Do you ever have to worry about your Prius developing a blown head gasket problem? While the Prius is a well-made and well-designed vehicle, just like any motor under high compression and high heat conditions, a blown head gasket is always a possibility---but especially if it is a 3rd generation Prius. Here’s what a blown head gasket and the engine block looks like on a 2013 Prius with some special caveats to its repair you need to know about.