MOT defects: On or after 01/07/2008

Noise, emissions and leaks

9 defects: 1 dangerous, 8 major. 1 can be given as an advisory instead.

Certificate wording	Severity	As an advisory	Inspection manual
On or after 01/07/2008 emits excessive smoke or vapour likely to obscure the vision of other road users	dangerous	emits excessive smoke or vapour but not likely to obscure the vision of other road users	Exhaust emits excessive smoke or vapour of any colour to an extent likely to obscure the vision of other road users.
On or after 01/07/2008 emissions likely to be affected by an exhaust leak	major	None	An induction or exhaust leak that could affect emissions levels
On or after 01/07/2008 emissions likely to be affected by an induction leak	major	None	An induction or exhaust leak that could affect emissions levels
On or after 01/07/2008 diesel particulate filter shows evidence of tampering.	major	None	Evidence that the diesel particulate filter has been tampered with
On or after 01/07/2008 emissions exceed manufacturer's specified limit	major	None	Smoke opacity levels exceed the manufacturer's specified limit
On or after 01/07/2008 emissions exceed default limit of 1.5m-1	major	None	Smoke opacity levels exceed default limit
On or after 01/07/2008 on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour	major	None	Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour
On or after 01/07/2008 emissions test aborted because smoke levels are significantly in excess of the specified limit values	major	None	Emissions test aborted because smoke levels are significantly in excess of the specified limit values
On or after 01/07/2008 emissions test not completed because smoke levels are significantly in excess of the specified limit values	major	None	Emissions test not completed because smoke levels are significantly in excess of the specified limit values

Pre-2018 names for this part

On or after 01/07/2008 (3)

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Contains public sector information from the DVSA licensed under the Open Government Licence v3.0.