In the last few years, nearly every new product introduced by Ford (NYSE:F) has gone on to be a big hit. Its latest entry, the Fusion sedan, is no exception: Sales are up over 25% so far in 2013.

But the Fusion's sales growth might be about to stall. In this video, Fool.com contributor John Rosevear takes a look at the problem facing Ford and its hot new sedan – and the steps that the company is taking to overcome it.