This paper illustrates the use of a Model-Based Testing approach from SysML test model using four complementary automotive case studies. The purpose of these experiments is to give an empirical evidence of the reliability and to show the suitability of this tooled approach for the validation of embedded mechatronic systems (systems mixing software and hardware aspects). The experimented toolchain, based on the Model-Based Testing principles, reuses wellknown and effective existing tools in order to obtain an endto- end toolchain from the modeling step to the execution of the concrete test cases derived from the initial test model. This fully automated toolchain and the four automotive case studies are introduced, and automation feedback is discussed.