It's most serious gripe concerns the model's handling. CR describes the way that the Mirage wallows around turns with tons of body lean even at low speeds as "scary." A little car with a curb weight of 2,051 pounds just shouldn't corner this poorly.
While Consumer Reports definitely has no love when it comes to the 2014 Mirage, finding something to dislike about practically every aspect of the vehicle from its powertrain to the interior, the reviewers do end up digging out one positive aspect. You'll have to scroll down and watch the video to find out what it is.