Can you drive a car that failed its MOT?
You can drive a car that has failed its MOT only if two things are true: your current MOT certificate hasn't expired yet, and the test didn't find any "dangerous" problems. If either isn't the case, the car has to be repaired before it goes back on the road. The only exception is driving it to a garage for repairs or to a pre-booked MOT.
Even when you're allowed to drive it, the car still has to be roadworthy. A major defect on a car with a valid certificate doesn't give you permission to keep driving on a tyre with no tread.
Dangerous vs major: the difference that decides it
| What's on your result | Old MOT still valid | Old MOT expired |
|---|---|---|
| Dangerous defect | Don't drive it | Don't drive it |
| Major defect only | You can drive it, but it must be roadworthy | Only to a repair or a pre-booked test |
| Minor defects or advisories only | It passed. Drive it and get them looked at | It passed |
A dangerous defect is the tester saying the car is an immediate risk. Typical examples are brake pads below 1.5mm, a tyre under the 1.6mm legal limit, a leaking brake pipe or a bulge in a tyre wall.
What happens if you drive it anyway
According to GOV.UK, driving a car that failed on a dangerous defect can mean a fine of up to £2,500, a driving ban and 3 penalty points. Driving with no valid MOT at all can bring a fine of up to £1,000.
Those are separate from anything you could be done for because of the defect itself. Bald tyres, for example, carry their own penalty for each tyre.
Why testing early gives you breathing space
You can have an MOT up to a month (minus a day) before the current one runs out and still keep the same renewal date. That's worth doing on any car with a few years on it.
If it fails on a major defect while the old certificate is still running, you can usually keep using the car for a few days while you get the repair sorted, as long as it's safe. Test on the last day and fail, and the car is off the road from the moment the old certificate expires.
How retests work
Retest rules depend on where the repair is done and how quickly the car comes back. The GOV.UK retest page has the full detail, but in short:
- Back to the same test centre by the end of the next working day. No fee for a partial retest on a list of items that includes lamps (but not headlight aim), wipers and washers, mirrors, seat belts, wheels and tyres, the horn, the number plates and windscreen glass.
- Left at the test centre for repair. You only need a partial retest if it's repaired and retested within 10 working days.
- Taken away for repair and brought back within 10 working days. A partial retest, which may carry a fee.
- Anything else. A full test at the full fee again. The maximum fee for a car is £54.85.
So if a car fails on a blown bulb and a worn tyre, fixing both and getting it back to the same centre the next working day costs nothing extra in test fees.
What to do right after a fail
- Read the result and check for anything listed under "dangerous". If there is, arrange recovery or a mobile repair rather than driving it.
- Paste the defects into the MOT advisory decoder to see what each one means and a rough cost for the repair.
- Ask the test centre for a repair quote, and if you want a second price, get one. You don't have to have the work done where it was tested.
- Look at the advisories too. If the car is going in for repairs anyway, sorting a worn advisory item at the same time often saves labour.
If the car passed but came with a list of advisories, our guide on what MOT advisories mean explains which ones can wait.
Got more than one advisory?
Paste your whole MOT result into the decoder. It explains every line, sorts them by urgency and adds up a rough repair budget.
Decode my MOT