MOT results
What does an MOT failure mean?
An MOT fail means the vehicle did not meet the required standard on the day of the test. Learn defect categories, driving rules, and what to do next.
Last reviewed 2026-10-02
What a fail result means
When a tester records one or more fail-level defects, the MOT result is a fail. No new 12-month certificate is issued until the vehicle passes after repairs (and any required retest).
If your previous MOT is still in date, that old certificate does not magically disappear — but you must not drive with dangerous defects, and other fails may restrict use. Follow GOV.UK guidance after failing.
MOTCheckers lists fails in the MOT failures section of each report with the recorded wording and test date.
Major vs dangerous defects
Dangerous defects indicate an immediate risk to road safety. GOV.UK states you must not drive the vehicle until it is repaired.
Major defects are serious issues that fail the test — for example significant brake problems or sharp corrosion near structural points. They must be fixed before a pass is issued.
Minor defects and advisories do not fail the test on their own. See MOT defect categories on GOV.UK for official descriptions.
Retests and repair deadlines
After a fail, you can leave the car at the test centre for repair or take it elsewhere, subject to driving rules. Partial retests may be free or lower cost if returned within a working-day limit and only certain items failed — confirm with the garage.
Our guide what is an MOT retest? explains partial vs full retests in plain English.
How fails appear in MOT history
Failed tests remain visible in MOT history alongside later passes. That transparency helps buyers spot recurring problems.
When reviewing a car, look at whether fails were isolated (for example a blown bulb) or repeated (emissions, corrosion, suspension). Pair MOT data with a physical inspection.
Frequently asked questions
Can I drive home after an MOT failure?+
It depends on defect severity and whether your previous MOT is still valid. Dangerous defects must not be driven. For other situations, ask the tester and read current GOV.UK rules rather than assuming you can drive away.
Does a fail affect insurance?+
A fail itself is a test outcome, but driving when you should not, or with known dangerous defects, can have insurance implications. Check your policy and GOV.UK guidance.
How long do I have to fix a failed MOT?+
Partial retest concessions are time-limited (often within 10 working days for certain items at the same centre). There is no unlimited grace period — arrange repairs promptly.