One problem related to crankcase (pcv) has been reported for the 2015 BMW X3. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 BMW X3 based on all problems reported for the 2015 X3.
When driving for more than 10 minutes I am noticing smoke coming from the near the engine compartment and strong smell of burning plastic. It smells and appears as if something will catch on fire if I don’t shut off the vehicle. A similar issue was previously reported for older models, which had led to a recall. In that recall the problem stemmed from a manufacturing defect involving the pcv valve heater, which helps recirculate waste gases within the engine. The heater could short-circuit, overheat, and catch fire. This defect is now effecting my own vehicle, which is a 2015 BMW X3.