What are the chances to get selected in German universities for mechanical design or automobile engineering without any work experience?

If your acedmic record is excellent you will be able to get admission in German Universities. Certification in German language will also be helpful in admission.

Germany is open with or without experience both at bachelor's level u dont require experience but at masters if u hv its an advantage. while english is accepted as a medium of instruction you hv to learn german for work anyway in germany.