Mars exploration is a topic of increasing interest, with a growing number of robotic missions planned for the coming decades. In this context, the design and analysis of reliable propulsion systems play a fundamental role in ensuring mission success. This thesis presents the development of a simulation model of the propulsion systems of a Mars Lander and its Carrier Module. The work is based on current European Space Agency (ESA) requirements for future Mars exploration missions, taking the MEDal mission concept as a reference and drawing from the analysis of configurations and mission profiles of past missions, such as Mars Science Laboratory.