{"source":"NHTSA vehicle owner complaint","officialApiUrl":"https://api.nhtsa.gov/complaints/odinumber?odinumber=11721121","retrievedAt":"2026-11-05T05:22:06.290Z","count":1,"results":[{"odiNumber":11721121,"manufacturer":"BMW of North America, LLC","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"02/12/2026","dateComplaintFiled":"02/28/2026","vin":"5UXCR6C0XL9","components":"ENGINE","summary":"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","products":[{"type":"Vehicle","productYear":"2020","productMake":"BMW","productModel":"X5","manufacturer":"BMW of North America, LLC"}]}]}