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2018 Bmw X3 Transmission Problems

1 owner-reported transmission complaint from NHTSA data

1
Complaints
Oct 2025Oct 2025
Date Range

Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.

Owner Complaints (1)

highPOWER TRAIN,ENGINE
Filed: Oct 2025

Your 2018 BMW X3 has experienced multiple oil and coolant leaks over several years, requiring replacement of the turbocharger, oil cooler, water pump, turbo lines, radiator hose, thermostat, and valve cover gaskets. The dealer recently confirmed your crankshaft seals are also leaking, which you believe is caused by a faulty Positive Crankcase Ventilation (PCV) system creating excess pressure in the engine. Oil leaking onto hot engine parts poses fire and safety risks, and oil dripping onto roads creates environmental hazards. The repair will likely involve diagnosing and repairing or replacing the PCV system components and any damaged seals or gaskets.

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NHTSA #: 11692532

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