However, Society of Indian Automobile Manufactures (SIAM) says since the notification allows them to manufacture vehicles till March 31, the ban can not be made effective from April 1.
Senior counsel K K Venugopal, representing Hero Motors, argued that when BSII and BS III vehicles were introduced in 2005 and 2009, the government had allowed the manufacturers to continue production for some more time.
Automakers in India would soon have to furnish a detailed report about their unsold, BS-III rated vehicles to the Apex Court.
The Supreme Court on Monday sought data on unsold vehicles which are Bharat Stage-III (BS-III) emission norms-compliant as the Environment Pollution Control Authority (EPCA) sought to enforce a government notification prohibiting the sale of such vehicles from April 1.
The auto companies have been manufacturing BS-IV compliant passenger vehicles and commercial vehicles since 2010.
The bench headed by Justice Madan Lokur was hearing the pleas of manufacturers who had huge stocks of vehicles with BS III certifications.
Bajaj further said that the government notification bans sale and manufacturing of BS III vehicles from April 1, 2016.
Siam told the court that about 20,000 passenger vehicles, 750,000 two-wheelers, three-wheelers, about 4,500 three-wheelers and 75,000 commercial vehicles, which are BS-III compliant, might be unsold. This later led to SIAM changing its stance and did not seek for the deferment of the BS-IV emission rules.
As you must already know, the new BS-IV emission norms are scheduled to kick-in from April 1, 2017. The court had set April 1 as the deadline for stopping registration of such vehicles and switch on to BSIV whose toxic emissions are less than that of the old vehicles.
Bajaj Auto has been fiercely against the move to extend the deadline as it has changed all its vehicles to adhere to the BS-IV norms.