Question

Euro 4 norm? ...... in a short defination plzz​

Answer 1

Answer:

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Petrol-powered vehicles are exempted from particulate matter (PM) standards through to the Euro 4 stage,

Answer 2

Euro 4 is the minimum standard for cars and vans driving in central London. ... The standard was brought in in January 2005 and concentrated on cleaning up emissions from diesel cars, especially reducing particulate matter and oxides of nitrogen...

@Ramanari12