Amidst a situation where the Apex court has banned the registration of diesel passenger vehicles and SUVs in the National Capital Region until March 31, 2016, with an engine displacement capacity of more than 2000cc, the Society of Automobile Manufacturers (SIAM) has hailed the progression to BS V emission norms in 2019. SIAM has welcomed the government’s decision to move over to BS V emission norms by 2019. Vinod Dasari, President, SIAM expressed that the upgradation to BS V norms would reduce the pollution levels from the four-wheeler industry by 80 per cent in terms of 2.5 ppm for HCV and 60 per cent in terms of NOx respectively. We are happy that SIAM’s recommendation to advance the BS V timeline to 2019 has been accepted by the government. However, in order to switch over to BS V norms, the requisite 10 ppm Sulphur BS V fuel will have to be introduced by the oil companies by 2019 across India, before the newer vehicular technology gets introduced. A word of caution, Dasari mentioned that incompatibility of the vehicle and fuel could make it impossible to meet higher emission norms. In contrast, SIAM is known to have highlighted the challenges of advancing the implementation of BS VI norms from the AFP Committee recommended date of April 2024, to year 2021- 22 as proposed by the government.