Table 5.

EU emissions limits (g/kWh, SPN in #/kWh) for heavy-duty engines and vehicles.

Emission Standard	NOx	CO	THC	NMHC	CH4	NH3*	NMOG	PM	SPN23	SPN10	N2O	HCHO
Euro VI Diesel	0.460	4.0	0.160	−	−	10	−	0.010	6.0x1011	−	−	−
Euro VI CNG	0.460	4.0	−	0.160	0.50	10	−	0.010	6.0x1011	−	−	−
Euro 7** −100thperc./Cold emissions	0.350	3.50	−	−	0.50	0.065	0.20	0.012	−	5.0x1011	0.160	0.030
Euro 7**- 90thperc./Hot emissions	0.090	0.20		−	0.350	0.065	0.050	0.008	−	2.0x1011	0.10	0.030

*In Euro VI a limit for NH₃ (in ppm) is set for the engine test over the WHTC; **Euro 7 limits apply to all fuel and engine technologies.