owns a 2021 BMW M340I. The contact stated while driving various speeds, the vehicle independently shifted from reverse(R) to drive(D) to park(P).
NHTSA ODI report, 2022-11-01
Also filed under Service brakes
Electrical system
2 of 11 total reports mention: electrical system.
Suspension
1 of 11 total reports mentions: suspension.
Steering
1 of 11 total reports mentions: steering.
Safety timeline
6 recalls · 1 investigation · oldest first
To check one car, enter its VIN on the NHTSA recall page. Check a VIN →
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R
2021-03-30Electrical system20V761000 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,...
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.
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2021-04-16Back over prevention21V096000 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,...
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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2021-06-25Seat belts21V298000 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.
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2021-09-03Seat belts21V554000 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),...
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.
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I
2023-01-27Defect petitionClosed 2023-08-07 Pedestrian alert sounds
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2023-05-22Seats23V211000 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.
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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2023-10-12Electrical system, seat belts23V584000 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.
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.
Buy-smart checklist
2021 BMW M340I — pre-purchase inspection
Inspect
- Engine: 7 reports on file for this year.
- Power train: 3 reports on file for this year.
- Electrical system: 2 reports on file for this year.
Verify these recalls were completed
- Recall 20V761000 · Electrical system
- Recall 21V096000 · Back over prevention
- Recall 21V298000 · Seat belts
- Recall 21V554000 · Seat belts
- Recall 23V211000 · Seats
- Recall 23V584000 · Electrical system, seat belts
FAQ
- Is the 2021 BMW M340I reliable?
- There isn't enough NHTSA complaint data on file yet to give this model year a verdict.
- What are the most common problems with the 2021 BMW M340I?
- The most-reported component is engine, accounting for 64% of complaints on file.
- How many recalls does the 2021 BMW M340I have?
- 6 recalls on file for this model year.
Data updated 2026-11-01 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.