There's an option called "Preferred roads", in German "Bevorzugen von..": navigation profile > routing parameter
But the only two options there are called
- Autobahnen bevorzugen (prefer motor ways)
- unbefestigte Straßen bevorzugen (prefer unpaved roads)
The first option is not changeable, even if you set "Keine Autobahnen" (no motor ways) in roads to avoid.
Could someone explain this to me, please? Why is one type of road listed there, and why can't I change it? Did I do something wrong or did I misinterpret something?