2021 BMW M340I Brakes Problems
- Complaints
- 1about this part
- Share
- 9%of 11 total for the year
- Median mileage
- 4,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the brakes of the 2021 BMW M340I, 9% of the 11 complaints for this model year. Where a mileage was given, the median is 4,000 miles.
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.
“The contact owns a 2021 BMW M340I. The contact stated while driving various speeds, the vehicle independently shifted from reverse(R) to drive(D) to park(P). The contact stated that while driving approximately 10 MPH and attempting to stop the vehicle, the brake pedal was depressed and went to the floorboard. The contact stated that the brake failed to operate as designed. The vehicle was towed to a dealer who diagnosed that the vacuum pump needed to be replaced. The vehicle was repaired. The contact stated that an unknown transmission repair was performed. …”
NHTSA complaint #11491782, filed 2022-11, 4,000 milesRelated service bulletins
- 10244237Oct 13, 2023Functional noises (squealing/honking) when braking shortly before the vehicle comes to a stop. CAUSE Material-
- 10211855Mar 1, 2022After replacing tires and successfully programming the Tire Pressure Monitoring System (TPMS) using the RDC tool to transfer the QR code information on the sidewall, the…
- 10204626Jul 1, 2021The yellow CCM, ID code 42, lights up when starting the vehicle. ID code 00042: Brake system. It is possible to continue driving. Additional notes: Avoid abrupt braking as far as…
- 10182909Oct 1, 2020TICKING NOISE FROM DRIVERS FOOTWELL DURING LIGHT BRAKING WHILE COASTING: A ticking sound can be heard from the drivers footwell while coasting with the engine OFF. The noise…
- 10182610Oct 1, 2020TICKING NOISE FROM DRIVERS FOOTWELL DURING LIGHT BRAKING WHILE COASTING: A ticking sound can be heard from the drivers footwell while coasting with the engine OFF. The noise…
Brakes: other model years
Other parts of the 2021 BMW M340I
7 complaintsTransmission and drivetrain
3 complaintsElectrical system
2 complaintsFuel system
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