2020 BMW X5 Engine Problems

Safety Hazard: Oil Pump Failure Leading to Sudden Engine Stall (BMW B58TU engines) Description of Defect: The oil pump module in the 2020 BMW X5 (G05) contains internal plastic components that are prone to thermal degradation and premature failure. These plastic parts can crack or disintegrate, causing a sudden loss of oil pressure. Safety Risk: A failure of the oil pump leads to insufficient lubrication of critical engine components, which can result in a sudden and complete engine seizure while the vehicle is in motion. This causes an immediate loss of propulsion and power steering assist, significantly increasing the risk of a high-speed collision or being stranded in dangerous traffic conditions. Additional Note: This is a known mechanical defect where a critical engine component (oil pump) relies on non-durable plastic materials, creating an unreasonable safety risk for drivers and passengers due to potential catastrophic engine failure without prior warning.

Safety Hazard: Oil Pump Failure Leading to Sudden Engine Stall (BMW G05 X5) Description of Defect: The oil pump module in the 2020 BMW X5 (G05) contains internal plastic components that are prone to thermal degradation and premature failure. These plastic parts can crack or disintegrate, causing a sudden loss of oil pressure. Safety Risk: A failure of the oil pump leads to insufficient lubrication of critical engine components, which can result in a sudden and complete engine seizure while the vehicle is in motion. This causes an immediate loss of propulsion and power steering assist, significantly increasing the risk of a high-speed collision or being stranded in dangerous traffic conditions. Additional Note: This is a known mechanical defect where a critical engine component (oil pump) relies on non-durable plastic materials, creating an unreasonable safety risk for drivers and passengers due to potential catastrophic engine failure without prior warning.

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. Failures have be

I'm reporting a safety issue with BMW vehicles equipped with the B58TU engine (primarily 2019–2021 models). These vehicles use an oil pump containing an internal plastic component that regulates oil pressure. This plastic part is fracturing in the field, leading to sudden loss or instability of oil pressure. Failures commonly occur during cold starts in low temperatures. When the component 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 behavior, or sudden drivetrain malfunction warnings. These can quickly progress to engine shutdown or severe engine damage due to oil starvation. My vehicle is currently experiencing all of the described oil pump-related symptoms, including inconsistent electronic oil level readings and drivetrain malfunction warnings consistent with oil pressure instability. This condition creates a serious safety risk. The vehicle can become disabled without warning while driving or shortly after startup. Oil starvation can lead to catastrophic engine failure, especially at highway speeds, where sudden engine shutdown or seizure increases the risk of a crash. Failures are particularly dangerous in winter conditions, when vehicles may become immobilized in traffic or freezing temperatures. Replacement of the pump requires major disassembly and typically costs $6,000–$8,000, assuming no engine damage. Owners cannot determine whether their vehicle has the original plastic component or a revised metal version. BMW’s VIN-based parts lookup now shows only updated components even when original plastic parts remain installed, and the original plastic part number has been removed from dealer systems. Because this defect can cause sudden vehicle disablement and potential catastrophic engine failure without adequate warning.

I am submitting this correspondence as a formal notification of a potential safety-related defect affecting BMW vehicles equipped with the B58 Technical Update (B58TU) engine platform, most commonly model years 2019–2021. The purpose of this communication is to request immediate review under BMW’s vehicle safety defect evaluation process due to an increasing number of oil pump failures capable of causing sudden loss of engine lubrication, unexpected vehicle disablement, and occupant exposure to hazardous conditions. The original B58 engine (B58B30M0, 2015–2017) utilized a conventional mechanically robust gerotor oil pump with predominantly metallic internal construction and demonstrated strong reliability in field operation. This component, constructed from reinforced thermoplastics including PA66-GF materials, operates within a chemically aggressive and thermally cyclic environment involving continuous exposure to engine oil additives, fuel dilution, condensation, and repeated heat cycling. While acceptable under accelerated validation testing, real-world operating conditions increasingly demonstrate premature degradation consistent with polymer embrittlement and fracture. Documented owner and technician reports indicate that under cold-start conditions — particularly in sub-freezing climates — elevated oil viscosity and startup load impose increased mechanical stress on the thermoplastic carrier. Fracture of this internal component allows debris intrusion into the pump mechanism, resulting in unstable oil pressure regulation. Commonly reported precursor symptoms include: • Inability to perform electronic oil level measurement via iDrive • Erratic or oscillating oil pressure behavior • Intermittent lubrication warnings or absence of warning prior to failure • Rapid progression to bearing damage and engine seizure Given the potential for sudden vehicle disablement without adequate warning, I respectfully request BMW of North America initiate a formal inquiry

Was driving at normal interstate speed when I received a warning on my dashboard to pull over and turn off engine —- low engine pressure, immediately. Call a tow. I immediately pulled over, turned off my car and contacted a tow. My vehicle was towed to the BMW dealership. I received an update that my oil pump failed. It’s almost $6k to replace and then stated not sure if that’ll truly fix the problem and to change the engine $28k. I began to do research and this is a known problem. Many owners have this problem- BMW is aware and began change the plastic part to metal in the subsequent years. I received no warning that it was beginning to fail and it is a safety hazard as I was on the interstate at the time.

The contact owns a 2020 BMW X5. The contact stated while driving approximately 25 MPH, the message "Low Oil Pressure - Stop Vehicle Immediately" was displayed, and the oil warning light was illuminated. The vehicle was pulled over to the side of the road and turned off. The vehicle was towed to a dealer where it was diagnosed and determined that the oil pump was inoperable and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 81,000.

The contact owns a 2020 BMW X5. The contact stated that while stopped at a red traffic light, the vehicle lost power. The contact attempted to restart the vehicle; however, the vehicle failed to respond as intended. A dealer was contacted. The vehicle was towed to dealer where it was diagnosed and determined that the starter needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 24V576000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING). The vehicle was previously repaired; however, the failure persisted. The manufacturer was notified of the failure but offered no assistance. The failure mileage was 48,000.

The contact owns a 2020 BMW X5. The contact stated that after refueling the vehicle, the contact attempted to restart the vehicle; however, the vehicle failed to restart. The contact made several attempts, and after approximately an hour, the vehicle was towed to the residence. The vehicle failed to start and was towed to a local dealer. The contact stated that there were no warning lights illuminated. The dealer diagnosed the vehicle and determined that the starter motor had failed and needed to be replaced. The vehicle was not repaired. The contact researched online and related the failure to NHTSA Campaign Number: 24V576000 (Electrical System, Engine and Engine Cooling). The contact called the manufacturer and asked about the recall for the starter motor and was informed that the VIN was not included in the recall. The failure mileage was approximately 30,000.

The contact owns a 2020 BMW X5. The contact stated that upon entering the vehicle, the message that the engine had overheated, and the vehicle was disabled was displayed. No warning lights were illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the starter motor. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 24V576000 (Electrical System, Engine and Engine Cooling), but the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 80,000.

The contact owns a 2020 BMW X5. The contact stated that while at a complete stop, the START/STOP feature failed to operate as designed, and the engine failed to restart while depressing the accelerator pedal. The contact stated that a "Starting Engine Possibly Shortly: System Overheated. Restarting Engine Possible After Cooling" message was displayed on the instrument panel. After the contact allowed the engine to cool down, the vehicle failed to restart with the same messages displayed. Due to the failure, the vehicle was towed to the dealer where it remained. Upon investigation, the contact discovered NHTSA Campaign Number: 24V576000 (Electrical System, Engine and Engine Cooling); however, the VIN was not included in the recall. The contact also discovered and linked the failure to Technical Service Bulletin: B120424. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 73,000.

The contact owns a 2020 BMW X5. The contact stated that the vehicle failed to start. The contact stated that the message that the vehicle was overheating was displayed. There were no warning lights illuminated. The contact stated that the failure was related to NHTSA Campaign Number: 24V576000 (Electrical System, Engine, and Engine Cooling). The vehicle was towed to the local dealer, where it was diagnosed that the failure was due to the starter. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline. The failure mileage was approximately 35,000.

The contact owns a 2020 BMW X5. The contact stated while driving at approximately 45 MPH, the vehicle stalled. The contact stated that START/STOP warning light was illuminated. The contact attempted to restart the vehicle but was unable. The contact had the vehicle towed to a dealer who diagnosed that the starter motor had failed and needed to be replaced. The vehicle was repaired. The manufacturer was not informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 24V576000 (Electrical System, Engine and Engine Cooling); however, the VIN was not included. The failure mileage was approximately 31,000.

The contact owns a 2020 BMW X5. The contact stated while at a stop light, the gear shifter independently shifted into neutral. The contact stated after several attempts, the gear shifter was shifted into park. The contact stated that the gear shifter had seized in park(P). The vehicle was towed to the dealer where it was diagnosed with internal starter motor shortage. The contact was informed that the starter motor needed to be replaced. The vehicle was not repaired. The contact was informed of NHTSA Campaign Number: 24V576000 (Electrical System, Engine and Engine Cooling); however, the VIN was not included in the recall. Additionally, the contact stated that the failure had occurred at night, while the four minor children were inside the vehicle. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was unknown.

The contact owns a 2020 BMW X5. The contact stated that on several occasions the vehicle failed to immediately start. Additionally, while the vehicle was idling the vehicle shut off and had to be restarted. The vehicle was taken to an independent mechanic who diagnosed that the starter was faulty and needed to be replaced. The vehicle was not yet repaired. The local dealer and manufacturer were informed of the failure, but no assistance was provided. The contact was informed that the VIN was not included in NHTSA Campaign Number: 24V576000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 60,000.

The contact owns a 2020 BMW X5. The contact stated that the vehicle failed to start. The message "System Overheating - Restarting Engine Possible After Cooling" was displayed. The contact called AAA, who attempted to start the vehicle and shift to neutral(N), but the vehicle failed to respond as needed. The vehicle was towed to the residence with a special tow truck. The vehicle was able to be jumpstarted by AAA the following day. The vehicle was then driven to the dealer, where it was parked and turned off. The contact stated that the failure recurred at the dealer. The dealer diagnosed the vehicle and determined that the starter had failed and needed to be replaced. The contact became aware of NHTSA Campaign Number: 24V576000 (Electrical System, Engine and Engine Cooling), which the contact linked to the failure; however, the dealer informed the contact that the VIN was not included in the recall. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was unknown.

Dear NHTSA, I am writing to report an issue with my vehicle, VIN: [XXX] , which appears to be related to a recall program. My dealer, BMW of Sherman Oaks #488, refuses to acknowledge the connection between the starter failure and the recall despite clear indications of this connection. I kindly request your assistance in investigating this matter and ensuring that the dealer complies with the recall requirements and provides the necessary corrective action. Thank you for your prompt attention to this issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2020 BMW X5. The contact stated that while starting the vehicle there was a grinding sound coming from the engine compartment. While driving approximately 45 MPH, the message that the engine was overheating was displayed on the instrument panel. The contact pulled over to the side of the road and turned off the vehicle and waited for the engine to cool down. The vehicle failed to restart after the engine cooled down. The vehicle was towed to the dealer who diagnosed that the starter had failed and needed to be replaced. The dealer informed the contact of NHTSA Campaign Number: 24V576000 (Electrical System, Engine and Engine Cooling); however, the VIN was not included. The vehicle had not been repaired. The manufacturer was made aware of the failure and filed a case for the failure. The manufacturer confirmed that the VIN was not under recall. The failure mileage was 44,000.

The contact owns a 2020 BMW X5. The contact stated while attempting to start the vehicle, the vehicle failed to respond. The contact was able to start the vehicle after the sixth attempt. The vehicle was taken to an independent mechanic to be diagnosed, and the contact was informed that the engine needed to be replaced. The engine was not replaced; however, the battery was replaced. The contact related the failure to NHTSA Campaign Number: 24V576000 (ELECTRICAL SYSTEM, ENGINE AND ENGINE COOLING); however, the VIN was not included in the recall. The manufacturer was notified of the failure but offered no assistance. The failure mileage was 60,500.

Starter malfunction caused engine to shut down in the middle . Message on screen indicated that the engine overheated and shut down was to prevent further damage. Drivetrain messages also appeared indicating that vehicle was ok to drive, but unfortunately wouldn't start/drive. Wouldn't shift to Neutral for towing. BMW dealer inspected vehicle, then replaced batteries and faulty starter. Event happened PRIOR to receiving notice re safety recall campaign no. 24V-576 for the engine starter remedy. Event happened without warning and about a mile from home , causing vehicle to stop in moving traffic on a very busy, 6 lane road. Policy were dispatched to help with traffic control and safety. Vehicle was inspected by and serviced by BMW dealer.