2004 BMW 645CI
Only 11 complaints on file — too few for a fair verdict.
This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.
Only 11 complaints on file — too few for a fair verdict. The data below is complete but unranked.
COMPLAINTS PER YEAR
View as data table
| Year | Complaints |
|---|---|
| 2004 | 11 |
| 2005 | 33 |
| 2006 | 1 |
KNOWN PROBLEM AREAS
Only 11 complaints on file for this model year -- too few to rank by share. Raw counts only, below.
4 of 11 total reports mention: seat belts.
4 of 11 total reports mention: air bags.
3 of 11 total reports mention: electrical system.
Show complaint excerpts
The idrive system in my car continues to cut on and off, this eventually caused my car to shut off on me two times while in traffic with no warning or indication of the shut off. The sensor alert continuously goes off for everything in the car.
NHTSA ODI report, 20210906
2004 BMW 645CI. CONSUMER STATES PROBLEM WITH VEHICLE STALLING SEVERAL TIMES. *TGW AN INDEPENDENT REPAIR SHOP PERFORMED A DIAGNOSIS AND CODES FOR THE CAMSHAFT SENSOR AND SOLENOIDS APPEARED. THE PARTS WERE REPLACED, HOWEVER THE STALLING CONTINUED.
NHTSA ODI report, 20110401
2 of 11 total reports mention: service brakes.
Show complaint excerpts
TL* THE CONTACT OWNS A 2004 BMW 645CI. THE CONTACT STATED THAT THE VEHICLE WAS REPAIRED UNDER NHTSA CAMPAIGN ID NUMBER 10V446000 (SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM).
NHTSA ODI report, 20121116
TL* THE CONTACT OWNS A 2004 BMW 645CI. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 30 MPH, THE BRAKE PEDAL WAS APPLIED; HOWEVER THERE WAS NO RESPONSE. THE CONTACT REPEATEDLY ENGAGED THE BRAKE PEDAL AND THEN ENGAGED THE EMERGENCY BRAKE.
NHTSA ODI report, 20120627
2 of 11 total reports mention: seats.
Show complaint excerpts
PASSENGER SEAT OC3 OCCUPANCY MAT NOT WORKING-IT SHOWS A FAULT CODE- I TOOK IT TO BIRMINGHAM BMW AND WAS TOLD I HAVE TO GET A NEW BMW BATTERY AND BATTERY CABLE.THEY CHARGED ME $ 120 TO DIAGNOSE THIS PROBLEM BUT DID NOTHING TO FIX THE OC3 MAT THAT...
NHTSA ODI report, 20180806
SAFETY TIMELINE
No recalls on file for this model year.
BUY-SMART CHECKLIST
2004 BMW 645CI — pre-purchase inspection
- Test/inspect for seat belts issues (4 reports on file for this year).
- Test/inspect for air bags issues (4 reports on file for this year).
- Test/inspect for electrical system issues (3 reports on file for this year).
FAQ
Is the 2004 BMW 645CI reliable?
There isn't enough NHTSA complaint data on file yet to give this model year a verdict.
What are the most common problems with the 2004 BMW 645CI?
The most-reported component is seat belts, accounting for 36% of complaints on file.
How many recalls does the 2004 BMW 645CI have?
No recalls are on file for this model year.
Data updated 2026-07-11 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.