NHTSA Complaint #11701313 — 2013 BMW X5

Component or system that failed/malfunctioned N63 4.4L twin-turbo V8 engine – excessive oil consumption (1 quart every 300–400 miles) caused by failed valve-stem seals and leaking turbocharger coolant feed/return lines. Parts are still on the vehicle and available for inspection. How was your safety or the safety of others put at risk? Sudden loss of engine oil can lead to catastrophic engine failure, bearing damage, or fire. Leaking coolant onto hot turbochargers creates risk and sudden coolant loss/overheating while driving. Has the problem been reproduced or confirmed by a dealer/independent service center? Yes – confirmed by Paul Miller BMW Wayne, NJ on June 30, 2025 (invoice #524818). Codes: EN79 (engine oil leak diagnosis), CS001 (turbo coolant lines leaking), DE001 (changeover valve cracked/coolant leak). Dealer quoted $12,487 to repair. Has the vehicle or component been inspected by the manufacturer, police, insurance, or others? Inspected by Paul Miller BMW (authorized BMW dealer) on June 30, 2025. No police or insurance involvement. Warning lamps, messages, or other symptoms prior to the failure? Low engine oil warning lamp repeatedly illuminates Visible coolant "steam" around hood and under vehicle after parking. Strong coolant smell from engine bay. Symptoms began approximately 18-24 months ago and have steadily worsened. Additional notes (optional but helpful) Called BMW corporate, refused (said no information) to perform known Customer Care Package B001314 (March 2025 supersession) despite documented symptoms and no mileage limitation in the bulletin. Vehicle is available for immediate NHTSA or BMW inspection.