"Department of Heavy Industries has instituted a study on the emission levels by various diesel vehicles as compared to the source of air pollution. Only after the scientific study, any decision to phase out older vehicles can be taken," Minister of State for Mansukh Lal Mandaviya told the Rajya Sabha in a written reply.
In reply to a query as to what are government's plans on the use of diesel cars and SUVs which are more than 15 years old, the Minster also said, "The government has examined the order of Supreme Court and the Department of Heavy Industries has impleaded itself vide affidavit dated April 28, 2016 in the case for presenting a composite view of government."
However, the Supreme Court in June had said it was open to lifting the ban on their registration in Delhi and NCR, subject to a levy of one-time environment compensation cess.