Determining the structure of a market plays an important role for policy makers to adopt efficient policies to enhance social welfare of their societies. This welfare is fulfilled more and more whenever the industry is reached to a competitive framework. The Car maker industry is one of the important industries that create a considerable value added in terms of the pre and post production chains in all the countries. This industry is the second largest industry in Iran that uses about 600 thousands workers. Accordingly, this study first aims to estimate the strategies adopted by the dominant players of the industry, Iran Khodro and Saipa companies, based on a game-information theoretic framework and then measure the market power of them in accordance with the generalized maximum entropy estimator. The results show that the Lerner index value for Iran Khodro and Saipa is 0.67 and 0.49 respectively indicating that the two companies play an important role in the industry and the industry is so far from the competitive environment.