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MOT Special Notice: Smoke Meters


An MOT Special Notice was issued this month relating to issues surrounding Diesel smoke meter upgrades and annual assessments. 

The notice reminded MOT stations of the EU roadworthiness directive updates, which resulted in the need to upgrade or replace diesel smoke meters by 20 May 2018. The DVSA urged stations to check their equipment met the requirements and to stop testing if found not to be the case. 

It stated there had been a problem with some devices after upgrades, for example, the entry and use of a plate value to assess the test standard. Equipment manufacturers and the Garage Equipment Association (GEA) are investigating and resolving any issues. A list of DVSA-accepted equipment is available on the GEA website (within the technical library at If your diesel smoke meter doesn’t appear in the list, or if you have any questions about the upgrade, contact the GEA. 

The DVSA notice also reminded MOT testers that training and assessments must be successfully completed by Sunday 31 March 2019, and need to record their annual assessment certificate on their MOT testing service profile, as soon as possible. If you do not pass and record your assessment result by 31 March 2019, you’ll be suspended in the MOT testing service. 

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