2020 BMW M340I Fuel system Problems
- Complaints
- 3about this part
- Share
- 5%of 57 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the fuel system of the 2020 BMW M340I, 5% of the 57 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.
“My vehicle doesn’t read the oil level since the fuel pump that BMW used to manufacture the car is made out of plastic material. There has been hundred of complaints about the same issue with the oil pump not working properly due to the fact that BMW used plastic instead of metal etc. I would like for the NHTSA to take a look at this issue and please consider making it a recall for the users that are having this “Oil Pump” issue please thank you.”
NHTSA complaint #11658972, filed 2025-05“Oil pump appears to have failed. Told plastic components inside pump. BMW issued a new part number and changed pump to all metal internals. This is standard on later production dates now. Pump failure causes engine failure and oil gauge failure to read out. Head gasket replacement which may or may not be related.”
NHTSA complaint #11517843, filed 2023-04Related 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 2020 BMW M340I
42 complaintsOther or unknown
9 complaintsElectrical system
6 complaintsEngine cooling
4 complaintsTires
2 complaintsTransmission and drivetrain
2 complaintsBrakes
1 complaintsWheels
1 complaints
← All problems reported for the 2020 BMW M340I
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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