2005 BMW 645CI Engine Problems
- Complaints
- 3about this part
- Share
- 9%of 33 total for the year
- Median mileage
- 101,672miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the engine of the 2005 BMW 645CI, 9% of the 33 complaints for this model year. Where a mileage was given, the median is 101,672 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 own a Bmw 645CI 2005 convertible I have issues yes isssues with this vechile, first issue is the infamous idrive that never really worked properly since I purchased the car, it blinks on and off for 30mins then it would magically come on until one day it just didn't come back on this was after a trip to the dealer to get the convertible top lock reprogrammed.. …”
NHTSA complaint #11088512, filed 2018-04, 105,000 miles“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“Water started leaking from the car and once checked found that the aluminum pipe under the intake had a cracked in it and had to replace the pipe with a new metal pipe, which cost me 1500.00 and the Bmw mechanic states most of all these cars experience this same problem, which can lock up your motor or cracked the heads on it.”
NHTSA complaint #10598735, filed 2014-06Related service bulletins
- 10151068Feb 1, 2016This Service Information bulletin supersedes SI B07 03 14 dated October 2015. Diagnosing Stored Fault Codes to Help Avoid Repeat Repair Visits. Fault codes stored in vehicles…
- 10147598Jan 1, 2015"SUBJECT N62TU: ISTA Service Function for DME ""RAM Backup"". The ISTA Service Function test plan should be performed to clear stored values in the DME RAM memory after repairs…
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2005 | 3 | 9% |
| 2004 | 1 | 9% |
Other parts of the 2005 BMW 645CI
10 complaintsBrakes
6 complaintsSeat belts
5 complaintsElectrical system
4 complaintsSeats
4 complaintsSteering
3 complaintsEngine cooling
2 complaintsExterior lighting
2 complaintsOther or unknown
2 complaintsBody and structure
2 complaintsSuspension
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2005 BMW 645CI
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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