LED headlight bulbs and the MOT: what changed on 14 October and what to check

The short answer

Until this month, an LED bulb fitted into a headlamp built for a halogen bulb was a reason to fail the MOT. The DVSA changed that with special notice 05-26, published on 13 October 2026, and the inspection manual was updated on 14 October 2026. From that date a tester must accept an LED replacement bulb in a halogen headlamp if two things are true: the bulb is an ECE-approved replacement for that lamp, and the car carries the manufacturer's approval sticker for it, fixed where the tester can see it.

If you have fitted LED bulbs, or are about to, the sticker is the whole test. No sticker, or a sticker that cannot be read, looks tampered with or does not match the bulb, and the headlamp fails with a major defect.

What the notice actually says

The notice uses two terms worth knowing. ECE approval is the international type approval for vehicle lighting; an approved LED replacement bulb has been tested as a replacement for a specific halogen bulb type in a specific kind of lamp. LEDr is the category name for such a bulb, written on the sticker after the bulb type, for example H11 LEDr.

The sticker must be permanently fixed to the car, easy to see during the test, and must show the category, the variant, the rated voltage, the ECE approval number and the manufacturer's name, with a security feature such as a hologram. Designs differ in size, shape and colour. The tester checks that the sticker is present and matches the bulb. They do not check the approval number against any database, and they are not expected to remove covers or bulbs to look.

The rule covers class 3, 4, 5 and 7 vehicles, which includes every car, with their original halogen headlamp units. It does not cover motorcycles, halogen units converted to HID bulbs, or complete replacement headlamp units that are LED throughout. Those are judged under the rules that already applied; the manual still says a halogen unit on a car first used on or after 1 April 1986 must not be converted to HID.

Why it matters this week

The clocks went back on Sunday, so the evening drive home is now in the dark and headlamps are doing a job they were spared all summer. That is when drivers notice a dim or yellowed beam and go looking for a brighter bulb. It is also when badly aimed or mismatched bulbs dazzle everyone coming the other way. The MOT rule on bulbs has changed; the rule on aim has not. Headlamp aim outside the limits, a beam image that is obviously wrong, or aim that cannot be tested are each still a major defect under section 4 of the inspection manual. A bulb that is approved but sits wrong in the reflector will still fail on the beam.

Our piece on light faults by car age shows how often dipped beams, aim and dead side lights are recorded as fails at each age; those figures are not repeated here.

What to check before your next MOT

1. Find the sticker. If you had LED bulbs fitted, the fitter should have applied the manufacturer's approval sticker somewhere visible under the bonnet or on the lamp. If you fitted them yourself and there was no sticker in the box, the bulbs are not an approved replacement for the test, whatever the packaging claims.
2. Match the sticker to the bulb. The category on the sticker, for example H7 LEDr, must be the bulb type your car takes. A sticker for a different type counts as not matching.
3. Check the beam, not just the brightness. Park facing a wall or garage door on level ground and look at the cut-off line on dipped beam. A flat, even edge that is lower on the right is roughly what the tester is looking for; a scattered or lopsided pattern will fail on aim even with an approved bulb. Have the aim set properly if in doubt.
4. Leave the rest alone. The notice does not make HID conversions or unapproved complete LED units acceptable. If your car's lamps were converted that way, the position has not changed.
5. Your MOT history. The free GOV.UK service shows whether a headlamp item failed or was advised at a past test, which tells you whether the lamp itself has a history of aim or lens problems.

What this does not mean

This is the MOT rule. Whether a particular bulb is lawful to use on the road is a separate question answered by the lighting regulations, not by the test, and this article does not give a view on it. An MOT pass says the car met the test standard on the day. The notice also does not say that LED bulbs are better or safer; it says that approved ones with a sticker are no longer a fail. If you are unsure what is fitted to your car, ask the garage to show you the sticker. This article is general information based on the GOV.UK pages read on 27 October 2026, not legal advice.

Sources and method

This article contains no MOT statistics. The rule is quoted from the DVSA special notice and the inspection manual on GOV.UK as they read on 27 October 2026. The MOT reliance notice below applies to the MOT history check the article recommends and to the linked data pieces.

• GOV.UK: MOT special notice 05-26, approved LED replacement bulbs in halogen headlamps
• GOV.UK: MOT inspection manual, section 4, lamps, reflectors and electrical equipment
• GOV.UK: Check the MOT history of a vehicle

This article is general information drawn from published test records. It is not professional, mechanical or legal advice, and an MOT pass or a clean MOT history does not guarantee that a car is roadworthy today. If you are unsure about a car, have it inspected by a qualified mechanic. You can check any vehicle's MOT history free on the official GOV.UK MOT history service.