DVSA Vehicle Standards Assessors have picked up on a small number of heavy vehicles being presented for annual test with some form of tampering carried out to the exhaust emissions data recorded on the vehicle manufacturer’s plate.
Vehicles that are part of a well-managed and maintained fleet should have little difficulty passing the test. Indeed, many operators take pride in achieving a 100% pass rate. And any good operator should be happy that faults picked up on the test be corrected as quickly as possible.
But DVSA have noticed that some operators aren’t like that.
The MOT requires the exhaust emissions to be tested to the manufacturer’s type approval values. If this is not available, the vehicle could be tested to an incorrect standard.
Further information:
https://movingon.blog.gov.uk/2021/12/08/emissions-value-tampering-on-the-manufacturers-plate/