The CO2 tax regulation has been adapted every year since its entry into force. From September 2018, the WLTP test cycle will be used as the calculation basis, replacing the NEDC test cycle. In January 2019, the introduction relief for grams 1 to 3 will also be removed. Probably the biggest change in the regulation will take place in January 2020. The CO2 target value will be reduced from 130 grams to 95 grams at this time. What this means for the Swiss car market is yet to be seen.