2021 BMW M340I Fuel system Problems
- Complaints
- 1about this part
- Share
- 9%of 11 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the fuel system of the 2021 BMW M340I, 9% of the 11 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Here’s a strong version that sounds frustrated but still credible and harder to dismiss: I’ve owned many vehicles over the years, and this BMW has been, without question, the most problematic car I’ve ever had. The list of issues has been absurd for a vehicle in this price range and from a brand that markets itself as a premium luxury manufacturer. …”
NHTSA complaint #11738468, filed 2026-05Related service bulletins
- 10239602Jun 1, 2023A vehicle arrives at your center to be diagnosed for a micro-leak in the fuel evaporative (EVAP) system (NVLD natural vacuum leak detection). For this condition, the following…
- 10212784Apr 1, 2022The belt pulley on the mechanical coolant pump may fracture allowing the engine drive belt to come off the coolant pump and alternator.
- 10208176Jan 1, 2022The belt pulley on the mechanical coolant pump may fracture allowing the engine drive belt to come off the coolant pump and alternator.
- 10184577Nov 1, 2020FUEL FILLER DOOR WILL NOT OPEN: The fuel filler door (aka flap) will not open. In rare cases, if the vehicle is locked using the remote control key and the fuel filler door is…
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2021 | 1 | 9% |
| 2020 | 3 | 5% |
Other parts of the 2021 BMW M340I
7 complaintsTransmission and drivetrain
3 complaintsElectrical system
2 complaintsBrakes
1 complaintsSteering
1 complaintsSuspension
1 complaints
← All problems reported for the 2021 BMW M340I
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology