Improving agricultural productivity is one of the biggest challenges Agriculture and Engineering face. A possible solution is the creation of soil databases and/or maps to apply precision agriculture techniques, aiming to produce more in the same land, using less agricultural supplies. This practice may be developed with the help of rovers applied to e.g. agricultural data collect, mapping, scouting and supply tasks. However, the rover needs to move and adapt to the terrain to obtain a real appropriate map of soil, and the correct application of supplies. In this context, this work presents the simulation of two types of rovers applied to precision agriculture. The models were developed in the software SolidWorks based on two rovers Curiosity and Exo Mars, developed by NASA and ESA, respectively. The paper presents the comparison between Curiosity and Exo Mars models, and their ability to navigate on real terrain. The parameters for comparison were torque, energy consumption and lateral deviation.