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Electrical systemPart report

2021 BMW M440I Electrical system Problems

Complaints
1about this part
Share
17%of 6 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 electrical system of the 2021 BMW M440I, 17% of the 6 complaints for this model year. 2 recall campaigns on record are filed under a similar system.

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 engine starter motor system failed, specifically involving an intermittent no-start condition related to a pinion starter line break / internal component defect. The vehicle and all original mechanical components are fully intact and available for professional inspection upon request. The engine starter motor system failed, specifically involving an intermittent no-start condition related to a pinion starter line break / internal component defect. The vehicle and all original mechanical components are fully intact and available for professional inspection upon request. …”

NHTSA complaint #11770073, filed 2026-10

Related recalls

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2021117%

Other parts of the 2021 BMW M440I

Engine
2 complaintsBrakes
1 complaintsForward collision avoidance
1 complaintsOther or unknown
1 complaintsSeat belts
1 complaintsSeats
1 complaintsTransmission and drivetrain
1 complaints

← All problems reported for the 2021 BMW M440I

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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