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2005 BMW 645CI

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

23 reports with mileage · 10 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Air Bags. Review the 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Seat Belts. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

0 crash reports4 fire reports0 injury reports

Engine complaints

3 reports
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105,000 miles · Apr 16, 2018
Electrical SystemEngineUnknown 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 C…

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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 OF THE VEHICLE AND WE THE CUSTOMERS HAS TO PAY TO REPAIR THESE ISSUE THAT OCCUR ON 60% IF NOT MORE OF THESE CARS ...

NHTSA ODI #11088512

98,345 miles · Jul 7, 2014
Electrical SystemEnginePower Train

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 CU…

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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!! I PROCEEDED TO RESTART THE CAR,AND IT STARTED, WITH NO FAULT MESSAGES;NO SERVICE ENGINE LIGHT; AND DROVE FINE FOR A FEW DAYS,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, THAT THE MECHANICS COULD NOT FIND THE REAL CAUSE OF THE ISSUE. SO,I HAD THE SHOP REPLACE MY SPARK PLUGS; IGNITION COIL; AND RESET THE COMPUTER CODES. THE CAR DROVE OKAY FOR ABOUT A MONTH,AND THEN DID THE SAME THING AGAIN!! I DON'T KNOW WHAT TO DO,THIS PROBLEM COULD CAUSE ME TO END UP IN A SERIOUS ACCIDENT,I AM AFRAID TO DRIVE THE CAR!! AS OF 07/06/2014, MY BMW 645 IS OFTEN SHOWING FALSE; LOW OIL MESSAGE; INCREASE EMISSION; TRANSMISSION MALFUNCTION; AND CLEAR AFTER TURNING CAR OFF, AND RESTARTING THE CAR!! I AM SO CONFUSED ABOUT THIS BMW 645!! *JS

NHTSA ODI #10608586

950,000 miles · Jun 17, 2014
Engine

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. …

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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. *TR

NHTSA ODI #10598735

Official recalls

0

No recalls in this snapshot.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.