NHTSA complaint #11754552

Owner complaint summary

My 2019 BMW X5 (G05) equipped with the B58 Technical Update (B58TU) engine has experienced a failure / is showing early signs of failure of the engine oil pump assembly.Beginning with the B58TU engine, BMW utilized a variable-displacement oil pump that contains a thermoplastic/plastic internal adjusting ring. This plastic component degrades under normal operating temperatures, resulting in a sudden mechanical failure of the pump. This failure leads to a sudden drop in engine oil pressure, vehicle disablement without sufficient warning, or an inability for the iDrive infotainment system to complete an electronic oil level measurement.A sudden loss of engine lubrication while driving presents a severe safety hazard, capable of immobilizing the vehicle in active traffic. BMW has updated this exact pump part number to utilize all-metal internal carriers on later production runs, but refuses to cover the cost for early out-of-warranty models. I am requesting that the NHTSA open a safety defect investigation into the early B58TU oil pump assembly to force a mandatory safety recall.