Typically it is not something offered, but something you have to go get. I got my bachelor thesis sponsored by Nissan, mainly because one of their designers taught a summer program I attended, my professor knew a few people, and I wrote a few letters to people asking for any help possible. To my surprise they not only agreed but were super helpful, flying out at the mid term to review my progress, doing phone reviews, and for the final they sent me a case of modeling clay and two days before the review 2 clay sculptors to perfect my surfaces and die knock paint the entire 1/4 model! Amazing.
So, do some research and find some designers at companies in Germany you respect, write them letters asking for their help and why they should do it, and it might work out. You just have to ask.