TL- THE CONTACT OWNS A 2002 MAZDA TRIBUTE. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 50 MPH, THE SERVICE ENGINE WARNING LIGHT ILLUMINATED AND THE SPEED REDUCED TO 20 MPH. THE CONTACT NOTICED THERE WAS SMOKE EMITTING FROM UNDER THE HOOD AND IT WAS DISCOVERED THAT THE ENGINE AND WIRING WERE ON FIRE. A FIRE DEPARTMENT WAS ABLE TO EXTINGUISH THE FIRE. A POLICE/FIRE REPORT WAS FILED AND THERE WERE NO INJURIES REPORTED. THE VEHICLE WAS TOWED TO THE CONTACT'S RESIDENCE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS NOT AVAILABLE. DJR