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Engine
01/20/2026
I am writing to formally report a potential safety-related defect involving BMW vehicles equipped with the B58TU engine, primarily affecting model years 2019 through 2021. My vehicle experienced a sudden loss of engine oil pressure that resulted in catastrophic engine failure. This condition occurred with little to no warning and led to immediate vehicle disablement. The failure created a hazardous situation, as the vehicle was no longer able to maintain propulsion and could have placed occupants at risk because it occurred in active traffic or unsafe conditions. Based on my experience and additional research, the issue appears to originate from the engine’s oil pump design. Specifically, the oil pump contains an internal pressure-regulating component originally manufactured from plastic. This component is prone to fracturing, particularly during cold starts or low ambient temperatures. When this failure occurs, oil pressure becomes erratic or is lost entirely, often without sufficient...
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Electrical System, unknown Or Other, service Brakes
02/06/2025
NHTSA COMPLAINT (VERY IMPORTANT – SAFETY FOCUSED) Subject: Safety Complaint – BMW X7 Electrical Defect and Fire Risk (VIN: [XXX] ) To the National Highway Traffic Safety Administration, I am submitting a formal safety complaint regarding a 2020 BMW X7 xDrive40i affected by Recall No. 24V-576 (Engine Starter Defect). My vehicle has experienced: •Sudden battery failure •Electrical system malfunction •Starter-related issues consistent with recall description BMW’s recall states that the defect can cause: •Electrical overload •Starter overheating •Increased risk of engine compartment fire This is not a theoretical issue—I have already experienced a complete system failure requiring towing and major repair, placing my family and me at risk. Serious Concerns •The defect appears systemic and dangerous •The remedy (software update) does not appear sufficient •The failure occurred without adequate warning Request for Investigation I urge NHTSA to: 1.Investigate the effectiveness of BMW’s recall...
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Engine
04/06/2026
I'm reporting a safety issue with BMW vehicles equipped with the B58TU engine, primarily 2019-2021 models. These vehicles have an oil pump with an internal plastic component that regulates oil pressure, and this part is fracturing in the field, causing sudden loss of oil pressure. The failure typically occurs during cold starts in low temperatures. When it fails, oil pressure becomes erratic or is lost entirely, often with little to no warning before engine damage or vehicle disablement. Warning signs, when present, include inability to measure oil level electronically, abnormal oil pressure, or sudden drivetrain malfunction warnings. These can rapidly progress to engine shutdown or severe damage from oil starvation. This creates a dangerous situation because the vehicle can become disabled without warning while driving or after startup. This is especially hazardous when cars become immobilized in traffic or during winter conditions when failures occur most frequently, leaving occupant...
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Power Train
11/20/2024
The transfer case on my 2020 BMW X7 failed and had to be replaced. Turning the vehicle became unstable as the vehicle shuttered badly. BMW confirmed the shuttering and first changed the transfer case fluid. However, it only slightly helped at first but the shuttering came fully back shortly thereafter. The vehicle was inspected by BMW twice. I don’t remember any warning lights on the dash. The shuttering first occurred in 2024.
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Engine
02/01/2026
Oil pum with plastic internals. Repeat hot and cold cycles cause premature failure of the plastic components and cause loss of oil pressure along with the pump grenading itself.