Let's get one major criticism out of the way first. Yes. it is shaped very much like a potato.
But that's the price paid for fitting this much interior space onto the wheelbase of a compact car. That small "footprint" means the C-Max is easily maneuverable in nasty city traffic. If you're single, this car will not get you a date. But it will get you a parking space, which is probably harder to come by.