14: Nissan Maxima
The Maxima is often referred to as one of the most popular Nissan models of all time. This was the first sedan with a talking interior but was even a thing. But the modern Maxima models have started to wane in popularity (via Hot Cars).
One of the reasons for this has been the expensive repair costs associated with the car. The Maxima is not cheap to repair, and the most common problem has been associated with the CVT transmission. The head gasket is also an expensive repair that tends to happen on the older Maxima models.