On 10/10/2019 19:07, Dave Plowman (News) wrote:
In article ,
Jethro_uk wrote:
If it's modern it will have sensors either side of the cat. To make
sure the cat is working.

I was thinking of the machine the MOT station use ...

Think it is a four gas analyser. Rather more sophisticated than the O2
sensors fitted to the exhaust.


Not much use if the MOT tester is dodgy.
Still waiting for the details so the dodgy tester can be struck off.
Doing so could get hundreds of unroadworthy cars off the roads and save
many lives.