colinm
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Not that long ago us old gits were being told by the same politicians to buy diesel because they are better for the environment. Dash for diesel we were all told. Modern diesel cars are much cleaner than older models. Why not do what they do in Europe and allow newer vehicles and ban older vehicles and buses.
Here's why.
One thing the 'VW scandal' threw up was the that in real world tests VW weren't to bad, many others (i.e. those using Fiat engines) where apaling.However for diesel vehicles, even the best manufacturer group had Euro 6 NO2 emissions of more than twice the type-approval limit, and all other manufacturer groups were at least four times the type-approval limit. Four manufacturer groups had average emissions of more than 12 times the type-approval limit.