Tax criteria by canton:
Displacement only: AG, FR, GL, GR, LU, NW, OW, SH, SO, TG, VS, ZG
Gross weight only: AI, AR, BE, BL, JU, SG, UR
Horsepower and gross weight: SZ, TI, VD
Displacement and gross weight: ZH
Net weight and CO2 emissions: BS
Horsepower only: GE
CO2 emissions only: NE
And for the full picture you still need to add the discounts or exemptions for low and zero emission vehicles that also vary wildly.
Tax criteria by canton:
Displacement only: AG, FR, GL, GR, LU, NW, OW, SH, SO, TG, VS, ZG
Gross weight only: AI, AR, BE, BL, JU, SG, UR
Horsepower and gross weight: SZ, TI, VD
Displacement and gross weight: ZH
Net weight and CO2 emissions: BS
Horsepower only: GE
CO2 emissions only: NE
And for the full picture you still need to add the discounts or exemptions for low and zero emission vehicles that also vary wildly.