I HAD AN ACCIDENT IN MY AUDI A4 CONVERTIBLE AND THE DRIVER AIRBAG DID NOT DEPLOY. DUE TO SUN GLARE, I REAR-ENDED A MERCURY MOUNTAINEER WITH MY 2006 AUDI A4 CONVERTIBLE. I NEVER SAW HIS TAILLIGHTS, I WAS NOT MESSING WITH THE RADIO OR TALKING ON THE CELL PHONE. I WAS NOT CITED, ALTHOUGH THE ACCIDENT WAS CLEARLY MY FAULT. I WAS THE ONLY ONE IN THE CAR. I WAS WEARING MY SEATBELT AND SHOULDER HARNESS IN THE CORRECT FASHION. MY INJURIES WERE MINOR BRUISING AND A RUB MARK ON MY NECK FROM THE SHOULDER HARNESS. THE ACCIDENT WAS A DIRECT HIT, PRACTICALLY STRAIGHT ON. THE RADIATOR WAS PUSHED INTO THE ENGINE. THE PASSENGER AIRBAG DEPLOYED. THE DRIVER AIRBAG DID NOT. THE REST OF THE AUDI SAFETY FEATURES WORKED - THE REAR SEAT ROLLOVER PROTECTION DEPLOYED. THE EMERGENCY FLASHERS CAME ON. THE ENGINE TURNED ITSELF OFF. MY QUESTION IS WHY DIDN'T THE DRIVER AIRBAG GO OFF??? IT WAS A DIRECT HIT. THERE WAS NO ONE IN THE PASSENGER SEAT, YET THAT AIRBAG WENT OFF. *TR