Should we be concerned about our diesels

[Eeyore]

I'm not sure I've even seen any figures or an explanation... I know the public are thick but I'm sure most people have just been told "diesels are bad".

Also add to that there is a stigma with diesels of cheap running costs and in today's society I'm sure people are extremely willing to push anyone down who has a diesel. Got to gave petrol to be cool yo. One of us.. One of us...