One problem related to blown head gasket has been reported for the 2014 Ford Fiesta. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Ford Fiesta based on all problems reported for the 2014 Fiesta.
My vehicle, after less than 75k miles began to have overheating problems. I had various parts replaced until finally it was determined that the head gasket had blown on it. After researching forums and sites where other owners of the same vehicle or vehicles with the same type of engine, were experiencing issues much like mine. The engine head it made of aluminium and the engine block is made of cat iron. This fact coupled with high cylinder pressures and a naturally high engine operating temperature results in various parts failing to to excessive pressure and heating. Although Ford has acknowledged this issue by updating their replacement components, they have not addressed the safety or monetary impact of those who have had to repair a known problem in their engines.