48: 2017 FIAT 124 Spider
The return of the Fiat brand to the U.S. market was highly publicized and the Spider was one of the most anticipated cars. Competing directly with the likes of the Mazda MX-5, the Fiat 124 Spider had a lot of potential. Unfortunately, there were a lot of quality issues early on that prevented the car from being a success (via Car Talk).
The reliability of the roadster was questionable at best. There have been several popular roadsters in the past couple of decades, but the Fiat 124 Spider fell flat in almost every area.