"If you are a temporary overseas visiting driver, and you hold a current overseas driver licence you ... can drive on your current overseas licence as long as:
- You remain a visitor.
- Your overseas licence remains current.
- You have not been disqualified from driving in NSW or
- You have not had your licence suspended or cancelled or your visiting driver privileges withdrawn.
Your licence must be written in English or, if the licence is not in English, you must also carry an English translation or an International Driving Permit with your licence when driving."
Guide for international drivers, http://www.rms.nsw.gov.au/licensing/downloads...
The easiest way is to apply for an international drivers licence (costs €15) from the responsible Führerscheinstelle. It's worth a phone call to see if you need to apply in person (I'm pretty sure you don't) and whether you can submit an (authorised?) copy by post (they check their database anyway, so it should be possible). You could also check with the local diplomatic post tzo see if they provide this service - it's quite common for embassies to do so.
Re #1 Du könntest es also darauf ankommen lassen und nur eine englischsprachige Erläuterung der Feldkennziffern Deines EU-Führerscheins mitführen.
I would strongly advise against this. In any situation in which you need
your licence (accident, insurance claim, car hire...), you will need more than this. Effectively, the international drivers' licence is an "Erläuterung der Feldkennziffern", but it is an official document from a recognised institution, with photo ID and seal, not a printout of a dubious pdf.