2020 Hyundai Elantra Gt

The contact owns a 2020 Hyundai Elantra GT. The contact stated while driving 5 MPH in stop-and-go traffic, the engine light illuminated. While driving, the vehicle stalled. The vehicle was towed to the local dealer, where it was diagnosed that the knock sensor needed to be replaced. The vehicle was repaired, but the failure recurred. While driving at 35-45 MPH three days later, the engine light illuminated again, and the vehicle started to decelerate. The vehicle was towed back to the local dealer, who performed a combustion test. The dealer requested permission for a mechanic to take the vehicle to the residence for a road test. The contact declined the request. The manufacturer was contacted and opened a case. The contact requested a buyback. The failure mileage was approximately 29,000. The VIN was not available.