TL* THE CONTACT OWNS A 2007 HONDA FIT. THE CONTACT STATED THAT THE CHECK ENGINE LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO A MECHANIC WHO STATED THAT THE SPARK PLUG WAS LOOSE. THE MECHANIC TIGHTENED THE SPARK PLUG, BUT THE ENGINE LIGHT ILLUMINATED AGAIN SIX MONTHS LATER. THE CONTACT BROUGHT THE VEHICLE BACK TO THE DEALER AND THE MECHANIC STATED THAT THE SPARK PLUG HAD COMPLETELY FALLEN OUT OF ITS NORMAL HOLE AND THAT A HELI-COIL WOULD NEED TO BE INSTALLED. THE VEHICLE WAS REPAIRED AGAIN. TWO MONTHS LATER, WHILE DRIVING 55 MPH, THE CONTACT HEARD A LOUD BANG AND NOTICED SMOKE AROUND THE VEHICLE. THE VEHICLE WAS TOWED TO THE MECHANIC AGAIN. THE MECHANIC COULD NOT RE REPAIR THE SPARK PLUG AND STATED THAT A NEW CYLINDER HEAD WAS NEEDED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 84,000.