Where do I buy the WC?

You can't buy the WC function, you have to buy a vehicle which has it. Usually big busses like Setra or Neopan have it, there are probably more but I still don't know them

Small busses, older Mercedes, smaller Tempa, Yuton and Irizar should not have the WC

Setra, Neopan, Volvo should have the WC

Nam, Sania and other are unknown for me

I hope this message will help people and sorry if there might be some grammatical problems.

Anyways, have a good day and Bye!

You cannot unlock wc on most of the cheaper buses so go big or go home

Hello, you can get WC access if you have vehicles like the newly added volvos and busses.

Thanks for asking!

-Dave.

Yes, I kinda understand German, Neopan Tourliner has a WC!