Complaints by model year
| Year | Complaints | vs. typical* | Recalls | Top problem | Verdict |
|---|---|---|---|---|---|
| 2022 | 7 | 1.3× | 1 | Steering | Average |
| 2021 | 11 | −23% | 6 | Engine | Average |
| 2020 | 53 | — | 10 | Engine | Limited data |
| 2019 | 0 | — | 5 | — | Few |
* Complaints compared with the median M340I year at the same age, so new and old years are judged fairly. How this works.
Most common BMW M340I problems
Latest BMW M340I recalls
Engine and engine cooling › Engine › Engine control module (ECU/ECM) › Software
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.
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.
Electrical system › Software
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.
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.
Engine
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.
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.
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…
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.
Frequently asked questions
What years of the BMW M340I should you avoid?
None of the BMW M340I years has an unusually high number of complaints compared with the others at the same age.
What is the best year for the BMW M340I?
2021 has the fewest complaints compared with other M340I years at the same age. Newer years can look better simply because fewer complaints have come in yet, so we compare like with like.
What are the most common BMW M340I problems?
Across all years, owners report the most problems with the engine & cooling (50), electrical system (9) and transmission & drivetrain (6). Engine complaints peak in the 2020 model year.
How many recalls has the BMW M340I had?
13 recalls across 2019–2022. The model year with the most is 2020. See all BMW M340I recalls by year.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.