2020 BMW M340I Transmission and drivetrain Problems
- Complaints
- 2about this part
- Share
- 4%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 2 complaints about the transmission and drivetrain of the 2020 BMW M340I, 4% 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 oil pump went out causing Low pressure codes and resulting in me paying over 2 grand to get it repaired, They super seeded the oil pump they used to use with a new one and theirs many other reports online etc of the 2020 bmw m340 oil pump going out due to plastic internals which can lead to engine failure .”
NHTSA complaint #11697131, filed 2025-11“Component: Front differential / xDrive drivetrain system. Vehicle is available for inspection upon request. Description: My 2020 BMW M340i xDrive has exhibited a persistent whining noise from the front drivetrain since approximately 38,000 miles. The noise varies with speed and load and appears to originate from the front differential. A BMW dealership inspected the vehicle and acknowledged the noise but declined repair under warranty. This condition is consistent with premature wear of internal differential components such as gears or bearings, or improper lubrication. …”
NHTSA complaint #11731034, filed 2026-04Related service bulletins
- 10242688Aug 1, 2023?A software error may cause an unwanted pressure pulsation in the transmission during a "Remote Engine Start."
- 10239603Jun 1, 2023BMW AG has issued an Emissions Recall (effective March 17, 2023) on a certain Model Year 2021 - 2023 BMW vehicles that were produced between June 16, 2020, and December 13, 2022…
- 10235178Mar 1, 2023BMW AG has issued a Delivery Stop: Due to a software failure, there is the possibility that the transmission does not go into "sleep mode" if the car is turned off.
- 10233157Feb 1, 2023There is a howling or whistling noise from under the vehicle at 30 -37 mph (50 -60 km/h) when driving after a cold start, when the outside temperature is 32 F (0 C) or lower. The…
- 10214260Feb 1, 2022When driving off from a standstill, a delayed or sluggish throttle response may be noticed sporadically.
- 10198906May 1, 2021SERVICE ACTION: PROGRAM OR REPLACE DUAL STORAGE SYSTEM BATTERY: A software error intermittently causes a continuous resetting of the microcontroller in the power management…
- 10190858Mar 1, 2021ACCESSORIES DO NOT POWER UP FROM THE FRONT 12 V POWER SOCKET PLUG: Customer is unable to power up or charge accessories through a plug adapter inserted in the front 12-volt power…
Transmission and drivetrain: other model years
Other parts of the 2020 BMW M340I
42 complaintsOther or unknown
9 complaintsElectrical system
6 complaintsEngine cooling
4 complaintsFuel system
3 complaintsTires
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