The 2006 BMW 325xi has 5 recalls, the most serious being two separate fire risks and a Takata-related driver's airbag inflator that can explode and send metal fragments into the cabin.
The two fire risks involve the HVAC wiring and the positive crankcase ventilation valve heater, both of which can overheat and ignite even when the vehicle is parked and unattended. The airbag concern covers two related issues: the driver's airbag inflator can rupture violently during deployment, and on vehicles where the original steering wheel was replaced with a sport or M-sport wheel, the replacement inflator carries the same explosion risk. Prior repair attempts did not fully resolve the inflator issue across all affected vehicles. There is also a concern with the passenger seat sensor on vehicles equipped with the Sport Seat option: if the sensor fails, the front passenger airbag can be disabled in a crash, leaving that occupant without airbag protection.