What is it?
The master number is a Swiss administrative term used around vehicle registration and documents.
Where is it found?
It is not the same as a Typenschein, VIN or license plate.
Why does it matter for AutoTyp?
AutoTyp uses these values to make Swiss type approval data readable and to prepare supported vehicle tax estimates.
Why does it matter for vehicle tax?
Depending on canton and vehicle category, technical values can affect the tax estimate. AutoTyp shows missing or not-applicable values honestly.
Example
A master number can appear in official processes; AutoTyp does not provide owner or license plate lookup.
Limitations
AutoTyp.ch is not an official government service. Data can be missing, normalized or different by vehicle version.
FAQ
Is AutoTyp data legally binding?
No. AutoTyp uses available Swiss vehicle type data, but it is not an official government service.
Does AutoTyp show owner data?
No. AutoTyp does not provide owner, license plate or VIN lookup.
Can I calculate vehicle tax with it?
For supported cantons, AutoTyp can show a non-binding estimate. The canton invoice remains binding.