Most Polluting Cars Revealed Lets start with knowing the emission norms in India. Currently India is following the Bharat Stage (BS) IV norms. Bharat Stage Norms exactly the same as Euro norms. The differences lie essentially in environmental and geographical needs, even though the emission standards are exactly the same. For instance, Euro-III is tested at sub-zero temperatures in European countries. In India, where the average annual temperature ranges between 24 and 28 °C, the test is done away with. Another major distinction is in the maximum speed at which the vehicle is tested. A speed of 90 km/h is stipulated for BS-III, whereas it is 120 km/h for Euro-III, keeping emission limits the same in both cases. In addition to limits, test procedure has certain finer points too. For instance, the mass emission test measurements done in g/km on a chassis dynamometer requires a loading of 100 kg weight in addition to unloaded car weight in Europe. In Indi...
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