Does an advisory mean my car failed?

No. An advisory is only issued on a car that passed. It is a note that something is beginning to wear and should be watched, not a reason for failure.

Do I legally have to fix an advisory?

Not immediately. An advisory does not stop you driving or invalidate your certificate. However, if the part deteriorates it can become a fail, and letting it worsen could make the car unroadworthy, which is an offence.

How soon should I act on an advisory?

There is no fixed deadline, but the sensible approach is to have it looked at soon rather than leaving it until the next test. Some advisories are years from being a problem, others are close to failing.

Will an advisory show up when I sell the car?

Yes. Advisories are recorded on the public MOT history, so a buyer checking the record will see them. Dealing with them promptly keeps the history clean.

What is an MOT advisory?

You collect your car, the MOT has passed, and then you notice a line on the certificate flagging something the tester spotted. That is an advisory, and it puts a lot of drivers on edge for no reason. The car passed. An advisory is not a fault that stops you driving away. It is the tester quietly tapping you on the shoulder to say that a part is beginning to wear and would be worth keeping an eye on.

Pass, fail and everything in between

Since 2018 the MOT has grouped what the tester finds into clear categories, and understanding them takes the mystery out of your certificate. A car can pass with nothing at all, pass with minor faults or advisories noted, or fail because of a major or dangerous fault. An advisory sits firmly on the pass side of that line.

The fault categories explained

Here is how the categories compare, from a clean bill of health to the most serious.

Category	Result	What it means
Advisory	Pass	A part is starting to wear. Monitor it and repair it before it gets worse.
Minor fault	Pass	A small problem with no immediate safety risk, but it should be fixed as soon as possible.
Major fault	Fail	A problem that could affect safety or the environment. The car fails and must be repaired.
Dangerous fault	Fail	A direct and immediate risk to safety. The car fails and must not be driven until it is fixed.

The important distinction is that advisories and minor faults still mean a pass, while major and dangerous faults mean a fail. If your car did fail, our guide on why cars fail their MOT explains the common causes, and whether you can drive without a valid MOT covers where you legally stand.

An advisory is a heads up, not a failure

A tester issues an advisory when a component is not yet worn enough to justify a failure, but is heading that way. It is a judgement call based on how much life is left in the part. The car meets the standard today, so you get your certificate and drive away as normal. The advisory simply flags where the next attention is likely to be needed, which is genuinely useful information rather than a black mark.

Common advisory examples

Advisories tend to cover parts that wear gradually. Common examples include brake pads or discs wearing thin but still within limits, a tyre with tread getting low but above the legal minimum, a slight play in a suspension joint, the beginnings of corrosion on a brake pipe or the underbody, and oil starting to seep from a component without yet leaking. None of these stop the car passing, but each is the sort of thing that can tip into a fail if left long enough.

It helps to read the exact wording, because a good tester will often give you a clue about how far along the wear is. A note that a tyre is worn close to the legal limit is more pressing than one that simply says a component is corroded but not seriously weakened. If the advisory is not clear, ask the garage directly what they saw and how long they would expect the part to last. That single question turns a vague line on a certificate into a plan you can act on, and it costs nothing to ask while you are standing at the desk paying for the test.

Do you have to act on an advisory?

Legally, no. An advisory does not invalidate your MOT certificate and it does not stop you driving. There is no fixed deadline attached to it. That said, the sensible reading of an advisory is act soon, not ignore. The whole point is that the part is on a path towards failing, and the cost of dealing with something early is usually far lower than dealing with it once it has caused further damage. There is also a legal backstop: whatever your MOT says, you must not drive a vehicle in a dangerous condition, so an advisory that worsens into a genuine safety problem cannot simply be left.

How urgently you act depends on the item. Brakes and tyres deserve prompt attention because they are safety-critical and wear can accelerate. A faint hint of surface corrosion, by contrast, might be worth watching over the coming year. If you are unsure, ask the garage how close the item is to being a problem, and factor it into your next service. Our comparison of the MOT versus a service explains how the two work together to keep a car healthy.

Where advisories show up later

Advisories are not just printed once and forgotten. They are recorded on your vehicle’s public MOT history, which anyone can look up. That has two consequences worth knowing. First, when you come to sell, a buyer checking the record will see every advisory, so a car with a long trail of unaddressed notes can be harder to sell. Second, it gives you a handy way to keep track of what needs doing. You can read exactly how to check your MOT history and see your advisories listed test by test, which makes it easy to plan repairs rather than being caught out at the next MOT.

In short, an advisory is one of the more helpful things on your certificate. It is not a punishment and it does not cost you anything today, but treated as an early warning it can save you money and stress when the next test comes around.