MOT testing approved equipment: exhaust gas analysers (non-catalyst vehicles)

A list of acceptable exhaust gas analysis equipment for testing non-catalyst vehicles suitable and approved for use in MOT testing.


Section G: exhaust gas analysers (non-catalyst vehicles)

This file may not be suitable for users of assistive technology. Request an accessible format.

If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email Please tell us what format you need. It will help us if you say what assistive technology you use.


This document lists the types of non-catalyst vehicle exhaust gas analysers approved for use under the MOT testing scheme by DVSA.

All of the listed equipment must be kept in good working order and calibrated properly in order to be used for MOT testing.

Please make sure you read the notes on the document before searching for any equipment.

Published 30 August 2013
Last updated 30 June 2016 + show all updates
  1. The latest version of the list has been published.
  2. Updated with the latest list of approved equipment.
  3. Published an updated version of the equipment list.
  4. First published.