mechanic wrote:

dennis wrote:

mechanic wrote:

dennis wrote:

I had a diesel 10 years ago that had a cat and didn't emit much in the
way of NOx...

How would you know?

Because I had the reports from the tester.

Did they test for that 10yrs ago?

I thought for diesel cars, the MOT "fast pass" only tests smoke level,
not CO/NOx/HC levels?