An advisory is one of the most misunderstood parts of an MOT report. Some drivers panic and rush to fix every single one immediately, spending money on things that could genuinely wait. Others dismiss them entirely since the car technically passed, only to find the same item has become an outright fail by the following year. Neither response is quite right, and understanding what an advisory actually represents helps you respond appropriately to each one.
What an advisory actually is
An advisory is a note from the tester flagging something that doesn’t currently meet the threshold for a fail, but is showing signs of wear or deterioration worth monitoring. It’s effectively an early warning, based on the tester’s professional judgement that the item is likely to continue wearing and could become a genuine problem before the car’s next test is due. Because the car has technically met the legal minimum standard on the day, an advisory doesn’t affect the pass result, and the car remains fully legal to drive.
Why advisories exist at all
The MOT is designed around a specific pass or fail threshold, but wear on a car is a gradual, continuous process rather than something that flips suddenly from fine to failed. Advisories exist to bridge that gap, giving drivers useful information about developing wear rather than leaving them with no insight until the following year’s test reveals a fail. In this sense, an advisory is genuinely valuable information freely provided as part of the test, rather than something to be alarmed by or dismissed.
How to judge urgency
Not every advisory carries the same level of urgency, and reading the specific wording matters. An advisory noting tyre tread is “close to the legal limit” is worth acting on sooner than one noting “slight corrosion, no further action needed” on a non-structural panel. Safety-critical systems, including brakes, tyres, and steering, generally warrant quicker attention when flagged than cosmetic or non-structural items, even when both are technically classified as advisories rather than fails.
- Safety-critical advisories (brakes, tyres, steering, suspension): worth addressing promptly
- Advisories that specifically mention approaching a legal limit: worth acting on before it’s reached
- Cosmetic or minor corrosion notes on non-structural areas: reasonable to monitor
- Repeated advisories on the same item across multiple years: worth investigating properly rather than continuing to defer
- Anything you’re genuinely unsure about: worth a second opinion from an independent mechanic
What happens if you ignore an advisory
Ignoring an advisory doesn’t carry any immediate legal consequence, since the car has passed and remains legal to drive. The practical risk is that the underlying wear continues, and what could have been a straightforward, affordable fix while it was still an advisory can develop into a full fail by the following year, sometimes accompanied by additional wear on related components that had to compensate in the meantime. This is particularly true for items like tyres and brakes, where the progression from advisory to fail can happen well within a twelve-month window depending on how the car is used.
Getting a second opinion
If you’re unsure whether an advisory needs immediate attention, it’s entirely reasonable to get an independent assessment rather than relying solely on the brief note on the test report. A mechanic can physically inspect the specific item flagged, give you a realistic sense of how much life it likely has left, and help you decide whether to act now, plan for a fix in the coming months, or simply monitor it going forward. This is particularly worth doing for anything relating to brakes, tyres, suspension or steering, given how directly these affect safety.
Advisories and resale value
A car with a handful of sensible, addressed advisories generally presents better to a buyer than one with the same advisory appearing unaddressed across several consecutive years, since the latter suggests an owner who’s been deferring maintenance rather than keeping on top of it. Buyers checking MOT history before purchase, as covered in other guides, will see this pattern clearly, and it’s worth bearing in mind that how you handle advisories today can genuinely affect how easy the car is to sell honestly and confidently later.
A sensible approach to advisories
Read every advisory properly rather than skimming past it once you’ve seen the word “pass” at the top of the certificate. Prioritise anything safety-critical or close to a legal threshold, get a second opinion where you’re unsure, and don’t assume every advisory needs immediate action, since plenty are genuinely fine to monitor for a while. A full 50-point health check is a useful way to get a proper independent view of exactly where an advisory sits on that spectrum, giving you the confidence to either act promptly or reasonably wait, rather than guessing. You can read more about how the DVSA defines and classifies advisories in gov.uk’s guide to MOT checks.
How advisories differ between vehicle types
The kind of advisories a car tends to accumulate often reflects its age, mileage and how it’s used. A newer car might see the occasional tyre or lighting advisory, while an older vehicle is more likely to pick up advisories around corrosion, suspension wear, or exhaust condition as parts genuinely age. Vehicles used mainly for short urban trips can develop different advisory patterns to those used mostly on motorways, since the type of wear each driving style produces varies. Understanding what’s typical for your specific car’s age and use case helps you judge whether a given advisory is a normal, expected part of ownership or something worth investigating more closely as potentially unusual.
Building advisories into your annual maintenance planning
Rather than treating each MOT as an isolated event, it’s worth using the advisory list as a rough planning tool for the year ahead. If tyres are flagged as approaching the legal limit, budget for replacement in the coming months rather than waiting for the next test to force the issue. If suspension components are noted as showing early wear, factor a proper inspection into your plans well before the following year’s certificate is due. This kind of forward planning, using the MOT as a genuine source of maintenance intelligence rather than just an annual hurdle, spreads costs more predictably across the year and avoids the scenario of several advisories all reaching fail status simultaneously at the worst possible moment.
Why some drivers overreact and others underreact
It’s worth being honest that reactions to advisories tend to fall into two unhelpful extremes. Some drivers, particularly those less familiar with car maintenance, treat every advisory as an emergency and rush into unnecessary expense on items that genuinely had months of safe life left. Others swing the opposite way, dismissing every advisory as garage sales talk designed to extract more money, and end up ignoring genuinely important early warnings. Neither extreme serves you well. The more useful approach sits in the middle: take every advisory seriously enough to understand what it means specifically for your car, then make a genuinely informed decision about timing based on that understanding rather than a blanket policy in either direction.
Trusting an independent assessment over assumptions
Because advisories exist in a genuine grey area between fine and failing, and because interpreting them well requires understanding both the specific component and how your particular car is used, this is exactly the kind of area where an independent, trustworthy mechanic adds real value beyond what the brief wording on a certificate can convey. A proper assessment considers not just what’s written on the report but the fuller context of your car’s history, usage pattern and overall condition, giving you a genuinely informed basis for deciding what to prioritise and when, rather than either panicking or dismissing what the test has flagged.
Advisories as part of a longer ownership story
Every car accumulates a story over its life, told partly through its MOT history and the pattern of advisories that appear, get addressed, and sometimes recur. Reading that story properly, rather than treating each year’s certificate as a standalone document disconnected from the last, gives you a genuinely useful long-term view of how your car is ageing and what kind of ownership costs to expect going forward. This perspective is worth cultivating regardless of whether you plan to keep the car for years to come or sell it relatively soon, since either way, understanding your car’s real condition beats guessing.
How garages decide what counts as an advisory
Testers work from the DVSA’s national inspection manual, which sets out defined thresholds for most items, meaning the decision to flag something as an advisory rather than a fail isn’t left purely to individual judgement. That said, some assessments, particularly around general condition or early-stage wear, do involve a degree of professional interpretation, which is part of why the specific wording used to describe an advisory can vary slightly between test centres even when the underlying issue is broadly the same. This standardisation is also why getting a second opinion on an advisory from a different, independent mechanic is a genuinely reasonable thing to do if you want extra confidence before deciding how urgently to act.
Turning advisories into a practical maintenance schedule
One of the most useful things you can do with a list of advisories is turn it directly into a rough to-do list for the months ahead, ranked by urgency and cost. Safety-critical items go to the top, items close to a legal threshold follow, and purely cosmetic notes go to the bottom as things to simply keep an eye on. Reviewing this list every few months, rather than only at the next MOT, helps you stay ahead of wear rather than being surprised by how much has progressed by the time the next certificate is issued.
How advisory patterns differ by component type
Some components tend to generate advisories that stay stable for a long time before finally progressing to a fail, tyres being a good example, since tread wear is generally steady and predictable. Others, particularly anything involving corrosion, can progress more unpredictably depending on how much further exposure to salt and moisture the car experiences over the following months. Recognising which category a given advisory falls into helps you judge whether it’s the kind of thing that’s safe to monitor casually or one that deserves a firmer date in the diary for a proper follow-up check.
Final thought on treating advisories as useful information
At its core, an advisory is simply information, freely provided by a trained professional, about where your car genuinely stands. Treating it as neither an emergency nor something to dismiss, but as a useful, actionable data point about your car’s condition, is the mindset that serves most owners best over the years they own a vehicle.
Why the classification matters more than the label alone
It’s worth remembering that not every item worded similarly carries the same classification behind it, and two seemingly similar notes can differ meaningfully in urgency depending on the exact wording and the specific component involved. Reading the classification carefully, rather than pattern-matching against a previous year’s advisory that sounded similar, avoids either overreacting to something minor or underestimating something that genuinely deserves prompt attention.
When to simply ask your mechanic directly
If you’ve read an advisory a few times and are still genuinely unsure what it means for your car in practical terms, the simplest and most reliable next step is to ask your mechanic directly rather than trying to interpret technical wording alone. A short conversation, ideally with the car in front of you so the specific component can be pointed out and explained, almost always clears up any confusion far more effectively than reading the same sentence on a certificate repeatedly and guessing at what it implies. There is no such thing as a silly question when it comes to understanding exactly what a specific advisory means for the car you drive every single day, and a good mechanic will always be happy to explain it properly rather than rushing through the paperwork.
Source: gov.uk's guide to MOT checks
Frequently asked questions
Is a car with advisories still legal to drive?
Yes, an advisory does not fail the car, and a vehicle with advisories noted is fully legal to drive until its next MOT is due.
Do advisories automatically become fails the next year?
Not automatically, but many do progress if left unaddressed, since the underlying wear that caused the advisory typically continues over the following year.
Can I get a second opinion on an advisory?
Yes, it is entirely reasonable to get an independent mechanic to assess an advisory before deciding whether and when to act on it.
Should I always fix every advisory immediately?
Not necessarily, since some are genuinely minor and can be monitored, but each one is worth understanding properly rather than dismissed automatically.
Do advisories affect insurance or resale value?
They do not affect insurance directly, but a pattern of unaddressed advisories can affect how a buyer or dealer perceives a car when it comes to selling it on.