The contact owns a 2016 Chevrolet Sonic. The contact stated while driving 25 MPH, the vehicle began to stall inadvertently. The engine overheating warning light illuminated. The contact stated that she veered to the side of the road and turned off the vehicle. The contact's friend came on the scene and provided her with engine coolant, and she added the coolant to the vehicle. The contact continued to drive the vehicle. The vehicle was taken to an independent mechanic who diagnosed that the thermostat housing had melted and needed to be replaced. The contact stated that the vehicle was repaired; however, the failure reoccurred while driving. The vehicle was taken to an independent mechanic several times and the thermostat housing was replaced three times due to its plastic-based material. The contact stated that she was unable to drive the vehicle for more than an hour and a half without a reoccurrence of the failure. The vehicle was taken back to the independent mechanic who diagnosed that the head gasket had melted. The independent mechanic advised the contact to purchase a new vehicle like the engine compartment of the vehicle was poorly made. The dealer was not notified of the failure. The manufacturer was notified of the failure and offered to assist the contact with scheduling an appointment with the dealer for diagnosis. The vehicle was not repaired. The vehicle's approximate failure mileage was 38,000.
NHTSA ODI 11444626