What are Various BS Fuels? BS -VI Auto Fuel to Be Introduced Early in NCT Delhi (Download PDF)

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To satisfy India’s commitment at COP 21 for reducing vehicular emissions and improve fuel efficiency – (reducing the carbon footprints and keep a healthy environment), India is following regulatory pathway for fuel quality and vehicle emissions standards termed as Bharat Stage (BS).

Image of BS-VI Auto Fuel

Image of BS-VI Auto Fuel

Image of BS-VI Auto Fuel


  • Ministry of Petroleum and natural Gas successfully introduced the BS-IV grade transportation fuels across the country on April 1st 2017.

  • Government in consultation with stakeholders earlier decided to meet international best practices by leapfrogging directly from BS-IV to BS-VI grade by 1st April, 2020, skipping BS-V.

  • Oil refining companies are making huge investments in fuel up gradation projects to produce the BS-VI grade fuels.

  • However taking into account the serious pollution levels in Delhi and adjoining areas, Petroleum Ministry in consultation with Public Oil Marketing Companies decided for preponement of BS-VI grade auto fuels in NCT of Delhi from 1st April 2018 instead of first April 2020.

  • Government also examining possibility of introduction of BS-VI auto fuels in the whole of NCR area from 1st April 2019.

What Are Bharat Stage Emission Standards (BSES)?

  • Bharat stage emission standards (BSES) are emission standards instituted by the India to regulate the output of air pollutants from internal combustion engines and spark-ignition engines equipment.

  • Based on respective European regulations EURO (I, II, III, IV etc. )

  • Were first introduced in 2000

  • Since October 2010, Bharat Stage (BS) III norms have been enforced across the country.

  • 13 major cities have Bharat Stage IV emission norms since April 2010 which are now enforced for entire country since April 2017

  • Phasing out of 2-stroke engine for two wheelers, the cessation of production of Maruti 800 & introduction of electronic controls have been due to the regulations related to vehicular emissions.

Emission Norms in India

  • 1991 – Idle CO Limits for Petrol Vehicles and Free Acceleration Smoke for Diesel Vehicles, Mass Emission Norms for Petrol Vehicles.

  • 1992 – Mass Emission Norms for Diesel Vehicles.

  • 1996 – Revision of Mass Emission Norms for Petrol and Diesel Vehicles, mandatory fitment of Catalytic Converter for Cars in Metros on Unleaded Petrol.

  • 1998 – Cold Start Norms Introduced.

  • 2000 – India 2000 (Equivalent to Euro I) Norms, Modified IDC (Indian Driving Cycle), Bharat Stage II Norms for Delhi.

  • 2001 – Bharat Stage II (Equivalent to Euro II) Norms for All Metros, Emission Norms for CNG & LPG Vehicles.

  • 2003 – Bharat Stage II (Equivalent to Euro II) Norms for 13 major cities.

  • 2005 – From 1 April Bharat Stage III (Equivalent to Euro III) Norms for 13 major cities.

  • 2010 – Bharat Stage III Emission Norms for 2-wheelers, 3-wheelers and 4-wheelers for entire country whereas Bharat Stage – IV (Equivalent to Euro IV) for 13 major cities for only 4-wheelers. Bharat Stage IV also has norms on OBD (similar to Euro III but diluted)

  • 2020 – Proposed date for country to adopt Bharat Stage VI norms for cars, skipping Bharat Stage V

- Published/Last Modified on: November 20, 2017


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