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Transmission and drivetrainPart report

2005 BMW 645CI Transmission and drivetrain Problems

Complaints
1about this part
Share
3%of 33 total for the year
Median mileage
98,345miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 1 complaints about the transmission and drivetrain of the 2005 BMW 645CI, 3% of the 33 complaints for this model year. Where a mileage was given, the median is 98,345 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.

“I was driving on the highway and my Bmw 645 fault message displayed (transmission related malfunction,drive moderately). After that,the service engine soon light came on,along with a new fault message that displayed (increased emission). After that, the car speed abruptly went from 60, to (what felt like first gear),then just cut off!! There were cars and trucks all around me,doing the speed limit of 60 or higher,just missing me,while I'm sitting stuck in the middle of the highway!! …”

NHTSA complaint #10608586, filed 2014-07, 98,345 miles

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
200513%
200419%

Other parts of the 2005 BMW 645CI

Air bags
10 complaints
Brakes
6 complaints
Seat belts
5 complaints
Electrical system
4 complaints
Seats
4 complaints
Engine
3 complaints
Steering
3 complaints
Engine cooling
2 complaints
Exterior lighting
2 complaints
Other or unknown
2 complaints
Body and structure
2 complaints
Suspension
1 complaints

← All problems reported for the 2005 BMW 645CI

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