This paper presents an approach to a functionoriented structuring of mechatronics systems, exemplified by means of an autonomous vehicle, the X-mobile, including an active wheel suspension. This vehicle i s a fine example of the designmethodology of mechatronic systems conceived at the MLaP (Mechatronics Laboratory Paderborn). The design methodology centers around a holistic, interdisciplinary consideration of all system components involved. The development of the X-mobile, from early stages to the simulation to the implementation, is also described.Furthermore, this paper includes more detailed technical information.