Bonefishblues wrote:I had an MOT at a Council Bay a couple of weeks ago. No diagnostics (as in, plugged into the OBD port) were used, nor am I aware that it's part of the test?
Are you perhaps referring to the readout from the rolling road, which is calibrated?
It's not necessarily part of the test but many (most?) technicians use diagnostic & test tools as part of the MOT, either manufacturer ones, or multi-purpose. They can upload certificates from test tools to the MOT Service database.
I had understood that OBDII testing was going to be included in the last update (May 2018?), to bring the UK in line with Europe wide standards, along with WLTP testing standards, but maybe that hasn't actually happened. I have to admit that I have not followed it recently. If I get a chance later I will do a little research.
The only person I know who does MOT Testing uses a diagnostic computer for it. I used to know quite a few people who did MOT testing, but I havenæt kept in touch with most of them since moving away.