Hello andymot - many thanks for your response.
I read about a transition period but, as you say, it's not as though the meaning is 100% clear. My tester may well be one who has misread things - I hope so!
The meaning I got from the text was that such vehicles (non-cat but used after 1/8/92) could be given the 'benefit of the doubt, if failing the new test' only in the period between the publication of the new standard (Feb 2018) and implementation of the new MoT Manual (May 2018), owing to the need to update exhaust gas analysis equipment in test centres with the data from the table in Annex 1 to the revised standard.
I quite accept that more reading, by me and perhaps others, is necessary but thought it worth putting my thoughts out for some discussion anyway.
Another thought - retrospective application of standards originally applied after 1996 to vehicles first used from 1 August 1992 seemed to me to go against the usual run of such rulings.
Last edited by terryg; 18/04/18 06:33 PM. Reason: addition
