[ThomasG]

And yet theres one more thing that just popped into my head..

any car registered after 1/01/14 they said.
so technically nothing older than 4 years.
as a matter of fact- anything between 2 days and 4 years old
so still under guarantee?
me thinks they arent trying to slap common road user
they want to pierce companies that claimed this and this emissions level for their new at the time cars, and now will be expected to make it happen.

or replace car-still under guarantee, yes? failed MOT, yes? then fix or replace, please