The Infiniti M was a series of mid-size luxury cars that were introduced for the 1990 model year. Over the course of its history, the Infiniti M was built in four generations. For the first generation, the M was only offered in one variant, the M30, which was offered in coupe and convertible body styles. This model lasted until 1992, and it wouldn't be until the 2003 model year that the second generation M45 sedan was introduced. This was followed in succession by the Third Generation (2006-2010), and Fourth Generation (2010-2013). In 2013, Infiniti changed their naming system, resulting in the Infiniti M being renamed the Q70.