"Give us details for your unsold inventory and month-wise figures of BS-III vehicles manufactured after December 2015", the court said.
The manufacturers contended that the 2015 notification only said that they would start manufacturing BS-IV emission norm-compliant vehicles from April and they were permitted to manufacture BS-III vehicles till March 31.
The Supreme Court on Monday asked motor vehicle manufacturers to give full details of the stock of pre-BSIV vehicles with them. The company has been fighting against other automakers over the interpretation of the BS IV notification.
Vinod Dasari, President, SIAM had earlier said, "Contrary to the misinformation being perpetuated by certain sections of the society, specially environmental activists, the auto industry is fully committed to commence manufacturing of BS-IV vehicles from April 1, 2017, across the country".
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. India's BS-IV emission norms are equivalent to Euro IV norms. 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.
The Bharat Stage (BS) is the vehicular norms launched by the government in 2000 to keep a check on air pollution. This has resulted in a rise in costs of its vehicles between Rs 1,000 to Rs 7,000.
Bajaj further suggested if the government chooses to extend the deadline, it should impose a hefty fine on the manufactures.