The head gasket failed. The check engine light came on and I took it to the dealer before the engine seized thankfully but it could have caused safety issues such as coolant leaks, engine breakdown potentially on the highway which could have caused an accident and risked peopleas lives. If there was oil contamination, the engine could have locked up which def can cause an accident. Engine fire is even possible. The problem has been confirmed by an independent dealer. I know of many others who have experienced the same issue.