Introduction of International Whole Vehicle Type Approval (IWVTA)

GOJ is expected to adopt the emission regulations (R154) based on the UN Worldwide harmonized Light duty driving Test Procedure (WLTP) by the summer of 2021, making a great leap forward. On the other hand, even after the introduction of the IWVTA system in July, 2018, it is still incomplete and for the devices subject to IWVTA, type approval on whole vehicle cannot be obtained, and there exist Japan-unique regulations that remain applicable. Due to these factors, the use of UN-R0, designed for mutual recognition of type approvals between Japan and the EU, is not progressing.


  • Japan should eliminate Japan-unique regulations that remain applicable such as the immediate front/left requirements by establishing international regulations, etc.
  • Japan, in close cooperation with the European Commission, should realize a complete system of mutual recognition of type approvals on vehicles by expanding the scope of the IWVTA system to cover all requirements of the vehicle type approval systems of Japan and Europe.