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10 Things you need to know about BS-IV emission norms in India


India is switching to Bharat Stage IV (BS-IV) emission norms from BS-III from April 1, 2017.

Automotive India News has listed below top 10 things that you may be interested to know about this transformation.

  • Indian emission standards are governed by the central pollution control that helps to regulate the air pollutants from the vehicle.
  • BS or Bharat Stage norms represent standards of pollution control and environment sustenance that vehicle manufacturers need to adhere to. Already several manufacturers like BharatBenz have started selling BSIV norms while effectively promoting it.
  • Bharat Stage or BS are basically similar to European emission regulation and were first introduced in 2000.
  • Step-by-step stringent norms have been implemented with the latest being introduction of BS-IV on all vehicles effective from April 1, 2017.
  • India introduced BS-III norms first in 2005 in 15 cities across the country and the nationwide implementation of BS-III vehicles was completed by 2010.
  • BS-IV was first introduced in 2010 for 13 metro cities in India and the nationwide implementation comes into effect now as Supreme Court banned the sale of all BS-III vehicles starting April 1, 2017.
  • The nationwide implementation of BS-IV suffered a delay due to lack of availability of BS-IV compliant fuel. Oil makers had to make adequate investment to produce 50 ppm ultra low sulfur required to support BS-IV norms.
  • Many auto makers including Ashok Leyland have decided to export their left over BSIII vehicles to the countries, which still follow BSIII norms.
  • The chunk of the inventory of BS-III vehicles pertains to the two-wheelers segment.
  • The Indian auto industry currently has an unsold inventory of around 8.2 lakh BS-III vehicles having a combined value of Rs.12,000 crore.

About Anitha

Backed by over 10 years experience with India’s top media house “The New Indian Express”, Anitha is interested in writing all aspects of automobile industry. Her qualification MSc (Industrial-Psychology) helps her to deeply analyse the auto manufacturing industry.

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