Mazda continued to develop the Wankel engine and the Cosmo in unison over the next several decades, with the CD and HB generations of the model coming out in 1975 and 1981 respectively.

Mazda switched back to a coupe body style for the next generation of Cosmo's, the Cosmo CD (1975 to 1981). It was available as both a fastback and a Landau-style extended coupe. Mazda holds a ...