BMW 645CI Problems by Model Year
NHTSA recorded 44 consumer complaints across the 2 model years of the BMW 645CI (2004–2005) that have at least 5 complaints. 2005 has the most, with 33. Across all years, the part named most often is air bags (15 mentions). Pick a model year below to see its parts, mileage, recalls and service bulletins.
All 645CI model years
Years with fewer than 5 complaints are not listed. The score compares years of the same model, allowing for the era and for how long each year has collected complaints: 50 is a typical year, lower means fewer complaints. It is not adjusted for sales volume.
| Year | Complaints | Median mi | Recalls | TSBs | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|
| 2005 | 33 | 74,115 | 0 | 47 | Not compared (before 2008) | Falling |
| 2004 | 11 | 75,000 | 0 | 45 | — | Not enough data |
Parts named most often, all years
Counts add up complaint mentions across the listed years. A complaint can name several parts.
- Air bags15 27%
- Seat belts9 16%
- Brakes8 14%
- Electrical system7 13%
- Seats6 11%
- Steering4 7.1%
- Engine4 7.1%
- Engine cooling3 5.4%
Example complaints
One per model year, chosen for length and detail. Personal details are removed. They are consumer reports, not findings.
2005: “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 miles2004: “I have the same problem in which this is the number you have provided but not including my yr. It was only for 2006 models and I have a 2004 but same exact problems. I have read and seen others with the same problem. Some dealerships honored the recall or service offer but they will not for me and this is a safety issue not a luxury option. Nhtsa action number : ea08001 NHTSA recall campaign number : 08v384000.”
NHTSA complaint #10604959, filed 2014-06, 56,555 milesOther BMW models
3,165 complaintsBMW 328I
2,576 complaintsBMW X3
2,016 complaintsBMW 325I
1,377 complaintsBMW Z4
1,271 complaintsBMW 3 Series
832 complaintsBMW 528I
830 complaintsBMW 330I
813 complaints
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. Methodology