I suppose it's like any other car; some people will like the style and some won't. Of course bringing the status of an American icon to the table is another component to the styling but.... I don't care for it. When I first saw it, head on, at the N.Y. Auto Show I mistook it for a Fusion. I was and am so disappointed. I don't like how the design of the front doesn't go with the back; it looks nose-heavy to me. From the rear 3/4 view it looks like a 1970s Toyota Celica hardtop. The front does indeed look like a Fusion to me; it needs the fog lights in the grill like on my 2014 GT Premium. I haven't had a good look at the interior (I couldn't get a good look at it at the auto show) but from the pictures I've seen it does look nice.
But...it is a Mustang; same wonderful exhaust noise, awesome performance, and driving exhilaration. Maybe in time the styling will grow on me.