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Transmission and drivetrainPart report

2021 BMW 540I Transmission and drivetrain Problems

Complaints
3about this part
Share
33%of 9 total for the year
Median mileage
66,700miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the transmission and drivetrain of the 2021 BMW 540I, 33% of the 9 complaints for this model year. Where a mileage was given, the median is 66,700 miles. 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 contact owns a 2021 BMW 540I. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. There was an abnormal sound coming from the vehicle before the vehicle lost motive power. No warning lights were illuminated. The contact stated that the vehicle failed to respond while in drive(D) or reverse(R). The vehicle was towed to the dealer, where it was diagnosed with a driveshaft failure. The contact was informed that the driveshaft needed to be replaced. The vehicle was not repaired. …”

NHTSA complaint #11727007, filed 2026-03, 66,700 miles

“Starter engine failure. Car failed to start multiple times. Major safety hazard that can cause a short circuit, melt wiring harnesses, and spark an engine bay fire posing an immediate threat to life. Problem was inspected and confirmed by a dealer. Multiple waring lamps and messages appeared. Dealer report stated: STARTER MOTOR FAULTY. ENGINE ELECTRICAL SYSTEM CONCERN: C/S: REPEAT START ATTEMPT INTERMITTEN WARNING LIGHTS. Please issue recall for the safety of all drivers.”

NHTSA complaint #11749530, filed 2026-07

Related recalls

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
2023117%
2022467%
2021333%
2019217%
201826%
201715%
2003114%
2001320%
1999314%
199814%
199714%
1995220%
1994450%

Other parts of the 2021 BMW 540I

Brakes
3 complaints
Electrical system
2 complaints
Engine
1 complaints
Forward collision avoidance
1 complaints
Seat belts
1 complaints
Steering
1 complaints
Wheels
1 complaints

← All problems reported for the 2021 BMW 540I

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