Is studying in Germany or Japan a good option for mechatronics? - N Arun
The major obstacle in both countries is language. It is one thing to go to these countries and work using English as the main language of communication with a smattering of the local language to order food at a restaurant. It is an entirely different ask to sit in class for hours a week and comprehend lectures, which, even if taught in English, fail to provide the full experience because the academic's native language is not English. The same issues abound for student interaction, internships, and networking.
If you can manage the language aspect, there are no better countries in which to study. These two countries dominate mechatronics like no other nation in the world.