TL* THE CONTACT OWNS A 2002 AUDI A4. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 55 MPH SHE HEARD A LOUD POPPING NOISE AND SMOKE CAME FROM UNDERNEATH THE HOOD. THE CONTACT WAS UNABLE TO DRIVE THE VEHICLE AND IT WAS TOWED TO A DEALER. THEY DEALER ADVISED HER THAT THE DIFFERENTIAL IN THE TRANSMISSION OVERHEATED AND NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED AND OFFERED TO BUY HER VEHICLE FOR $500. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS APPROXIMATELY 105,000.