What should I pay attention to when driving from Germany to Switzerland ?

I drove from Germany to Switzerland. It was okay. You need to buy a expressway ticket in Switzerland. There are gas stations that sell tickets. Just follow the navigation and pay attention to the traffic signs, there shouldn't be any problems.

If you don't have a Swiss motorway ticket, you need to buy one. Otherwise, just follow the navigation. Basically, they are all motorways, and the traffic conditions are fine, unless you have a specified route.

Toll is required when crossing Switzerland. It is recommended to buy it at the gas station and stick it on the windshield directly. It will be more expensive if bought on the highway. In addition, you should check whether the car rental company charges an additional fee for crossing the border, which is not cheap.