Guidance

MOT special notice 01-21: headlamp conversions

Published 19 March 2021

This guidance was withdrawn on

This guidance has been withdrawn because it is out of date. You can find the latest up to date information in the MOT inspection manual: cars and passenger vehicles and MOT inspection manual: motorcycles.

Applies to England, Scotland and Wales

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This publication is available at https://www.gov.uk/government/publications/special-notice-01-21-headlamp-conversions/mot-special-notice-01-21-headlamp-conversions

1. About headlamp conversions

Section 4.1.4 of the current MOT inspection manuals for both motorcycles and cars and passenger vehicles states ‘Existing halogen headlamp units should not be converted to be used with high intensity discharge (HID) or light emitting diode (LED) bulbs. If such a conversion has been done, you must fail the headlamp.’

2. Changes to current rules

From 22 March 2021, we’re changing these rules so that not all motorcycles and vehicles will fail the MOT test if their halogen headlamp units have been converted to be used with HID or LED bulbs.

Class 1 and 2 motorcycles

Class 1 and 2 motorcycles must not be failed for the defect ‘Light source and lamp not compatible’.

Headlamps must comply with all other requirements of the test and headlamp aim.

The motorcycle inspection manual will be updated shortly, and the ability to select the defect within the MOT testing service will be removed.

Class 3,4,5 and 7 vehicles

For class 3,4,5 and 7 vehicles, the defect ‘Light source and lamp not compatible’ only applies to vehicles first used on or after 1 April 1986.

Should a vehicle be presented for an MOT test with conversions before 1 April 1986 they must not be failed with immediate effect.

Vehicles presented with converted halogen headlamp units first used on or after 1 April 1986 will continue to be failed.

Headlamps must comply with all other requirements of the test and headlamp aim.

The cars and passenger vehicles inspection manual will be updated shortly.

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