The most-reported M340i run is WBA5U9C02LF (2020 builds) with 4 complaints, 2.5× the typical run. Engine problems make up 54% of reports; 2020 is the worst model year at 1.8 complaints per run; NHTSA lists 14 recall campaigns for M340i model years 2020–2023.
Which build runs owners report most
A production run is the first 11 characters of the VIN: plant, model year, body and engine. The BMW M340i has 44 of them on record. The five runs at the top of this table hold 25% of every M340i complaint on file.
| Production run (VIN 1–11) | Year | Complaints | Involved a crash | Fire |
|---|---|---|---|---|
| WBA5U9C02LF•••••• | 2020 | — | — | |
| WBA5U9C03LF•••••• | 2020 | — | — | |
| WBA5U7C08LA•••••• | 2020 | — | — | |
| WBA5U9C05LF•••••• | 2020 | — | — | |
| WBA5U9C06LF•••••• | 2020 | — | — | |
| WBA5U9C04LF•••••• | 2020 | — | — | |
| WBA5U9C06LA•••••• | 2020 | — | — | |
| WBA5U7C07LA•••••• | 2020 | — | — | |
| WBA5U7C00LF•••••• | 2020 | — | — | |
| WBA5U9C07LF•••••• | 2020 | — | — | |
| WBA5U9C00LF•••••• | 2020 | — | — | |
| 3MW5U7J02L8•••••• | 2020 | — | — |
Each of the other 32 M340i runs has 2 complaints or fewer. ForCar has checked 81 M340i VINs so far, most often 2020, 2021, 2026 builds; 2 of them belong to one of the 12 runs above.
Which model years to check twice
Complaints per production run, so a year that simply sold more does not top the list. On the BMW M340i the gap between build years is 1.3×: a 2020 car draws 1.8 complaints per run, a 2021 one 1.4.
| Year | Per run | Complaints | Runs | Crashes |
|---|---|---|---|---|
| 2022 | 7 | 7 | — | |
| 2021 | 11 | 8 | — | |
| 2020 | 53 | 29 | — |
Heaviest year here is 2020 at 1.8 complaints per run; lightest is 2022 at 1. The 2022 line is still collecting reports, so it reads low.
What to inspect on this car
One system accounts for 54% of everything BMW M340i owners report: Engine, 46 of 71 complaints. Start the pre-purchase inspection there.
| System | Complaints | Involved a crash | Fire |
|---|---|---|---|
| Engine | — | — | |
| Unknown Or Other | — | — | |
| Electrical System | — | — | |
| Power Train | — | — | |
| Fuel/propulsion System | — | — | |
| Engine And Engine Cooling | — | — | |
| Service Brakes | — | — | |
| Steering | — | — |
Recalls to check against your VIN
NHTSA has 14 recall campaigns on the BMW M340i; the 6 below cover build years 2020 to 2023. These are for the model and year; whether one is still open on a given car, only that VIN can tell.
| Campaign | Component | Model years |
|---|---|---|
| 23V584000 | Seat Belts | 2020–2022 |
| 21V096000 | Back Over Prevention: Sensing System: Camera | 2020–2021 |
| 23V211000 | Seats | 2020–2021 |
| 23V118000 | Electrical System:body Control Module:software | 2023 |
| 20V761000 | Electrical System:12v/24v/48v Battery | 2021 |
| 21V554000 | Seat Belts | 2021 |
23V584000 was opened in 2023 on cars built from 2020: 3 years on the road before the recall.
How serious were they
| Outcome | BMW M340i | All vehicles |
|---|---|---|
| Complaints filed | 71 | 1,115,966 |
| Involved a crash | 0 (0%) | 64,194 (5.8%) |
| Involved a fire | 0 (0%) | 26,974 (2.4%) |
| Injuries reported | 0 | 58,013 |
| Deaths reported | 0 | 2,728 |
Crash-related reports run 100% below the all-vehicle rate.
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How this check works
The file behind this page holds 1,115,966 complaints filed with NHTSA between 1981 and 2026, across 298,921 production runs. The BMW M340i share of that is 71 complaints over 44 runs, 0.01% of everything on record.
Frequently asked questions
How do I check a BMW M340i VIN for free?
Enter the 17 characters above. ForCar matches the first eleven, the production run, against 71 NHTSA complaints from 44 M340i runs and 14 recall campaigns. No account, no card.
Which M340i production run has the most complaints?
WBA5U9C02LF, a 2020 build, with 4 complaints. The typical M340i run has 1.6.
Which M340i years have the most complaints?
Per production run, 2020 is heaviest at 1.8 complaints per run and 2022 lightest at 1.
How many M340i complaints involve a crash?
0% of 71 reports, against 5.8% across all vehicles; 0 involved a fire.
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