When analyzing the automotive industry, a complex aspect is the fact that vehicle versions enter and leave the market on the basis of the production by car manufacturers and the purchase by customers. Also, the composition of the offering in terms of equipment, power and other characteristics can change significantly from manufacturer to manufacturer, and in time within the same model. The aim of this thesis work is then to highlight areas of market offering constant over time, composed by vehicles similar to each other, in order to have information about which new comparable vehicles can be a substitute to the ones going off the market.