One problem related to front air bag has been reported for the 1999 Volvo S70. The most recently reported issues are listed below.
Head on collision with another vehicle. No airbags deployed, owner struck windshield with head, broke windshield and injured neck. My vehicle was totalled, and the repair shop said something failed w. R. T the airbags. They should have deployed. Volvo has inspected the vehicle, but no results yet regarding their findings.