Vital data on particulate emissions from diesel car models is missing in the data shared with us: Tata Motor has not shared data on particulate emissions from diesel cars, which is the most serious public health concern in diesel vehicles. There cannot also be any data on particulate emissions from petrol and CNG/LPG cars. As the PM emissions from petrol and gaseous fuel cars are very negligible these are not even regulated under the current European regulations or any other set of regulations round the world. This is why normally particulate emissions from petrol, CNG and LPG cars are not even tested. Only in the future the PM emissions from petrol engines that have the gasoline direct injection system will qualify for PM emissions.
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