MOT & ROADWORTHINESS · LAST REVIEWED: JUNE 2026
TL;DR: The most significant new MOT rules in recent years were the May 2018 defect grades of dangerous, major, minor and advisory. Any genuine change is announced by DVSA and published on gov.uk, which is the only reliable place to confirm the current rules for 2026.
Searches for new MOT rules tend to spike whenever a change is rumoured, but the rules that govern the everyday test have been stable for several years. The last major change to how the MOT works was the introduction of defect grading in May 2018, which altered the way faults are described on the certificate.
This guide explains that change, how DVSA communicates updates, and where to confirm the current position. Because rules can be adjusted, the most important habit is to verify any claim against gov.uk rather than relying on second hand summaries.
KEY FACTS
- The defect categories of dangerous, major, minor and advisory were introduced in May 2018 and remain in use.
- A dangerous or major defect is a fail; a minor defect is noted but the vehicle can still pass; an advisory flags something to monitor.
- DVSA announces MOT changes officially and publishes them on gov.uk and in the MOT inspection manual.
- The first MOT is due three years after registration in Great Britain, and after four years in Northern Ireland through the DVA.
- Vehicles more than 40 years old may be exempt from the MOT if they have not been substantially changed.
The May 2018 defect grades
Before May 2018 an MOT was largely a straightforward pass or fail with advisory notes. The change introduced graded defects so that the seriousness of a fault is recorded more clearly. A dangerous defect means a direct and immediate risk to road safety and is a fail. A major defect could affect safety or the environment and is also a fail.
A minor defect is recorded but does not stop the vehicle passing, while an advisory flags a component that is wearing and may need attention before the next test. This grading is still the framework in use, which is why it remains the reference point for any discussion of newer rules.
How DVSA announces changes
Genuine changes to the MOT are made and communicated by DVSA, the agency responsible for the test. Announcements appear on gov.uk and are reflected in the MOT inspection manual that test stations follow. Changes to emissions limits, to the items checked, or to exemptions are documented there with effect dates.
Because the manual is the working document testers use, it is the most precise source for what is assessed and how. Where a headline claims a sweeping change, checking the manual or the relevant gov.uk page shows whether the change is real, proposed, or simply speculation.
Consultations versus confirmed rules
From time to time the government consults on possible MOT changes, such as the timing of the first test or the frequency of testing. A consultation is a proposal and a request for views, not a rule that has taken effect. Coverage of a consultation can read as if a change is already in force when it is not.
The practical test is whether gov.uk states that a rule applies and from what date. Until a change is confirmed and dated there, the existing rules continue to apply, including the three year point for a first MOT in Great Britain and the annual test thereafter.
How to verify the current rules
For any specific figure, such as a fee or an emissions limit, the safest approach is to check gov.uk for the current figure rather than relying on memory or a cached article. Fees have a published maximum, the inspection manual lists what is checked, and the exemptions pages set out the 40 year rule and other cases.
Keeping to primary sources also avoids the confusion that comes from older guides that were accurate when written but predate a change. The MOT history service, the inspection manual and the main MOT pages together cover almost every question about the current rules.
Why older guidance can mislead
Much of the confusion around new MOT rules comes from guidance that was correct when it was published but has since been overtaken by a change. An article describing the test before May 2018 will not mention graded defects, and a page written before a fee change will quote an out of date figure. Neither is dishonest; it is simply dated.
This is why the date and the source of any claim matter as much as the claim itself. A summary that does not say when it was last reviewed, or that cannot be traced back to a gov.uk page, should be treated with caution. The official pages carry the authority and are kept current.
For owners the practical habit is simple. Treat headlines and forum posts as a prompt to check rather than a conclusion, and confirm anything specific on gov.uk or in the inspection manual. That approach holds good whether the question is about defect grades, the timing of the first test, exemptions or fees.
The same caution applies to dates that get attached to rules online. A change announced for one part of the United Kingdom does not automatically apply everywhere, since Northern Ireland operates its testing through the DVA and has its own arrangements, including a first test at four years rather than three. A claim that quotes a single date for the whole of the UK is therefore worth checking against the relevant official page, because the rule and its start date can differ depending on where the vehicle is registered and used.
RELATED GUIDES
DISCLAIMER: This guide is general information, not professional advice. MOT rules and fees are set by the DVSA and can change. Check gov.uk for current requirements before acting.
Frequently Asked Questions
What are the latest new MOT rules?
The last major change was the May 2018 introduction of graded defects: dangerous, major, minor and advisory. Any newer change is announced by DVSA and published on gov.uk, which is the place to confirm what currently applies.
Did the MOT rules change in 2026?
For the everyday test the framework remains the May 2018 grading. Specific figures such as fees or emissions limits can be updated, so check gov.uk for the current figure rather than relying on a summary.
What is the difference between a major and a minor defect?
A major defect could affect safety or the environment and is a fail. A minor defect is recorded on the certificate but does not stop the vehicle passing, though it should be repaired.
Has the first MOT date changed?
In Great Britain the first MOT is still due three years after registration. Proposals to change this have been consulted on in the past, but a consultation is not a rule until gov.uk confirms it with a date.
Where can I confirm the current MOT rules?
Use gov.uk and the DVSA MOT inspection manual. They are the primary sources for what is tested, the defect grades, fees and exemptions, and they are updated when a rule changes.
