Approved LED bulbs in halogen headlamps can pass the MOT from 14 October
From 14 October 2026, MOT testers must accept approved LED replacement bulbs in compatible halogen headlamps, DVSA announced in a special notice on 13 October.
The bulb has to be ECE approved, and its approval sticker has to be fixed to the car.
DVSA, the Driver and Vehicle Standards Agency, runs the MOT in Great Britain. Its notice, MOT special notice 05-26, changes the MOT inspection manual for cars and passenger vehicles on 14 October.
What the rule was until now
The current manual bans the conversion outright. Section 4.1.4 says halogen headlamp units on vehicles first used on or after 1 April 1986 "must not be converted" to use HID or LED bulbs.
Where that had been done, the manual told testers to fail the headlamp. The defect is "light source and lamp not compatible", and it's a major.
The manual was last updated on 1 June 2026, and section 4.1.4 changes on 14 October.
So the shift is real. An approved LED bulb in a halogen unit stops being an automatic fail, if it carries the right sticker.
The headlamp still has to pass the other headlamp checks, such as beam aim.
What the tester actually checks
To decide whether the bulb is approved, the tester has one thing to check: the sticker. DVSA's notice says the tester "only" needs to check that the approval sticker is there.
They don't have to look up the ECE approval number. The notice says testers don't need to check the number, the markings or the manufacturer against any database, paperwork or records.
The sticker must be permanently fixed to the vehicle, somewhere easy to see during the test.
What the approval sticker must show
DVSA lists six things the sticker must carry:
- the category, for example H11 LEDr
- the variant
- the rated voltage
- the ECE approval number
- the manufacturer's name
- a security feature, such as a hologram
Size, shape and colour can differ between manufacturers. DVSA says any design is fine so long as it carries that information and the security feature.
An example sticker will appear in section 4.1.4 of the manual from 14 October.
When an LED bulb still fails
The notice lists four cases. The tester fails the headlamp if an LED replacement bulb is fitted and:
- there's no sticker
- the sticker can't be read
- the sticker looks tampered with
- the sticker clearly doesn't match the bulb fitted
The defect recorded is the same major as before: "light source and lamp not compatible". A major defect means a fail.
Lighting faults already top our list of common MOT failures. This change removes one reason, not the others, and the rest of our MOT and tax guides cover them.
Three things the change doesn't cover
DVSA's notice lists three exclusions.
Class 1 and class 2 motorcycles, because the change applies to classes 3, 4, 5 and 7 only.
Halogen units converted to HID bulbs. HID means high intensity discharge, and the ban on those conversions is unchanged.
Full LED headlamp unit replacements. These aren't covered by the conversion rule, and the current manual says a complete unit built with LED light sources isn't failed for incompatibility.
Our MOT checklist covers what else the tester looks at on lights.
Which vehicles count as class 3, 4, 5 and 7
Most readers will be in class 4. Gov.uk's MOT fees table puts cars with up to eight passenger seats in it, along with motor caravans, taxis, quads and goods vehicles up to 3,000kg, among others.
Class 3 is three-wheeled vehicles up to 450kg unladen. Class 5 is private passenger vehicles, ambulances and motor caravans with 13 or more passenger seats, plus playbuses.
Class 7 is goods vehicles over 3,000kg and up to 3,500kg, plus zero emission goods vehicles between 3,501kg and 4,250kg. Classes 1 and 2 are motorcycles, up to 200cc and over 200cc.
Checking a car before you buy? Our free car check shows its full MOT record, including past headlamp defects, from the number plate.
Or run our free MOT check to see every test result on record and the reasons for any fail.
What the notice doesn't say
It's an MOT notice. It doesn't say whether LED replacement bulbs are legal to use on the road or anything about insurance.
We haven't checked either here, so don't read a pass as an answer to those questions.
The notice doesn't say why the rule changed. A DVSA email bulletin sent on 8 October does: testers had no practical way to tell whether a fitted LED bulb was approved, so they failed it.
Neither the notice nor that bulletin says how to get a sticker if your bulbs didn't come with one.
Northern Ireland runs its own MOT scheme, and gov.uk says the rules and processes there are different. The notice doesn't mention it.
Common questions
Will LED headlight bulbs fail an MOT?
Not for being LED, from 14 October 2026, if they're ECE approved LED replacement bulbs in a halogen headlamp. The approval sticker must be fixed to the car and easy to read. Before that date the manual's rule is a fail for any LED conversion of a halogen unit on a car first used on or after 1 April 1986.
What does the MOT tester check on an LED replacement bulb?
To confirm the bulb is approved, only the approval sticker. DVSA says testers don't need to check the approval number or manufacturer against any database or paperwork. The headlamp fails if the sticker is missing, unreadable, tampered with, or clearly doesn't match the bulb.
Does this apply to motorcycles?
No. DVSA's notice excludes class 1 and class 2 motorcycles. It covers classes 3, 4, 5 and 7 only, which includes ordinary cars.
Does this apply to HID conversion kits?
No. A halogen headlamp converted to HID bulbs is still a fail on a vehicle first used on or after 1 April 1986. The notice only changes the rule for approved LED replacement bulbs.
Are LED replacement bulbs legal to use on the road?
The MOT notice doesn't say. It covers the MOT test only, and we haven't checked the road-use rules or insurance position in this article.