In the automotive area, a huge number of different technologies were developed in the last couples of years. The car manufacturers have to meet the challenge of selecting the most suitable components for their purpose. One way of doing so is to evaluate these components by the help of a car simulation model. Because of the huge number of different technologies, also a lot of simulation models are needed to be able to compare all of those innovative technologies. In this paper, a system is described, with which it is possible to automatically generate simulation models. This system is used to generate varied simulation models which represent different car configurations. After the generation of a model for each car configuration, a parameter optimization is automatically executed. The result is a chosen car simulation model with its set of parameters, which presents an optimal solution for the regarded aim, e.g. efficiency.