What Happens if Your Car Fails Its MOT?
If your car fails its MOT you are given a refusal certificate and the car needs repairs before a retest. This guide explains what a fail means and the steps to get back on the road.
What Happens if Your Car Fails Its MOT?
When a car fails its MOT the garage issues a refusal certificate that lists the faults found. The car then needs those faults repaired and a retest before it is legal to drive again. What you can do in the meantime depends on how serious the faults are.
Faults are recorded by category. A dangerous fault means the car is unsafe and must not be driven at all until it is repaired. A major fault also means a fail and must be put right, though it is not flagged as an immediate danger. Minor faults do not cause a fail and are simply noted for your attention. Our guide on What an MOT Checks lists everything a tester checks.
A fail is not a disaster. It simply means the car did not meet the standard on the day and needs some work. The sensible next step is to get the faults repaired promptly, ideally at the same garage so you keep the option of a free or reduced retest.
What the Fault Categories Mean
Understanding the categories tells you how urgent the work is and whether you can move the car at all. The table below sets out what each one means.
| Category | What It Means | Can You Drive? |
|---|---|---|
| Dangerous | A direct risk to safety | No, not until repaired |
| Major | A fail that must be fixed | Only if your old MOT is still valid |
| Minor | Noted but still a pass | Yes, fix it soon |
| Advisory | A warning of future wear | Yes, monitor it |
The dangerous and major categories are the ones that cause a fail. The difference between them is really about immediate safety. Our guide on Driving After a Failed MOT explains exactly when you can and cannot drive a failed car.
Failed Your MOT in Ely? We Can Help
Our team can repair the faults on your failed MOT and retest the car in one place, so you are back on the road quickly and legally.
Book Your MOTHow the Free Retest Window Works
After a fail there is a helpful window that can save you the cost of a second full test. If you leave the car at the same test centre and it is repaired then retested within ten working days, the retest is usually free or heavily reduced.
Taking the car away and bringing it back can change this, so the simplest route is to have the repairs done where the test took place. That is one of the reasons booking with a garage that can both test and repair saves time and money. Our guide on MOT Retest Rules explains the retest rules in full.
What to Do After a Failed MOT
A clear plan takes the stress out of a fail. The goal is to get the faults fixed and the car retested with as little fuss as possible, while staying on the right side of the law.
Check which faults are dangerous and which are major, since that decides whether the car can be moved at all.
Have the faults repaired, ideally at the test centre so you keep the free or reduced retest option.
Aim to retest within ten working days of the original test to make the most of the retest window.
Knowing the common reasons cars fail helps you avoid a repeat next year. Our guide on Top Reasons Cars Fail MOT covers the faults that catch most cars out.
What a Failed MOT Might Cost to Put Right
A fail on its own does not add to the test fee, since you have already paid for the inspection. The cost comes from the repairs needed to pass, which varies enormously with the fault. A blown bulb or a wiper blade is a few pounds, while worn brakes or a corroded part can run into more.
The best way to keep costs down is to know the price before any work starts. A good garage will always quote the cost of a repair and get your agreement before carrying it out, so there are no surprises. Booking with a centre that can repair on the spot also means you avoid a second trip and keep the free retest window open. Our guide on Why MOT Prices Vary explains how repair prices vary.
Explore More MOT Guides
Our full library answers the questions drivers ask most about testing, costs, rules and failures, all in one place.
Visit the MOT Guides HubGet Back on the Road
This guide is part of our full MOT Guides hub, where the testing, cost and rules articles sit together so you can move to the exact detail you need next. When it is time to book, our team offers full MOT testing and repairs from our centre in Ely. You may also find it useful to read Driving After a Failed MOT, MOT Retest Rules and Top Reasons Cars Fail MOT.
Common Questions
Book Your MOT at Ely Motor Services
Failed elsewhere or due a test? Our Ely team can repair and retest your car in one visit. Get a quote or call our friendly team today.