SIAM says BS VI emission norms in 2021-22 unrealistic

The Society of Automobile Manufacturers (SIAM) has welcomed the government’s decision to move to BS V emission norms by 2019.

Expressing happiness that the government had accepted the society’s advice to advance the BS V timeline to 2019, SIAM president Vinod Dasari said, “Upgrade to BS V norms would reduce pollution from the 4-wheeler industry by 80 per cent in terms of PM 2.5 for HCV [<I>heavy commercial vehicles</I>] and 90 per cent for passenger cars and [<I>from</I>] NOx by 60 per cent and 64 per cent, respectively.”

However, to make the switch, the requisite 10 PPM sulphur BS V fuel will have to be introduced by oil companies by 2019 across India, he said. The use of BS IV fuel might damage engines as well as after-treatment devices fitted in new vehicles, he said. Also, this might negate the benefits of the new technology.

As for upgrading to BS VI level by 2021-22 as proposed by the government, Dasari said discussions have taken place with various ministries over the last six months. SIAM has highlighted the challenges versus the benefits of advancing BS VI norms from the date recommended by the AFP Committee, which was April 2024.

SIAM has proposed that the BS VI norms be advanced to 2023 by compressing the technology development time by a year. Any further advancement would neither be technically possible nor advisable due to the need for extensive testing and validation of the new technologies.

Technology providers have expressed their inability to provide fully validated BS VI solutions for all types and models of four-wheelers before 2023.

Introducing technologies without proper validation and testing on Indian roads will raise questions on several safety issues -- such as car fires, which can endanger human lives. Moreover, BS VI norms will not make any significant improvement in the PM 2.5 emissions in cars as there is no change in particulate matter at BS VI level and only incremental 10 per cent reduction in HCVs. Therefore, it would be better to have a realistic timeline, Dasari said.