The contact owns a 2016 Hyundai Santa Fe. The contact stated that while his granddaughter was driving at an undisclosed speed, the vehicle hesitated, and there was white smoke emanating from the exhaust pipe, after which the vehicle inadvertently lost motive power. The driver was able to pull to the shoulder of the roadway, where the vehicle failed to restart. The check engine warning light was illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the cylinder head bolts, resulting in damage to the cylinder head gaskets and requiring a replacement engine. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 87,000.

- Coral Springs, FL, USA

The contact owns a 2016 Hyundai Santa Fe. The contact stated that upon his wife starting the vehicle, she observed heavy smoke coming from the exhaust. The contact stated that his wife heard an abnormal sound coming from the engine compartment. The check engine warning light was illuminated. The vehicle was towed to the dealer, who determined that coolant intrusion had damaged the head gasket, and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 95,000.

- Exton, PA, USA