Hi,
whilst looking for used cars in Zurich lake area I went across a recent TCS MFK test which was performed exactly 3 years after the last MFK (and this for a car over 10 year old). I believe it is fine to assume MFKs in Zurich area cumulate a delay of 1 year vs normal (maybe due to covid?). I would appreciate your views for the same cantons and also others, so we share common knowledge. thanks

I've gone 10+ years several times, and 14 years once.

Tom