Germany

In the US, the average salary package is around 35 Lakh rupees to 40 lakh rupees. The scope is very vast.
In Canada, the average salary is around 20-30 lakhs. The scope is very high.
In Germany, the average package is around 12-16 lakh rupees. Germany has good scope.
The United Kingdom is good too, but it's visa rules are very rigid.

Below mentioned is the list of universities for mechanical engineering in Germany:
https://www.daad.de/deutschland/studienangebote/international-programs/en/?p=l&q=mechanical°ree[]=2&fos=0&fee[]=0&sortBy=1&page=1&display=list es.html

TUB is one of the best university of Germany and World, so your UG marks should be at least over 75% with that you need to score minimum 6 band in IELTS or minimum 79 in TOEFL. Try to score high, it will help you to get admission there.
All the best.

Most of the universities does not charge tuition fees, just the semester ticket (semester fees) of 200 Euro to 400 Euro per semester is the amount that you need to spend. Overall, it will be around 16500 euros that you have to spend for 2 years to stay there. So you require around 18000 Euros in total.

As a mechanical engineer, Germany is the best option to do your PG course. Getting a seat in a top university will definitely lead you to a good job.

You should visit the DAAD website. They regularly organize free webinar to study in Germany.

Either you go for some paid Masters course, or choose some German taught Masters courses, because you are not eligible for studying in general English taught courses.

As per better education in mechanical engineering, Germany is the best, but as per PR, Canada is the best place for everyone.

You should opt for Germany as education cost is cheaper in Germany as compared to Canada. You have more job opportunities there particular for mechanical engineering. You need to learn the German language for that. Though Canada is good for Masters but it's more costly as compared to Germany. Canada is preferred for CSE.

Check out the link mentioned below:
http://www.google.co.in/url?q=http://www.scholars4dev.com/category/country/europe-scholarships/germany-scholarships/