The MAZDA3 SP23 Special Edition builds on what is already a great platform. The Mazda3 has been a hit since it began showing up in showrooms last year. To further expand its reach among buyers looking for a compact sedan or 5-door with a zoom-zoom driving experience, Mazda introduced a SP23 edition. While many other world markets have been selling SP23 models, the U.S.-spec SP23 is a special edition model with unique features in only one exterior color choice.