TL*THE CONTACT OWNS A 2006 AUDI A4. WHILE DRIVING 35 MPH, THE CONTACT NOTICED SMOKE COMING FROM THE FRONT AND BACK OF THE VEHICLE. SHE PULLED THE VEHICLE OVER AND TURNED OFF THE IGNITION. SHE THEN HEARD A LOUD EXPLOSION UNDERNEATH THE VEHICLE. SHE EXITED AND NOTICED FLAMES UNDERNEATH THE VEHICLE AND FROM UNDER THE HOOD AS WELL. WHEN THE FIRE DEPARTMENT ARRIVED, THE FRONT HALF OF THE VEHICLE WAS COMPLETELY ENGULFED IN FLAMES. THE FIRE WAS EXTINGUISHED, BUT THE FIRE DEPARTMENT WAS UNABLE TO DETERMINE THE CAUSE OF THE FAILURE. A FIRE REPORT WAS FILED. THE CONTACT DID NOT NOTICE ANY FAILURES PRIOR TO THE FIRE. THE VEHICLE WAS INSPECTED BY AN INSURANCE ADJUSTER, WHO WAS ALSO UNABLE TO DETERMINE THE CAUSE OF THE FAILURE. THE VEHICLE WAS LABELED AS DESTROYED. THE CONTACT IS IN THE PROCESS OF NOTIFYING THE MANUFACTURER. THE FAILURE MILEAGE WAS 33,000.