The 2007 BMW 330i has 3 recalls, the most serious being driver's airbag inflators that can explode during deployment, sending sharp metal fragments into the cabin and posing a risk of serious injury or death.
Two separate scenarios cover this airbag danger. The first involves the original driver's airbag inflator, which can rupture violently when the airbag fires. The second applies to vehicles where the original steering wheel was swapped for a sport or M-sport steering wheel: the replacement inflator carries the same explosion risk. Both present the same outcome for anyone in the driver's seat or nearby.
The third recall concerns the wiring and electrical connectors that control airflow through the heating and air conditioning system. That wiring can overheat, causing the connectors to melt, and the heat generated can start a fire even when the car is parked and unattended.