European emission standards for passenger cars (Category M*), g/km
Tier Date CO THC NMHC NOx HC+NOx PM P [#/km]
Diesel
Euro 1† July 1992 2.72 (3.16) - - - 0.97 (1.13) 0.14 (0.18) -
Euro 2 January 1996 1.0 - - - 0.7 0.08 -
Euro 3 January 2000 0.64 - - 0.50 0.56 0.05 -
Euro 4 January 2005 0.50 - - 0.25 0.30 0.025 -
Euro 5a September 2009 0.50 - - 0.180 0.230 0.005 -
Euro 5b September 2011 0.50 - - 0.180 0.230 0.005 6×1011
Euro 6 September 2014 0.50 - - 0.080 0.170 0.005 6×1011
Petrol (Gasoline)
Euro 1† July 1992 2.72 (3.16) - - - 0.97 (1.13) - -
Euro 2 January 1996 2.2 - - - 0.5 - -
Euro 3 January 2000 2.3 0.20 - 0.15 - - -
Euro 4 January 2005 1.0 0.10 - 0.08 - - -
Euro 5 September 2009 1.0 0.10 0.068 0.060 - 0.005** -
Euro 6 September 2014 1.0 0.10 0.068 0.060 - 0.005** 6×1011***
* Before Euro 5, passenger vehicles > 2500 kg were type approved as light commercial vehicles N1-I
** Applies only to vehicles with direct injection engines
*** 6×1012/km within first three years from Euro 6 effective dates
† Values in brackets are conformity of production (COP) limits