Gas Recirculation Valve (egr Valve) problems of the 2015 Hyundai Veloster

Driving on major highway, car lost power. Stepping on the gas would not allow the car to move. Car is no longer able to be driven and had to be towed to dealership. We are being told the engine is bad and needs to be replaced. The only detail is there is a noise. This is similar to the same problem as the earlier year vehicles. This is a huge safety concern and luckily nobody was injured and there was no crash or fire. It has taken 4 days to get a diagnostic from Hyundai. They will not authorize a rental until warranty work is authorized by Hyundai, which could take another three to four days. Considering the service dept is trying to go through Hyundai for warranty instead of the extended warranty company leads me to believe there is something bigger that they are not being transparent about. I regret buying this car.