The manufacturers told a bench of Justices Madan B Lokur and Deepak Gupta that as per report of the Environment Pollution Control Authority (EPCA), they have to start the conversion of their vehicles into BS-VI from 2019 so that it could be sold from April 1, 2020, but said that there were technological issues in it.
The BS-VI emission norm is scheduled to come into force from April 1, 2020.
The lawyer also argued that "if the Government of India wants to discourage people from buying diesel vehicles, they should equate the price of petrol and diesel. Why the buyers should be asked to pay tax for buying a diesel vehicle?"
When the counsel sought clarification on the BS-VI issue, the bench asked Solicitor General Ranjit Kumar, appearing for the Centre, about it.
More From This Section
Recently on March 29, the apex court had banned sale and registration of vehicles, which were not BS-IV compliant, in India from April 1 when the new BS-IV emission norms came into force while observing that health of people is "far, far more important than the commercial interests of the manufacturers".
During the hearing today, the bench also dealt with the issue relating to the EPCA's proposal to ban use of fuels that are high in sulphur content -- furnace oil and pet coke -- by industries in the NCR.
The bench, which had earlier asked the Centre to consider banning the use of furnace oil and pet coke by industries in NCR, has fixed this matter also on May 1.
Besides these, the apex court also took up for hearing the issue raised by the EPCA which has proposed that an integrated public transport system should be in place in Delhi-NCR as it would help in reducing air pollution.
The court also heard other related issues including the complaint of Indraprastha Gas Ltd that Haryana was not allowing its operation in Gurugram.
The apex court is hearing a PIL filed by environmentalist M C Mehta in 1985 in which he has highlighted the issue of ambient air quality and air pollution in Delhi-NCR.