MOT Rule Change: LED Headlamp Bulbs Now Pass the Test
From today - 14 October 2026 - a significant change to the MOT test comes into force. The Driver and Vehicle Standards Agency (DVSA) will now allow approved LED replacement (LEDr) bulbs fitted in halogen headlamps to pass the MOT, ending a strict five-year stance that saw aftermarket LED conversions automatically failed.
The change was announced on 8 October in MOT special notice 05-26, published on GOV.UK, and takes effect in the MOT testing manual from today.
What exactly has changed
Until now, any LED bulb fitted into a halogen headlamp unit on a vehicle first used on or after 1 April 1986 was a guaranteed MOT failure. Testers recorded a Major defect for "light source and lamp not compatible" under Section 4.14 of the inspection manual - no matter how well the beam was aimed.
From 14 October, that blanket rejection is lifted for one specific category: LED replacement (LEDr) bulbs that carry full ECE approval (UN ECE Regulation 37), fitted in compatible halogen headlamp units. The revision applies to class 3 (tricycles), class 4 (cars), class 5 (larger passenger vehicles) and class 7 (goods vehicles).
The sticker is the key
The DVSA's solution for identifying approved bulbs at the test is simple: a secure approval sticker. Manufacturers of approved LEDr products now include a tamper-evident sticker in the retail packaging, and the vehicle must permanently display it where the tester can easily see it - the engine bay is the suggested spot.
The sticker must carry the bulb category (for example, H11 LEDr), variant, rated voltage, the ECE approval number, the manufacturer's name, and a security feature such as a hologram. Manufacturers can design their stickers differently as long as all the required information and security features are present.
During the test, the garage only needs to check that the sticker is present, readable, untampered and matches the fitted bulb. Testers do not need to look up approval numbers against any database or documentation.
What still fails
The tester must fail the headlamp if there is no sticker, if the sticker cannot be read, if it looks tampered with, or if it does not match the bulb fitted. Fit certified LEDr bulbs but throw away the packaging without applying the label, and the vehicle fails - just as before.
The change is narrow. Non-approved LED conversions continue to fail. HID (xenon) conversions remain banned. The revised rules do not cover class 1 and 2 motorcycles, and they do not apply to full LED headlamp unit replacements - only to replacement bulbs in existing halogen units.
Why the change happened
Aftermarket LED bulbs have been one of the most confusing areas of the MOT for years. Products marketed as "direct halogen replacements" vary enormously in design and approval status, and testers had no practical way to tell an approved bulb from an unapproved one. The DVSA has acknowledged that this practical difficulty was part of what drove the old blanket-fail approach.
"ECE-approved LED light sources will be sold with an approval sticker, which must be applied to the vehicle for MOT testers to identify whether an approved LED light source is fitted," said Grant Thunder, the DVSA's head of MOT. "This will make sure that those fitted with non-approved LED light sources continue to fail their MOT test."
What drivers should do
If you are considering an LED upgrade for halogen headlamps, the new rule changes the maths - but only if you buy properly approved products. Look for LEDr bulbs with genuine ECE approval markings and keep the packaging until the approval sticker is permanently applied to the vehicle. Cheap unmarked bulbs sold online will still fail the test, exactly as they did before.
If you already have LED conversions fitted, check whether your bulbs are ECE-approved products. If they are, fit the approval sticker before your next MOT; if not, the old rules apply and the headlamp will fail. For the rest of what testers check, our UK MOT guide (https://drivepedia.site/guides) covers costs and common failures.
Sources: GOV.UK - "MOT special notice 05-26" (8 October 2026); The Scottish Sun and The Sun - "New MOT rule change is being rolled out by DVSA tomorrow" (13 October 2026); motester.co.uk; garagematters.uk; autorepairfocus.com; IAAF/OSRAM.
Photo: Marek Slusarczyk (Tupungato) / Wikimedia Commons (CC BY 3.0) - replacing a halogen headlamp bulb on a Toyota Auris.
FREQUENTLY ASKED QUESTIONS
Can I put LED bulbs in my halogen headlights now?
Only approved LED replacement (LEDr) bulbs with ECE approval, and only if your vehicle displays the manufacturer's secure approval sticker. Non-approved bulbs still fail the MOT.
Which vehicles does the new MOT rule cover?
Classes 3 (tricycles), 4 (cars), 5 (larger passenger vehicles) and 7 (goods vehicles). Motorcycles (classes 1 and 2) are excluded.
What does the approval sticker need to show?
Bulb category, variant, rated voltage, the ECE approval number, the manufacturer's name and a security feature such as a hologram. It must be permanently affixed where the tester can see it - the engine bay is suggested.
What happens if I lose the sticker, and are HID conversions allowed?
The vehicle fails if there is no sticker, it cannot be read, it looks tampered with, or it does not match the fitted bulb. HID conversions remain banned, and the rules do not cover full LED headlamp unit replacements.