I've got a 2017 CC and it is flex fuel... not the reason I bought it at all, but was the color and options I wanted out of the choices available and just happened to be a flex fuel model. From the research I've done, the high octane burns so much faster that the money savings is moot. There's several stations in my area that have it and it is about a dollar cheaper a gallon. Any experience with it? Pros or cons to having it? Does it increase the value (price wasn't any more than similar non flex fuel versions)? From what I've read, it seems the fuel pump is larger and different injectors, but is that good or bad? I've never had a vehicle that ran flex and didn't really think much about it when I got the truck.