BMW 645CI · model year

2005 BMW 645CI

47 NHTSA complaints for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 2005BMW645CI carries 47 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 4 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.

Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2005 645CI is air bags with 10 filings, followed by seat belts (5) and electrical system (4). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.

NHTSA currently has 34 investigation files overlapping the 2005 645CI. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.

47
Complaints
0
Crashes
4
Fires
0
Injuries
0
Deaths

Total Complaints

47 filings

Crashes Reported

0 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

At or below the fleet median complaint volume.

Complaints by Component

ComponentCount
AIR BAGS10
SEAT BELTS5
ELECTRICAL SYSTEM4
SEATS3
SERVICE BRAKES, HYDRAULIC3
STEERING3
ENGINE3
ENGINE AND ENGINE COOLING2
SERVICE BRAKES2
UNKNOWN OR OTHER2
EXTERIOR LIGHTING2
SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER1
STRUCTURE1
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM1
WHEELS1

Recent Complaints

20210603FireEXTERIOR LIGHTING

The contact owns a 2005 BMW 645CI. The contact stated that while the vehicle was at the independent mechanic for the front driver’s side bulb replacement, the mechanic informed the contact that the headlight wires were brittle and burnt. The dealer was made aware of the failure and informed the contact to buy new headlamps. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to file a complaint with the NHTSA. The failure mileage was 100,046.

Mileage: 100,046

20210211SERVICE BRAKES, HYDRAULIC

TL* THE CONTACT OWNS A 2005 BMW 645CI. THE CONTACT STATED THAT AN UNKNOWN FLUID WAS LEAKING FROM ENGINE COMPARTMENT. THE CONTACT STATED NO WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED WITH NEEDING THE VACUUM PUMP TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. UPON INVESTIGATION, THE CONTACT ASSOCIATED THE FAILURE WITH NHTSA CAMPAIGN NUMBER: 10V446000 (SERVICE BRAKES, HYDRAULIC) HOWEVER, THE VIN WAS NOT INCLUDED. THE MANUFACTURER HAD NOT BEEN INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 120,000.

Mileage: 120,000

20181116AIR BAGS

I PLACED AN ITEM IN THE FRONT PASSENGER SIDE SEAT WITHOUT FASTENING THE SEATBELT AND THE AIRBAG LIGHT CAME ON AND STAYED ON... THIS IS THE FIRST TIME THIS HAS EVER HAPPENED. THE CAR WAS STATIONARY BUT THE ENGIN WAS RUNNING.

Mileage: 65,000

20181116SEAT BELTS

I PLACED AN ITEM IN THE FRONT PASSENGER SIDE SEAT WITHOUT FASTENING THE SEATBELT AND THE AIRBAG LIGHT CAME ON AND STAYED ON... THIS IS THE FIRST TIME THIS HAS EVER HAPPENED. THE CAR WAS STATIONARY BUT THE ENGIN WAS RUNNING.

Mileage: 65,000

20180630ELECTRICAL SYSTEM

"TAKATA RECALL" HEADLIGHT WIRING BURNED

20180630EXTERIOR LIGHTING

"TAKATA RECALL" HEADLIGHT WIRING BURNED

20180416ELECTRICAL SYSTEM

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.. SO THE CAR WAS INCLUDED IN THE LAWSUIT SO I TAKES IT TO THE DEALER FOR THE REPROGRAMMING AND MY CAR CAME OUT WORST THEN IT WENT IN THE IDRIVE NEVER WORKED TO THIS DAY WHICH IS 04/16/2018, MY TOP ONLY OPENS WITH THE PASSENGER SIDE DOOR SLIGHTLY OPENED YES THE DOOR HAS TO BE OPEN FOR THE TOP TO OPERATE... THIS IS WHAT THE DEALER TOLD ME SO I WAS SO CONFUSED OF WHAT THE REPROGRAMMING WAS FOR ? I NEED ANSWERS AND IT'S NOTHING I DID AS A OWNER I WAS VERY TO THE BOOK WHEN IT CAME TO OPENING MY TOP AND OPERATING THE IDRIVE AND ETC... THE INFAMOUS COOLANT LEAK ALSO COMES FROM A DEFECTIVE BIMMER PIPE THAT WAS INSTALLED BY THE MAKERS

Mileage: 105,000

20180416ENGINE

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.. SO THE CAR WAS INCLUDED IN THE LAWSUIT SO I TAKES IT TO THE DEALER FOR THE REPROGRAMMING AND MY CAR CAME OUT WORST THEN IT WENT IN THE IDRIVE NEVER WORKED TO THIS DAY WHICH IS 04/16/2018, MY TOP ONLY OPENS WITH THE PASSENGER SIDE DOOR SLIGHTLY OPENED YES THE DOOR HAS TO BE OPEN FOR THE TOP TO OPERATE... THIS IS WHAT THE DEALER TOLD ME SO I WAS SO CONFUSED OF WHAT THE REPROGRAMMING WAS FOR ? I NEED ANSWERS AND IT'S NOTHING I DID AS A OWNER I WAS VERY TO THE BOOK WHEN IT CAME TO OPENING MY TOP AND OPERATING THE IDRIVE AND ETC... THE INFAMOUS COOLANT LEAK ALSO COMES FROM A DEFECTIVE BIMMER PIPE THAT WAS INSTALLED BY THE MAKERS

Mileage: 105,000

20180416UNKNOWN OR OTHER

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.. SO THE CAR WAS INCLUDED IN THE LAWSUIT SO I TAKES IT TO THE DEALER FOR THE REPROGRAMMING AND MY CAR CAME OUT WORST THEN IT WENT IN THE IDRIVE NEVER WORKED TO THIS DAY WHICH IS 04/16/2018, MY TOP ONLY OPENS WITH THE PASSENGER SIDE DOOR SLIGHTLY OPENED YES THE DOOR HAS TO BE OPEN FOR THE TOP TO OPERATE... THIS IS WHAT THE DEALER TOLD ME SO I WAS SO CONFUSED OF WHAT THE REPROGRAMMING WAS FOR ? I NEED ANSWERS AND IT'S NOTHING I DID AS A OWNER I WAS VERY TO THE BOOK WHEN IT CAME TO OPENING MY TOP AND OPERATING THE IDRIVE AND ETC... THE INFAMOUS COOLANT LEAK ALSO COMES FROM A DEFECTIVE BIMMER PIPE THAT WAS INSTALLED BY THE MAKERS

Mileage: 105,000

20180224UNKNOWN OR OTHER

CONVERTIBLE TOP WARNING CAME ON SAYING IT WAS NOT LOCKED, COULD NOT USE THE WINDOWS OR ANYTHING

20170308AIR BAGS

WHILE DRIVING, A SYMBOL ON THE DASBOARD DISPLAYED THE FOLLOWING ALERT MESSAGE "FAULT IN PASSENGER-RESTRAINT SYSTEM AFFECTING AIRBAG, BELT TENSIONER OR BELT-FORCE LIMITER." THE VEHICLE WAS STATIONARY DURING THIS OCCURANCE.

Mileage: 111,000

20170308SEAT BELTS

WHILE DRIVING, A SYMBOL ON THE DASBOARD DISPLAYED THE FOLLOWING ALERT MESSAGE "FAULT IN PASSENGER-RESTRAINT SYSTEM AFFECTING AIRBAG, BELT TENSIONER OR BELT-FORCE LIMITER." THE VEHICLE WAS STATIONARY DURING THIS OCCURANCE.

Mileage: 111,000

20161007VEHICLE SPEED CONTROL

SOME DAY WHEN I COME OUT TO MY CAR IT WANT GO IN DRIVE AND DYNAMIC MALFUNCTION & TRANSMISSION MALFUNCTION POP UP ON THE SCREEN

20161007STEERING

SOME DAY WHEN I COME OUT TO MY CAR IT WANT GO IN DRIVE AND DYNAMIC MALFUNCTION & TRANSMISSION MALFUNCTION POP UP ON THE SCREEN

20161007SUSPENSION

SOME DAY WHEN I COME OUT TO MY CAR IT WANT GO IN DRIVE AND DYNAMIC MALFUNCTION & TRANSMISSION MALFUNCTION POP UP ON THE SCREEN

20160613SERVICE BRAKES

THE BRAKE VACUUM PUMP SEALS ARE LEAKING. THIS ULTIMATELY WILL AFFECT THE BRAKE ASSIST AND POTENTIALLY RESULT IN FAILURE TO STOP THE VEHICLE WITHIN PRESCRIBED STOPPING DISTANCES CREATING POTENTIAL FOR A CRASH. THIS PROBLEM WAS IDENTIFIED BY THE LOCAL BMW DEALERSHIP IN HIGHLANDS RANCH DENVER. OCT 1 2010 BMW RECALLED 198,000 VEHICLES INCLUDING V8 AND 6 SERIES VEHICLES FOR THIS EXACT SAME PROBLEM BUT MY VIN SHOWS NO RECALL NOTICE HOWEVER IT HAS THE EXACT SAME COMPONENT EXPERIENCING THE EXACT SAME ISSUES AND BMW IS REFUSING TO ACKNOWLEDGE THAT MY VEHICLE SHOULD BE RECALLED AS FOR THIS VIN THERE ARE NO OUTSTANDING NOTIFICATIONS. I REPEAT THE EXACT SAME ISSUE IS BEING EXPERIENCED ON MY VEHICLE AS WAS THE REASON FOR 198,000 VEHICLES RECALLED FROM THE NOTICE OF OCT 1 2010

Mileage: 96,500

20160310FireSEATS

MY WIFE WAS DRIVING MY KIDS TO SCHOOL, WHEN SMOKED FILLED THE CABIN OF THE CAR. SHE PANICKED AND CALLED ME AND I TOLD HER TO TURN THE CAR OFF AND GET OUT. MY SON NOTICED THAT HIS MOTHER WAS SMOLDERING. PLEASE SEE THE PICTURES ATTACHED. I CONTACTED BMW AND THEY ARE NOT WILLING TO DO ANYTHING. I LOOK ONLINE AND FOUND THE DOCUMENT ATTACHED AND NOTICED THAT THIS IS A VERY COMMON PROBLEM. HOW MANY TIMES DOES THIS NEED TO HAPPEN BEFORE SOMEONE GET HURTS SERIOUSLY. PLEASE CONSIDER A MANUFACTURER'S RECALL SO THAT THESE OBVIOUSLY DEFECTIVE WARMERS CAN BE CHECKED OR REPLACED.

Mileage: 76,000

20151207AIR BAGS

I WAS DRIVING ON THE AUTOBAHN AND MY BMW 645 AND ALL FAULT MESSAGE WERE DISPLAYED. AFTER THAT, THE CAR SPEED ABRUPTLY,THEN JUST CUT OFF!I IT RESTARTED WITH CODES AND ALL THEN SHUT OFF AGAIN. THIS CONTINUED FIVE TIMES UNTIL I REACHED MY DESTINATION. I RESTART THE CAR,AND IT STARTED, BUT THE RADIO AND DOOR SIREN WAS NOT WORKING WITH NO FAULT MESSAGES;NO SERVICE ENGINE LIGHT; AND DROVE FINE FOR A FEW MIN. AND THEN DID THE SAME THING AGAIN!! I TOOK THE CAR TO A BMW REPAIR SHOPPED TO HAVE THE FAULT CODES READ, WHICH END UP BEING A LONG LIST OF CODES.

Mileage: 102,000

20151207ELECTRICAL SYSTEM

I WAS DRIVING ON THE AUTOBAHN AND MY BMW 645 AND ALL FAULT MESSAGE WERE DISPLAYED. AFTER THAT, THE CAR SPEED ABRUPTLY,THEN JUST CUT OFF!I IT RESTARTED WITH CODES AND ALL THEN SHUT OFF AGAIN. THIS CONTINUED FIVE TIMES UNTIL I REACHED MY DESTINATION. I RESTART THE CAR,AND IT STARTED, BUT THE RADIO AND DOOR SIREN WAS NOT WORKING WITH NO FAULT MESSAGES;NO SERVICE ENGINE LIGHT; AND DROVE FINE FOR A FEW MIN. AND THEN DID THE SAME THING AGAIN!! I TOOK THE CAR TO A BMW REPAIR SHOPPED TO HAVE THE FAULT CODES READ, WHICH END UP BEING A LONG LIST OF CODES.

Mileage: 102,000

20151207SEAT BELTS

I WAS DRIVING ON THE AUTOBAHN AND MY BMW 645 AND ALL FAULT MESSAGE WERE DISPLAYED. AFTER THAT, THE CAR SPEED ABRUPTLY,THEN JUST CUT OFF!I IT RESTARTED WITH CODES AND ALL THEN SHUT OFF AGAIN. THIS CONTINUED FIVE TIMES UNTIL I REACHED MY DESTINATION. I RESTART THE CAR,AND IT STARTED, BUT THE RADIO AND DOOR SIREN WAS NOT WORKING WITH NO FAULT MESSAGES;NO SERVICE ENGINE LIGHT; AND DROVE FINE FOR A FEW MIN. AND THEN DID THE SAME THING AGAIN!! I TOOK THE CAR TO A BMW REPAIR SHOPPED TO HAVE THE FAULT CODES READ, WHICH END UP BEING A LONG LIST OF CODES.

Mileage: 102,000

Compare 2005BMW645CI to Similar Vehicles

NHTSA Investigations

View all investigations

Frequently Asked Questions

How many complaints does the 2005 BMW 645CI have?
The 2005 BMW 645CI has 47 NHTSA complaints, 0 crashes, 4 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 2005 BMW 645CI?
The most-complained component for the 2005 BMW 645CI is AIR BAGS with 10 complaints. Other frequently reported areas include SEAT BELTS and ELECTRICAL SYSTEM.
Is the 2005 BMW 645CI safe to buy?
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.

Vehicle Safety Guides

Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.