2019 BMW X5

The BMW B58 Technical Update (B58TU) engine utilizes a variable-displacement oil pump incorporating internal components manufactured from thermoplastic rather than traditional metal. These plastic internal parts are prone to severe thermal degradation and brittleness over time. Under normal operating conditions—and particularly during cold-starts in low ambient temperatures—the plastic elements suffer structural fatigue and catastrophically fracture, destroying the pump's ability to maintain oil pressure. A primary indicator of failure is the vehicle's inability to complete an electronic oil level measurement, quickly followed by a critical "Low Oil Pressure: Stop Engine" warning. This defect poses an immediate and severe hazard to motor vehicle safety. A sudden loss of engine oil pressure while traveling at highway speeds results in immediate oil starvation and catastrophic engine seizure. This causes a sudden loss of motive power and can lead to a loss of power-assisted steering and braking. Operating a vehicle that suddenly stalls or seizes in fast-moving traffic creates an extreme risk of high-speed rear-end collisions and leaves occupants stranded in highly hazardous highway conditions. Because BMW quietly transitioned back to a ruggedized metal oil pump design in later production runs without issuing a safety recall or notice for earlier models, thousands of vehicles remain on the road with an inherently defective, safety-critical engine component. I request that the National Highway Traffic Safety Administration (NHTSA) open a formal safety defect investigation into this component to mandate a safety recall and protect the public.

I was shocked by the failure of the oil pump on my 2019 BMW X5. Furthermore, through my research and discussions within the BMW community, it is evident that this specific oil pump associated with 2019 engine component has a documented history of premature failure and known defects (plastic). Given that this is a known vulnerability rather than standard wear-and-tear, I do not believe that I should bear the full burden of such an exorbitant repair cost of $6890. Why is issue has not been recalled by BMW??

I always service and baby my vehicle. Had recently got starter recall & fresh oil change done 2 months at my local BMW Atlantic City NJ dealership. On June 27th, as I was driving the vehicle normally a message popped on the dash stating engine oil is at a minimum level, add 1 liter of engine oil, refill oil immediately. So I went to my earliest autozone bought quart of mobile 1 oil and refilled it. After that the warning message went away and came felt fine. Unfortunately the next day same message popped up, so drove over to BMW service to get diagnosed. Due to the computer system in the vehicle not being able to read the oil level measurement. It would go from 0-18% oil level reading then message would pop up saying unable to read to try again or make sure vehicle is on ground level which I made sure it was. So next day I dropped it off at BMW dealership for diagnosing. After 1 day and half they came to the conclusion that it is a bad oil pump and wants to charge $6,362.31 for repairs. Advisor stated its due to older gen bmw b58 engines using plastic oil pumps inside which causes to break and cause leaks. So they are aware its an common issue but won’t do an recall or service bulletin to fix issue which is very dangerous because the engine could seize up and stall anytime I’m driving around due to not knowing the oil level measurements. It is super risky and unfair for consumers to pay for such a big bill repair. I hope there is recalls or something to help remedy this cause for current & future BMW affected vehicles. BMW is aware of this issue but won’t resolve it.

The engine oil pump failed internally. The vehicle is equipped with a factory-installed variable-displacement oil pump that utilizes an internal thermoplastic adjusting ring. Due to heat cycles and mechanical stress, this plastic component degrades, becomes brittle, and catastrophically shatters or cracks.The first symptom appeared when the vehicle became entirely unable to complete an electronic engine oil level measurement via the iDrive system, consistently freezing and aborting the test at approximately 15% to 20%. This defect directly compromises road safety. A sudden drop in oil pressure causes severe internal engine friction, leading to immediate engine seizure or a total loss of motive power without adequate warning. Experiencing a sudden engine stall while driving at highway speeds places the driver, passengers, and surrounding motorists at extreme risk of a high-speed rear-end collision. Furthermore, a total engine shutdown disables power-assist steering and braking, making the vehicle incredibly difficult to control and maneuver to safety. Catastrophic mechanical failure from oil starvation also presents a severe under-hood fire hazard if oil leaks onto hot exhaust components.The problem has been officially reproduced and confirmed. The vehicle was brought to Bavarian Werkstatte, where certified technicians diagnosed the issue as an internal structural failure of the variable-displacement oil pump's plastic adjusting ring. The component is currently available for inspection upon request. BMW is fully aware of this defective design. They updated this exact component in mid-2020 to an all-metal oil pump to prevent plastic fragmentation. Despite knowing that the 2019 thermoplastic rings degrade, become brittle, and shatter under normal operating heat cycles, the manufacturer has failed to issue a safety recall in the United States, leaving drivers exposed to dangerous sudden engine failure.

I am writing regarding my BMW X5 xDrive40i, model year 2019, engine code B58TU. The vehicle has been serviced at authorized BMW dealerships. For this engine type B58TU especially years 2018-2021, repeated oil pump failures have been reported due to a known design issue: an internal plastic component can develop cracks, potentially leading to a complete oil pump failure. BMW silently replaced the oil pump with the updated version by keeping the same part number but featuring metal internals. Once there is a fail on the oil pumps with plastic components, engine loses access to get the oil an immediate stop is needed. This creates a huge safety concern cause: 1) If you are on a highway at highway speeds it might not be possible to move to the shoulder safely with no engine power or even worse: with a locked engine. 2) If there is a maintenance on the road with no shoulder access or if this is a bridge where there is no shoulder, it creates a huge risk to safely move the vehicle. An unavoidable sudden stop can create a huge accident risk for everybody. Of course any car can get a engine problem on those occasions but this is a very known and very common problem for BMW cars equipped with B58TU engine especially years 2018-2021. BMW is also definitely aware of that and this safety concern cause they updated the design silently. But, when contacted with BMW NA, they refused to help, refused to admit there is a design problem. They also refused to change the oil pump with the updated oil pump even with my proposal of goodwill pricing.

I am reporting a safety concern involving BMW vehicles equipped with the B58 Technical Update (B58TU) engine, commonly found in model years 2019–2021. These vehicles utilize a variable-displacement engine oil pump containing an internal thermoplastic adjusting component responsible for regulating oil pressure. Field failures are increasingly being reported in which this internal component fractures, resulting in sudden loss or instability of engine oil pressure. The failure frequently occurs during cold-start operation in low ambient temperatures. When the component fails, oil pressure regulation becomes erratic or is lost entirely. In many cases, drivers receive little or no actionable warning prior to engine damage or vehicle disablement. Reported precursor symptoms include inability to electronically measure engine oil level, abnormal oil pressure behavior, or sudden drivetrain malfunction warnings. Failures may rapidly progress to engine shutdown or severe mechanical damage caused by oil starvation. Loss of lubrication can cause the vehicle to become disabled without warning while driving or shortly after startup. This creates a safety hazard, particularly when vehicles become immobilized in active traffic or during winter conditions the cold is when they fail the most, where occupants may be exposed to freezing temperatures while awaiting assistance. Replacement of the oil pump requires extensive disassembly of the vehicle and repairs commonly exceed $6,000–$8,000 for just the pump, assuming the motor is unharmed. Owners are currently unable to determine whether their vehicles contain the original thermoplastic oil pump design or a later revised version utilizing metal internal components, as VIN-based parts information now identifies updated components in the car even when no replacement has occurred and the old components are actually in the car. Also, BMW has actively removed the plastic part number out of all dealer networks as well.

I am reporting a safety concern involving BMW vehicles equipped with the B58 Technical Update (B58TU) engine, commonly found in model years 2019–2021. These vehicles utilize a variable-displacement engine oil pump containing an internal thermoplastic adjusting component responsible for regulating oil pressure. Field failures are increasingly being reported in which this internal component fractures, resulting in sudden loss or instability of engine oil pressure. The failure frequently occurs during cold-start operation in low ambient temperatures. When the component fails, oil pressure regulation becomes erratic or is lost entirely. In many cases, drivers receive little or no actionable warning prior to engine damage or vehicle disablement. Reported precursor symptoms include inability to electronically measure engine oil level, abnormal oil pressure behavior, or sudden drivetrain malfunction warnings. Failures may rapidly progress to engine shutdown or severe mechanical damage caused by oil starvation. Loss of lubrication can cause the vehicle to become disabled without warning while driving or shortly after startup. This creates a safety hazard, particularly when vehicles become immobilized in active traffic or during winter conditions the cold is when they fail the most, where occupants may be exposed to freezing temperatures while awaiting assistance. Replacement of the oil pump requires extensive disassembly of the vehicle and repairs commonly exceed $6,000–$8,000 for just the pump, assuming the motor is unharmed. Failures have been reported across multiple production years, and affected vehicle population boundaries remain unclear. Because this condition can result in sudden vehicle disablement without adequate warning especially in the cold, I believe this issue warrants investigation as a potential safety-related defect.

I am reporting a safety concern involving a 2019 BMW X5 that experienced a sudden and catastrophic engine failure at approximately 75,000–80,000 miles. The failure occurred without any prior warning indicators, dashboard alerts, or fault codes. The vehicle lost engine function and required inspection by an authorized BMW dealership. The dealership documented internal engine damage, including metallic debris in the oil system, oil contamination, and bottom-end engine knocking. A full engine replacement was recommended. This raises safety concerns because: The failure occurred without warning Sudden engine failure could create hazardous driving conditions depending on speed and location There may be a broader pattern of similar failures BMW of North America has denied assistance and has not provided any explanation for the cause of the failure. I am submitting this complaint so the incident can be recorded and evaluated as part of any potential defect investigation.