Your MOT failed: what you must fix now, and what can wait

A failed MOT arrives as a list of problems with words next to them, and the words are the important part. They are not the garage's opinion of urgency — they are fixed categories set by the DVSA, and they decide whether you can legally drive the car off the forecourt.

The four words, and what each one means

The MOT inspection manual defines them like this:

• Dangerous — "a direct and immediate risk to road safety or having an impact on the environment."
• Major — "may prejudice the safety of the vehicle, have an impact on the environment, put other road users at risk."
• Minor — "no significant effect on the safety of the vehicle or impact on the environment."
• Advisory — the item is not worn enough to fail, but the tester is telling you it is on its way.

Only major and dangerous cause a failure. A car with nothing worse than minor problems passes, and those minor items still get printed on the certificate.

Can you drive it away?

This is the question people get wrong, and it is expensive to get wrong.

• A dangerous defect: no. Not home, not to another garage. Driving it can cost up to £2,500, three penalty points and a driving ban.
• A major defect, with your old MOT still valid and no dangerous defects: yes, legally — but the car must still meet the minimum standards of roadworthiness at all times. A failure is not a grace period.
• Your old MOT has expired: no. You may only drive to a pre-arranged test or to a garage for repair. Otherwise it is a fine of up to £1,000.

If the car is dangerous and you cannot leave it where it is, that is a recovery job, not a drive.

The retest rules are worth real money

Where the car goes next changes what the retest costs.

• Leave it at the test centre and have it retested within 10 working days — partial retest, no fee.
• Take it away and bring it back before the end of the next working day, for certain items including lamps, wipers, mirrors and tyres — no fee.
• Take it away and bring it back within 10 working days — partial retest, and you can be charged a partial retest fee.
• Anything else — full retest, full fee again.

So "I'll get it fixed next month" quietly costs you another full test. If you are getting a second opinion on the repair, start it the same day.

What to actually do next

1. Get the failure list in writing, with the category next to each item. You are entitled to it and you will need it to compare quotes.
2. Separate the failures from the advisories. Advisories are not work you have to authorise today. A quote that bundles them in without saying so is a quote to question.
3. Ask what each item costs separately, parts and labour split out. A single number for "the failures" tells you nothing about whether it is fair.
4. You can take the repair elsewhere. The garage that tested your car has no claim on the work. Deciding to move it is normal and nobody will be surprised.

An MOT test itself is capped by law and cheap. The repair after it is not, and that is where knowing the range matters — see what an MOT costs in Liverpool.

Sources

• MOT inspection manual: cars and passenger vehicles — Introduction — defect category definitions. Checked 16 August 2026.
• GOV.UK — Getting an MOT: after the test — driving after a failure, and the penalties. Checked 16 August 2026.
• GOV.UK — Getting an MOT: retests — retest fees and time limits. Checked 16 August 2026.