Hi Raviprakash, Check out the list of top universities in Germany based on THE, QS and ARWU ranks here:  https://studyabroad.careers360.com/articles/top-universities-in-germany-2018.

You can find out which universities offer BE/BTech in Automobile, Electrical and Mechatronics from these top ranked universities by visiting their website.

For informations on scholarships check here:  https://studyabroad.careers360.com/articles/top-scholarships-study-in-germany

For scholarship contact the German Academic Exchange Programme (DAAD) on their India website : https://www.daad.in/en/about-us/daad-in-india/