Another to add to the list. I got my C-MAX SE at the end of December and got the first dead battery last week. I had Roadside Assistance come to jump it, took it to the dealership and they put in a new battery, but 5 days later, it was dead again. I had it jumped again and drove it back to the dealership. They kept it overnight to run tests on it, but found nothing wrong so I drive it back home yesterday. This morning, the battery was dead again. I don't have time to go back to the dealership today, but it seems likely it's going to happen again so next time, I'll bring it back in. I'm glad I came across this thread so I know I'm not the only one with this problem!