There are 1 stored owner reports matching the powertrain & transmission leading-label group for the 2018 BMW X3 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)Vehicle: 2018 BMW X3 VIN: [XXX] My 2018 BMW X3 has had continuous oil and coolant leaks for several years. Major parts have already been replaced including the turbocharger, oil cooler, water pump, turbo lines, radiator hose, thermostat, and valve cover gaskets. The dealer recently confirmed my crankshaft seals are leaking. These issues are consistent with a defective Positive Crankcase Ventilation (PCV) system, which causes excess crankcase pressure and oil leaks. BMW issued an Extended Limited Warranty for PCV/valve cover defects on other models but said my VIN isn’t included—even though I’m experiencing the same failure pattern. This creates potential fire and safety hazards from oil leaking onto hot engine components, as well as the risk of sudden engine failure and environmental hazards from oil dripping onto roads. I respectfully request that NHTSA investigate whether 2018 BMW X3 vehicles should be included in BMW’s PCV/valve cover recall or extended warranty coverage. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.