Car exhaust emission values: Table with limit values for petrol and diesel vehicles

Exhaust emission limits for cars&colon; Table with limit values for petrol and diesel vehicles

The following technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their work. The information provided on this website is intended for use by suitably qualified personnel only.

Car limit values for pollutant emissions

In order to reduce exhaust gas pollutants, the limits for car emissions are set by the EU and regulated by uniform directives and regulations throughout Europe.

The following tables show excerpts from the development of the standards for petrol and diesel vehicles.

Exhaust emission values for petrol engines
Standard	Date	CO	HC	HC + NOx	NOx	PM	PN
EURO 1	07/1992	2.72 (3.16)	-	0.97 (1.13)	-	-	-
EURO 2	01/1996	2.2	-	0.5	-	-	-
EURO 3	01/2000	2.3	0.2	-	0.15	-	-
EURO 4	01/2006	1.0	0.1	-	0.08	-	-
EURO 5 a	09/2009	1.0	0.1	-	0.06	0.005	-
EURO 5 b	09/2011	1.0	0.1	-	0.06	0.0045	6.0 x 10¹¹
EURO 6 a	09/2014	1.0	0.1	-	0.06	0.0045	6.0 x 10¹¹
EURO 6 b	09/2017	1.0	0.1	-	0.06	0.0045	6.0 x 10¹¹
EURO 6 c	01/2020	1.0	0.1	-	0.06	0.0045	6.0 x 10¹¹

Exhaust emission values for diesel engines
Standard	Date	CO	HC	HC + NOx	NOx	PM	PN
EURO 1	07/1992	2.72 (3.16)	-	0.97 (1.13)	-	0.14 (0.18)	-
EURO 2	01/1996	1.0	-	0.7	-	0.08	-
EURO 3	01/2000	0.66	-	0.56	0.5	0.05	-
EURO 4	01/2006	0.5	-	0.3	0.25	0.025	-
EURO 5 a	09/2009	0.5	-	0.23	0.18	0.005	-
EURO 5 b	09/2011	0.5	-	0.23	0.18	0.0045	6.0 x 10¹¹
EURO 6 a	09/2014	0.5	-	0.17	0.18	0.0045	6.0 x 10¹¹
EURO 6 b	09/2017	0.5	-	0.17	0.18	0.0045	6.0 x 10¹¹
EURO 6 c	01/2020	0.5	-	0.17	0.18	0.0045	6.0 x 10¹¹