From: European road transport policy assessment: a case study for Germany
Emissions standard | Issued | Description |
---|---|---|
Euro 1 | 1993 | Catalytic converter and electronic fuel injection mandatory for new registrations |
Euro 2 | 1997 | Limitations for petrol and diesel engines |
Euro 3 | 2001 | Obligation for On-Board Diagnostics (OBD) as an emissions diagnostics system for petrol engines (2004 for diesel) |
Euro 4 | 2006 | Adjustment of pollutant limits pave the way for diffusion of a particulate filter |
Euro 5 | 2008 | Limits tighten, the particulate filter becomes mandatory (for diesel) |
Euro 6 | 2014 | Stricter homologation and test procedures (WLTP and RDE), particulate filter for petrol cars and SCR for diesel cars |
Euro 7 | 2025 | Not issued yet (Legislative Proposal in 2022)—ammonia, methane (CNG fuels), and further regulations |