The Department of Vehicle Systems and Fundamentals of Electrical Engineering (FSG) deals with problems of electrical engineering, electronics and mechatronics in vehicles in research and teaching. It is a founding member of the Institute of Powertrain and Automotive Engineering (IAF) at the University of Kassel. Since April 2023, the department has been provisionally headed by Prof. Mohamed Ayeb. The focus is on energy efficiency, optimization and validation of electrical vehicle systems and components, especially in the areas of on-board networks and e-drives. In addition to theoretical work, simulation and test and development methods, the focus is on experimental measurement, validation, model parameterization and measurement technology, so that both the usual software tools and extensive test bench and laboratory facilities are available.