I saw this, but I was disheartened when I was told by a mechanic not long back that this too is seen as a bit of a joke - in that the cars are tested at idle an

I saw this, but I was disheartened when I was told by a mechanic not long back that this too is seen as a bit of a joke - in that the cars are tested at idle and the DPF check is cosmetic. Hoping for sanity, though.