I wouldn't want to daily a Mustang. I haven't had enough seat time in a 2015 to say for sure, but the blind spots are stupid in the 2008 Mustang company car we have. Blind spot isn't anything amazing in the Fiesta, but it's better than a lot of cars right now.
If I wanted an Ecoboost Mustang I would have gotten one instead of my Fiesta ST. But for a car purchase I'd rather do my research and get what I want the first time around rather than just buy what I want in the moment and keep trading in brand new cars like so many people seem to be doing lately...
It comes down to what you want in a car whether you'd prefer the Mustang over the Fiesta.
If I wanted an Ecoboost Mustang I would have gotten one instead of my Fiesta ST. But for a car purchase I'd rather do my research and get what I want the first time around rather than just buy what I want in the moment and keep trading in brand new cars like so many people seem to be doing lately...
It comes down to what you want in a car whether you'd prefer the Mustang over the Fiesta.