NOx, tonnes	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024
2-wheelers	74	73	71	71	69	74	76	81	85	90	94	97	104	110	111	114	115	123	127	127	130	137	142	138	131	129	126	128	129	130	132	134	135	133	128	123	119	112	108	100
Heavy duty vehicles	32244	36423	35773	35355	36589	37841	37490	36363	35494	37764	37098	36880	36462	36392	36881	35251	35415	34577	35816	36063	35632	35563	34616	29785	24855	23985	22987	19859	17814	16569	14143	11997	10026	8485	7032	5708	5168	4523	4140	3233
Light duty vehicles	6757	7216	7401	7532	7654	8120	8652	8783	9037	9408	9227	9052	8868	8855	8871	8908	9193	9123	9230	9698	10003	10739	11371	10962	10000	9643	8995	8681	8379	8117	8306	8314	8339	8373	7908	7083	6874	6808	6303	5999
Passenger cars	55490	56722	57816	59604	59678	63962	66714	66791	65155	63048	58962	55102	52141	48474	44570	41483	38836	37473	36265	34634	31675	29397	27969	25666	23670	22192	21136	20108	19266	18277	17920	16962	16047	15359	14087	11702	10965	10523	10030	9322
Total	94565	100435	101061	102562	103991	109997	112932	112017	109771	110310	105381	101131	97575	93831	90433	85756	83559	81296	81437	80522	77440	75836	74099	66551	58656	55949	53244	48776	45587	43093	40501	37408	34547	32350	29155	24616	23126	21965		20582
Last updated:	12-12-2025