39: 2006 MazdaSpeed 6
Just like the smaller MazdaSpeed 3, there was also a larger MazdaSpeed 6 that was introduced. The Mazda 6 did everything right as a sedan and offered a breath of fresh air from previous Mazda offerings. The interior of the Mazda 6 was more spacious and there were more luxury items to choose from (via Car & Driver).

The performance of the MazdaSpeed 6 was also quite improved over the standard model. This sedan performed like a sports car in every sense of the word. Finding a MazdaSpeed 6 on the market is not going to be easy, as the car was rare and values will only increase over time.