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MOT Advisory Items 2026: What They Mean (Not a Fail)
An MOT advisory is a recorded item that did not cause a fail this year but is worth monitoring. The DVSA introduced the current three-category defect system (minor, major, dangerous) in May 2018. An advisory is the minor category. The vehicle passes; the item is noted on the pass certificate and on the public MOT history record.
DVSA Defect Categories (Since May 2018)
| Category | Result | Drive? | Meaning |
|---|---|---|---|
| Minor (advisory) | Pass | Yes, vehicle is roadworthy | An item that is not yet a defect but should be monitored. Will not cause a fail this year. |
| Major | Fail | Only to a pre-booked repair if previous MOT still valid | A defect that affects vehicle safety or has environmental impact. Must be rectified before the vehicle can be used on the road outside the exceptions above. |
| Dangerous | Fail | No, dangerous category vehicle cannot be driven on the road | A defect that poses a direct and immediate risk to road safety or to the environment. The vehicle must not be driven on a public road until the defect is rectified. |
What an Advisory Actually Means
An advisory is the tester saying: this item is within spec right now, but it is close enough to the threshold that you should plan to address it before the next test. The tester is not required to fail the vehicle on an advisory item; the law allows the item to remain in service as long as it meets the inspection threshold on test day.
The most common advisories sit in three buckets: wear items approaching their service-replacement point (brake pads, tyres, wiper blades), early-stage corrosion that is not yet structural, and components that are functional but showing a visible degradation pattern (shock absorbers, headlight aim, battery state).
Common MOT Advisory Examples
- Brake pads worn close to limit. Pad thickness near 1.5-2mm of remaining friction material. Replace at the next service interval.
- Tyre tread within 0.5mm of legal minimum. Tread between 1.6 and 2.1mm on Class 4 cars. Still legal but plan a replacement.
- Light corrosion in non-prescribed area. Surface rust on an area that is not load-bearing or structurally critical. Monitor for progression.
- Discharged or weak battery. Battery starts the vehicle but is showing reduced cranking. Replace before winter.
- Shock absorber leaking lightly. Visible weep but not heavy drip. Will deteriorate to a fail at the next test.
- Wiper blade smearing. Visibility is impaired in heavy rain but the blade still clears under normal conditions.
- Headlight aim borderline. Aim within tolerance but at the edge of the test range.
- Brake disc edge rust or ridging. Disc is functional but has surface ridging or rust on the outer edge.
When an Advisory Becomes a Fail Next Year
An advisory is a recorded observation, not a promise. The component continues to wear or deteriorate after the test. By the time the next MOT comes round 12 months later, an advisory item has typically either been replaced as part of routine maintenance, or it has progressed past the inspection threshold and become a major fail.
The cheapest move financially is to address advisory items before they fail. A brake-pad advisory this year is a pad-replacement job that costs £80-150 at a garage. The same pads worn through to the disc twelve months later is a pad and disc job at £200-350. The cost gradient is not trivial.
The same logic applies to tyres, corrosion, suspension and emissions: addressing the item at the advisory stage is cheaper than addressing it at the fail stage.
Advisories on the Public MOT History Record
Advisory items are recorded on the public DVSA MOT history record visible at the GOV.UK MOT history tool. Anyone with a vehicle's registration number can read the full history including advisories, pass and fail items from previous years.
For used-car buyers this is a useful signal: a long advisory trail on the same item year after year (for example, recurring corrosion advisories or recurring suspension advisories) tells you the previous owner has been deferring maintenance. See /check-mot-history for how to read the GOV.UK history record and what to look for.
Major or dangerous defect instead?
The full guide to what happens when the result is not a pass: defect categories, retest rules and your legal rights.
What Happens If You Fail