Small update
I have just returned from technical control and unfortunately I have a red card because of exceeding the lambda values. So I have to go back within 15 days but it will be impossible because the Albert garage
will close until September 29. Really this is the last thing I could have thought with the plus four .
I had the same issue with my Plus Four MY22 I posted on another thread. The car went to the MOT cold essentially. It failed. Re-booked the MOT and drove in a lively manner for 45 minutes for the new test. It passed with no problems. I was told by my dealer that the car needs to be properly warmed up and indeed, if it's not done many journeys, then a good blast to clear it out.
Worked for me but I understand your frustration. I had to wait 2 weeks to re-book my MOT.