My MOT station has a new piece of equipment for the smoke test. I took a 13 year old diesel last week for its annual MOT and he put it on the new machine so it was interesting to see just what was going on
According to the MOT tester the limit for my 13 year old non DPF turbo diesel vehicle is 1.5m-1 (but looking at the DVLA website (see second image below) it seems that I should be allowed 3.0m-1).
However the actual reading came as a surprise and upon further research it seems my old diesel would pass the 2014 smoke test of 0.7m-1 as it came in at 0.38m-1 almost half the maximum allowed limit for newer diesel engines
The annoying thing for me is even though I have a clean vehicle, it is going to be lumped into the category of being banned from city centres in a few years time, yet a 2014 vehicle spewing out 0.7m-1 will be allowed in...
This was my test results
This is from the DVLA website giving the maximum readings according to vehicle age
