Im a German work and traveller, so by the time I get my refund, I wont be here in Canada anymore and wont have a Canadian bank account.Do I get a cheque mailed toGermany?

Yes. If you have direct deposit set up with the Canada Revenue Agency (CRA) you can call them and ask to have a check mailed instead.

If you are in Canada or the United States, you can call the CRA at 1-800-959-8281. If you are elsewhere, you can call 613-940-8495. This page has more ways to contact the CRA: Contact the Canada Revenue Agency