The 2006 BMW 328i has 3 recalls, the most serious being two separate airbag inflator defects where the driver's frontal airbag can explode during deployment and send sharp metal fragments into the cabin, risking serious injury or death.
Both airbag concerns involve the driver-side inflator. The first affects vehicles with their original steering wheel, where the inflator can rupture rather than deploy normally. The second applies to vehicles where the original steering wheel was replaced with a sport or M-sport steering wheel carrying a similarly defective inflator. In either case, a crash that triggers airbag deployment can turn the inflator housing into a source of metal fragments directed at the driver and anyone nearby. There is also a fire risk unrelated to the airbags: the wiring and electrical connectors that control airflow for the heating and air conditioning system can overheat, melt the connectors, and start a fire even while the car is parked and unattended.