referring to outdated government advice that diesels were less polluting than petrol cars – a policy rapidly U-turned upon when it was realised the precise opposite is true.
Seems this might be another piece of misinformation:
Old banger v diesel: Which is more toxic?
Basically, it would seem that in order to pass the new Euro emissions tests, the engine is being tuned such that in normal usage it can emit significantly more emissions than an older engine not tuned to pass the test...
Biting the hand that feeds IT
