BMW M550i Complaints

29 consumer complaints on file.

#11763306September 10, 2026
ENGINE
On most modern BMW models (with Hot V V8 engines like the N/S 63) the coolant tank that is supposed to last at least the lifetime of the vehicle, only lasts about 40,000 Miles before cracking. The main issue is that the tank sits over the engine, which when coolant leaks, it will leak into the injectors causing engine misfires. There is no warning to the issue until you have a low coolant, but at that point, the coolant has already dripped into your engine. Not only this but anti freeze can cause corrosion to metal, plastic and all the wiring. This can lead from a $400 tank to a 4 figure engine repair with no early warning signs until too late. Also environmentally, dripping antifreeze everywhere is not good…
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755556August 7, 2026
ENGINE
Throughout my ownership, I have adhered to BMW’s recommended maintenance schedule, including routine oil changes and inspections. At no point was I advised of any engine issues, oil leaks, or conditions that could potentially lead to catastrophic engine failure. Most recently, the vehicle had change oil svc. at BMW of White Plains on June 25, 2026, at 69,456 miles. On July 17, 2026, while driving on the Bronx River Parkway, I unexpectedly noticed signs indicating that the vehicle was leaking oil. I was approximately three miles from BMW of White Plains and proceeded directly to the dealership. Before reaching the dealership, the engine lost power and ultimately failed. A few days later, I was informed by my BMW Service Advisor that the engine had sustained catastrophic internal damage and would require the replacement of the short block. The estimated repair cost exceeds $50,000. After six years of ownership, approximately 50,000 miles driven, and consistent maintenance performed by authorized BMW service centers, I find it extremely concerning that the engine could experience such a sudden, catastrophic failure without any prior warning or documented indication of an oil leak or impending engine issues. Most importantly, I believe this incident posed a significant safety hazard. The engine lost power while I was driving on a busy parkway, causing my vehicle to slow down and stall in traffic. Additionally, the active oil leak raised concerns about the potential risk of fire. A sudden loss of propulsion on a high-speed roadway put both myself and surrounding motorists at considerable risk.I respectfully request that the National Highway Traffic Safety Administration investigate whether this type of failure indicates a broader safety issue involving the N63 engine or related components. If similar incidents have occurred, I believe owners should be informed so they can take appropriate precautions before experiencing a potentially dangerous loss of power.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11711486January 16, 2026
STEERING, LANE DEPARTURE: ASSIST, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
To: National Highway Traffic Safety Administration (NHTSA) Subject: Safety Complaint – 2018 BMW M550i Driver Assistance System I am filing a formal safety complaint regarding a dangerous malfunction of the driver assistance systems in my 2018 BMW M550i. These systems behave unpredictably and cannot be reliably disabled, creating an unsafe driving condition. The vehicle’s driver assistance features (including steering and braking interventions) activate or restrict themselves unexpectedly while driving, sometimes without clear warnings. At other times, the system disables itself mid-drive. Despite repeated attempts, these features cannot be fully turned off, leaving me forced to rely on a computer system that makes erratic decisions affecting vehicle control. BMW dealerships acknowledge the issue but state no permanent fix exists unless I pay out of pocket. BMW corporate has declined goodwill repairs and claims the behavior is “normal,” despite the clear safety implications. I believe I should not be required to pay to correct a defect that impacts safe operation of the vehicle. This issue is especially concerning given prior BMW recalls involving driver assistance and steering sensor systems. An unpredictable or uncontrollable ADAS system undermines driver authority and increases crash risk. I am requesting that NHTSA investigate this issue to determine whether it represents a broader safety defect and require BMW to provide a full repair at no cost. If the defect cannot be reliably repaired, I believe a buyback or vehicle replacement should be considered. This vehicle does not operate in a consistently safe manner, and I fear continued use places me and others at risk. Thank you for your attention to this serious safety concern.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11680940August 15, 2025
AIR BAGS, SEAT BELTS
I’m getting a passenger restraint system malfunction message on my infotainment. Says: “Passenger restraint system limited. Increased risk of injury in case of a collision. Continue wearing safety belt.” This is the second time this has occurred on this specific vehicle. First time was in 2021 and was repaired. Now it came up again.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11655700April 20, 2025
AIR BAGS
Passenger restrain system mail function
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11644667February 24, 2025
POWER TRAIN, UNKNOWN OR OTHER
The front differential and rear drive train has been problematic and has failed in model years starting 2019. My car is a April 2020 car with 34,000 miles and has already failed. There are numerous cars that share the same V8 engine and drive train, has similar front differential failures at very low mileage. BMW USA seems to not car and address the issue after it being brought to their attention.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11624298November 8, 2024
POWER TRAIN
The guibo (flex disc) in the powertrain has multiple visible cracks, posing a safety risk due to its potential to disrupt power transmission to the wheels. This malfunction could impact vehicle control, particularly at higher speeds, thus putting passengers and other road users at risk. A certified BMW service center has confirmed the problem, with BMW technicians recommending a replacement; however, both the dealer and BMW have declined to cover it under warranty. Although there were no warning lamps prior to the failure, slight vibrations or noises may have indicated an issue with the guibo. The attached image is the recommendation from the BMW service center however I declined to it repaired out of pocket.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11621999October 25, 2024
AIR BAGS
Passenger restrained seatbelt signal. There is bulletin in google: SIB 72 04 17. There are recalls for this vehicle but dealer want accept it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11621119October 21, 2024
TIRES:SIDEWALL
In the last 8 months, I have experienced 3 blowouts on the same side of the car. The tires were Continental Procontact SSR 245/40R19. In each instance, the sidewall failed and blew out. This has occurred on the highway as well as at low city speeds.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11610156August 22, 2024
ELECTRICAL SYSTEM, LANE DEPARTURE: BLIND SPOT DETECTION, LANE DEPARTURE: ASSIST
Excessive amounts of water accumulated at interior floors from the A/C drain unit. Water damage to all sensors and bad odor. Worried car may catch fire while driving. A/C will sometimes work.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11606073August 2, 2024
WHEELS
I have had two separate incidents of cracked wheels. I drive the vehicle on normal roadways and have had no impacts with curbs, debris or significant road hazards. The wheels show no signs of any impact or damage, just a crack. Of course the cracked wheels result in a rapid loss of tire pressure. BMW will not warranty the wheels and replacement of each has cost me $800. I feel the wheels were obviously not engineered properly to withstand the load and forces of normal highway driving. The First cracked wheel was in November of 2023 - right front. The most recent was August 2024, left rear. The vehicle had approx 30,000 miles at the first incident and most recently 38,000 miles for the second incident.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11605824August 1, 2024
STRUCTURE:BODY
The rear driver door will not open. It seems the door handle does not open the door from the exterior of the vehicle. The door will also not open from the interior of the vehicle. It feels like the handle has come lose from the door latch mechanism to open the door of the vehicle. This is a big safety concern if there is a passenger sitting behind the driver and they cannot exit the vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11605826August 1, 2024
LATCHES/LOCKS/LINKAGES:DOORS:LATCH
The rear driver door does not open from the outside or inside of the vehicle. I had someone sitting behind the driver and they could not exit the vehicle, we had to assist so they can exit out the other side (passenger rear door). The handle on the outside of the car seems like if it is not connected to the door mechanism. This is a huge safety issue. I also took the car to the dealer to have the door covered under my extended warranty and they did not cover it under warranty.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11597615June 29, 2024
SEATS, SEAT BELTS, AIR BAGS
Vehicle reported a Passenger Restraint Failure intermittently and upon getting diagnosed is related to a faulty seat occupancy sensor. If this sensor can fail ~4yrs of ownership with < 30k miles driven and it is critical to passenger restraint, it would seem that this should be fixed by BMW. With quick search, the problem doesn't seem isolated: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11591343May 29, 2024
AIR BAGS, SEAT BELTS, SEATS
Passenger restraint system malfunction. I took it to the dealership and was told it will cost $3785.91 to replace the passenger seat mat. Looking online, this problem appears to be widespread with many individual car owners complaining of the issue. Given that this is a life safety system and its apparent prevalence, it seems appropriate to consider this for a mandatory recall.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11586141April 30, 2024
SEATS, SEAT BELTS, AIR BAGS
The passenger seat occupancy mat is faulty - same as in many other BMW models for which BMW has issued a 15 year warranty. The car chimes and states "fasten safety belt" for the passenger seat when the passenger seat is entirely empty. This error comes and goes, and stops when the belt is buckled.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11585838April 29, 2024
STRUCTURE:BODY, UNKNOWN OR OTHER
The car was purchased new in July 2023. On or about [XXX], while the car was parked the front license plate holder separated suddenly and unexpectedly from the front bumper of the car and fell to the ground. Incidental to the failure of the front license plate holder, the separation of the holder caused damage to the front bumper. There was no external force applied to the front license plate holder, and the vehicle was not involved in a collision. Because the car was stationary at the time of the incident, there was no additional damage; the safety of the passengers, other drivers, or pedestrians was not compromised. However, had the car been moving, a sudden and unexpected event of the separation of the front license plate holder would have posed serious safety risks. I contacted the selling dealer, BMW of Sudbury, located in Sudbury, MA to discuss the issue related to the damages resulting from the failure of the front license plate holder. I spoke with Michael K. Walsh, General Sales Manager at BMW of Sudbury, 508-903-5300, [email protected], about the issue of sudden and unexpected failure of the front license plate holder. According to Mr. Walsh, the front license plate holders have been failing on a regular basis, with several instances of failure occurring every year at the BMW of Sudbury dealership. Mr. Walsh mentioned that the failures typically occur within several days to several weeks after the installation of the front license plate holder. In addition, Mr. Walsh indicated that license plate holders and the hardware for their installation are manufactured by BMW. The dealer has never notified the manufacturer about the potential safety risks associated with the sudden and unexpected separation of the front license plate holder from the car. This inaction on the dealer part has persisted even though it has been fully aware of the recurrent failures of the front license plate holders. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11550749October 19, 2023
AIR BAGS, AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION
The passenger restraint malfunction continues to alarm and the dealership states that it is a seat-pad sensor and want over $2000.00 to replace. From a number of BMW forums, it appears that this was a common problem with earlier models and a subsequent 15-year warranty extension was granted because of the safety concerns. My car is well cared for and has very few miles on it, so I truly believe that BMW needs to either recall this faulty SAFETY component or replace it free of charge. Please protect me and my family by holding BMW accountable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11543378September 8, 2023
AIR BAGS, SEAT BELTS
Passenger Restraint Warning Light has been coming on off and on and now stays on all the time. Dealer has confirmed car needs to have the OC3 mat replaced at a very high price. Car is a 2018 BMW M550ix. Apparently this has been a common problem with the BMWs.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11540031August 22, 2023
AIR BAGS, SEAT BELTS, ELECTRICAL SYSTEM
Passenger side sensor is faulty. BMW has issued Technical Service Bulletin to repair when found in warranty. The sensor will errantly warn airbag disable when person is not in seat.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to BMW M550i