The serial production of the Vaz-2104 started at Volzhsky automobile plant in 1984. A new model released in parallel with the similar class car Vaz-2102 until 1985. When you create the model, the designers were guided by the important feature of the time creating a new model for production with minimum costs and maximum customer benefit. So was based on the model Vaz-2105. After elongation of the roof appeared to reinforce the rigidity of extrusion moulding. This design allowed the body to place on the roof of a long trunk, which recommended not to overload as the universal body stiffness calculation is much lower than the sedan. The new model has rear door which opens up, it was absolutely new solution, rear window defogger and wiper, who would later become standard equipment, since 1994, were only exports the options and modification of Vaz-21043.