The rules regarding car hire in Switzerland and the EU changed 1-May-2016.
From 1-May-2016 any resident of the EU hiring a car in Switzerland is not allowed to drive the car outside of Switzerland into the EU apart from a few special cases. These special cases do not include SOTA bagging and visiting Europe’s largest amateur radio rally. Don’t ask me why the rules have changed. Car hire at Swiss airports was always a bargain compared to EU airports and this route is no longer available.
Guess who was flying to Switzerland and driving from Switzerland to Friedrichshafen? Guess who isn’t traveling that way now? It’s bumped my travel costs by 23% which is annoying. Better to find out now than when you have arrived at the airport. What’s mad in that having rearranged everything, the EU car I will hire can be used to visit Switzerland.
I have no idea if non-EU residents can hire cars in Switzerland and take them into the EU or not.