Currently, all newly registered vehicles have to comply with the Euro6 emissions standard, which is in force since 2015. In the course of the development from Euro1 to Euro6, the legislator has lowered the limit values for nitrogen oxides in passenger cars by 97 percent and for particulates by 98 percent. The regulation has since been supplemented by requirements in the new WLTP test cycle and in real traffic (RDE), which have been mandatory since September 2017. Vehicles that meet the RDE standards are assigned to the Euro6d or Euro6d-Temp emission classes.
In addition, stricter requirements for evaporative emissions (EVAP) and technical requirements for monitoring fuel and electricity consumption were introduced. In addition, there are requirements for In-Service Conformity (ISC). This means that even during operation it is ensured that no more exhaust gases are emitted than permitted.