Very simple process, this is what happened.
1) received letter saying date and time of MFK
2) logged onto mfk website and changed the date and the time to 7am to ensure there were no queuing issues
3) printed the new form
4) arrived at MFK station and parked in the correct lane (they are numbered, and the appointment form has the number on it, PB2, PB4 etc)
5) walk to payment booth, give cashier appointment form and pay CHF60
6) she gives you the test inspection form
7) get back in car, man comes out, and beckons me to front (there was a taxi in front of me)
8) stop at the yellow line
9) get out of car and give the technician the inspection form from the cashier, the grey ownership form and the emissions booklet
10) go and sit down, they test the car
11) when it got to the end of the hall, he beckoned me to go to the exit, which is a side door by the entrance, outside are some bays and
some paperwork stations
12) they do a Dukes of Hazzard style lap of the building in the car
13) they come back, and in my case gave me the new ownership form with the new MFK date on it, I presume it could go the other way for
some people at this point
The whole process took less than 15 minutes, from arriving to departing.
And no, I didn't clean the car beforehand, but it had been serviced in August this year.
The only time there was any required communication was him telling me to stop at the yellow line and asking for the paperwork,
otherwise it was just pleasantries, so you don't need German at all.