2015 Hyundai Elantra drivetrain & axles problems

One morning I started my car like any normal day and there was a ticking sound. It was cold out that morning so I didn't think much of it but I took it to get its oil changed the next day and thats they told me that it was something internal and I should take it to a dealer. I took it to a dealer and they told me that there was an engine knock and that the only way to fix it was to basically get a new engine.

The contact's daughter owns a 2015 Hyundai Elantra. The contact stated that while her daughter was driving at various speeds, the vehicle was jerking and stalling. The air bag, check engine, and various other unknown warning lights were illuminated, and messages were displayed. The vehicle was taken to a local dealer, where the failures could not be duplicated. The vehicle was not repaired.