Bharat Stage (BS) VI emission standards

India has adopted Bharat Stage (BS) Emission Standards since 2000, modelled on EU norms.
In April 2020, India leapfrogged from BS-IV to the implementation of BS-VI, with current standards similar to Euro-6/VI norms. 

The BS standards regulate tailpipe emissions of air pollutants including particulate matter, SOx and NOx as well as carbon monoxide, hydrocarbons and methane. They have been developed for all vehicle categories and apply to vehicles manufactured since April 2020. 

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