Document GRPE/2018/3 presents a consolidated revision of UN R96 to align the UN Regulation with Regulation (EU) 2016/162 concerning gaseous and particulate pollutant emission limits and type-approval for internal combustion engines for non-road mobile machinery. This proposal presents editorial improvements and corrects the provision allowing contracting parties to require in-service monitoring of engines by explicitly excluding its application from the scope of the Regulation.