But the way to deal with that is by ensuring the cleanliness of new vehicles - older ones will soon fall out of the system anyway, without punishing the innocent owners who followed government advice.
If it is really necessary to clean up the air rapidly and reduce the number of diesels immediately to do so, then having been given the wrong advice, owners should be given enough money to scrap their vehicles that they can afford to replace them with an equivalent petrol car at no cost to themselves.
You cannot claim anti-social behaviour when drivers neding transport were deliberately encouraged by government to go diesel.
SteveW