Germany

Yes, you can do car designing course in Germany. But you have to fulfil the eligibility criteria and crack the required exam.

Yes you can go to Germany but you have to learn German language and clear the paper along with GRE to pursue Masters.

https://studyabroad.shiksha.com/10-most-affordable-mba-colleges-in-germany-articlepage-495
You can follow this link to know about the universities in Germany.

Yes, Germany doesn't accept students who have done Diploma from India. Give IELTS exam and try to get certification in German language in order to be eligible for every university as some university teaches courses in German language.

Mostly in Germany they use there language which is German but there are some institutes who taught in english language so both German and English languages have equal value but mostly they use German.

You'll also need to check the language requirements. Most courses are taught in German, requiring international applicants to submit proof of proficiency in the German language. Two main tests are available for this purpose: the Deutsche Sprachprfung for then Hochschulzugang (DSH, meaning Germanlanguage examination for university entrance) and the Test DaF. Likewise, if your course is taught in English, unless you are a native speaker or have previously studied in English, you will need to prove your knowledge of the language with a test such as IELTS or TOEFL. Universities will usually state the score/s they require on their websites.

While you can get details here studyabroad.shikha.com/germany
IELTS and tofel score are accepted around the world for proficiency in language and is considered mandatory all around the world.

Hi,
Sorry to say, but you want to get admission in Germany you have to score at least 65 % in Bachelor degree. Best of luck.