26/03/2015
The dread of seeing that dreaded 'fail' on your MOT certificate is a feeling many UK motorists can relate to. It's not just a minor inconvenience; it signifies that your vehicle does not meet the minimum safety and environmental standards required by law to be driven on public roads. However, a failed MOT isn't the end of the road for your car. Instead, it's a clear directive that certain issues need addressing to ensure your vehicle is safe, roadworthy, and compliant. Understanding the implications of a fail, your immediate options, and the subsequent steps is crucial for getting your car back in shape and avoiding further legal complications.

This comprehensive guide will walk you through everything you need to know about an MOT failure, from deciphering the reason for the fail to the various retest options and what you can and cannot do with your vehicle after it's failed. We'll explore common failure points, provide advice on getting repairs done, and help you navigate the process with confidence, ensuring you can get back on the road safely and legally as quickly as possible.
- Understanding Your MOT Failure: Defects Explained
- Immediate Steps After an MOT Failure
- The Retest Process: What You Need to Know
- Common Reasons for MOT Failure
- Choosing a Repair Garage
- Appealing an MOT Decision
- Preventative Maintenance to Avoid Future Failures
- Frequently Asked Questions About MOT Failures
- Conclusion
Understanding Your MOT Failure: Defects Explained
When your vehicle fails its MOT, the test centre will provide you with a 'refusal of an MOT test certificate' (VT30). This document is incredibly important as it details the reasons for the failure. Since May 2018, MOT failures are categorised into three types:
- Minor Defects: These are issues that aren't a direct fail but are noted on your certificate as 'advisories'. They mean something needs monitoring or repairing in the future, but your car still passes the MOT for now.
- Major Defects: These are significant issues that mean your vehicle is not roadworthy and fails the MOT. These defects require immediate attention and repair before your vehicle can pass. Examples include significant brake wear, faulty lights, or excessively worn tyres. You cannot legally drive a vehicle with a major defect on public roads unless you are taking it to a pre-arranged appointment for repair or retest.
- Dangerous Defects: As the name suggests, these are defects that pose a direct and immediate risk to road safety or the environment. These are the most severe category and result in an automatic MOT failure. Examples include severely corroded brake lines, steering components on the verge of failure, or bald tyres. It is absolutely illegal to drive a vehicle with a dangerous defect on public roads, even to a garage for repair, until the defect has been rectified. Doing so can lead to significant fines, points on your license, and invalidation of your insurance.
It's vital to carefully review your VT30 certificate and understand which category your vehicle's defects fall into. This will dictate your immediate actions and legal obligations.
Immediate Steps After an MOT Failure
Once you have your VT30, the first thing to do is assess the severity of the failure. If your vehicle has 'dangerous' defects, you absolutely cannot drive it away from the test centre. You will need to arrange for it to be towed or transported to a garage for repairs. If the defects are 'major' but not 'dangerous', and your previous MOT certificate is still valid (i.e., it hasn't expired yet), you may drive the vehicle to a pre-arranged appointment for repair or to another MOT test centre. However, if your previous MOT has expired, you can only drive it to a pre-arranged test or repair appointment, and only if it is still deemed roadworthy by you and an enforcement officer. This is a significant grey area, and it's always safer to avoid driving if there's any doubt about roadworthiness.
Your options generally fall into three categories:
- Leave your car at the test centre: Many test centres also offer repair services. If you opt for this, they can carry out the necessary repairs and then conduct a retest, often for free or at a reduced cost, provided the retest is done within a specific timeframe. This is often the most convenient option.
- Take your car elsewhere for repairs: You can take your car to another garage for the repairs. Once fixed, you'll need to return it to an MOT test centre for a retest.
- Fix the car yourself: If you're mechanically inclined and the repairs are within your capability, you can fix the issues yourself. After the repairs, you'll still need to take it to an MOT test centre for a retest.
The Retest Process: What You Need to Know
The type of retest you'll need, and whether it's free, will depend on when and where the repairs are carried out. The rules are designed to encourage quick repairs and retests.
Free Retest Conditions (Within 10 Working Days)
You are entitled to a free retest if the vehicle remains at the same test centre and is repaired and retested within 10 working days of the original test. This is often the most cost-effective and straightforward option. Additionally, if you take the vehicle away for repair but return it to the same test centre within 10 working days, only a partial retest is required, and this is also free. This partial retest only covers the items that failed in the initial test, provided the vehicle was not driven on public roads with dangerous defects.
Partial Retest (Reduced Fee)
If your vehicle is returned to the same test centre for a retest within 10 working days, but only specific items were failed (e.g., lights, tyres, emissions, steering, suspension, brakes), a partial retest will be conducted. This usually incurs a reduced retest fee, as only the failed items need to be checked again. This applies if you took the vehicle away and brought it back within the 10-day window.
Full Retest
If you take your vehicle away and return it to the same test centre after more than 10 working days, or if you take it to a different MOT test centre altogether, you will be required to pay for a full MOT test again. This means the entire test procedure will be repeated, even if only minor issues caused the initial failure. This is why it's often more economical to get the repairs done and retested within the 10-day window at the original test centre.
Here’s a comparison of retest scenarios:
| Scenario | Location of Repair | Timeframe to Retest | Retest Type | Cost Implication |
|---|---|---|---|---|
| Vehicle left at original test centre. | Original Test Centre | Within 10 working days | Full re-examination of failed items. | Free |
| Vehicle taken away for repair, returned to original test centre. | Any Garage / DIY | Within 10 working days | Partial re-examination of failed items. | Free |
| Vehicle taken away for repair, returned to original test centre. | Any Garage / DIY | After 10 working days | Full MOT Test | Full MOT Fee |
| Vehicle taken to a different test centre for retest. | Any Garage / DIY | Any Time | Full MOT Test | Full MOT Fee |
Common Reasons for MOT Failure
While a failure can feel daunting, many common reasons are relatively straightforward to fix. Awareness of these can help you perform pre-MOT checks and potentially avoid a fail in the future.

- Lights: Headlights, brake lights, indicators, fog lights, and number plate lights must all be working correctly, be the right colour, and be securely fitted. Blown bulbs are a very common cause of failure.
- Tyres: Tread depth must be at least 1.6mm across the central three-quarters of the tread around the entire circumference. Tyres also fail for bulges, cuts, exposed cords, or incorrect tyre pressure.
- Brakes: Brake performance, condition of brake pads, discs, lines, and fluid levels are all checked. Uneven braking or excessive wear will lead to a fail.
- Suspension: Shock absorbers, springs, and suspension linkages are inspected for wear, leaks, or damage. Worn bushes or broken springs are common issues.
- Steering: Play in the steering system, condition of power steering components, and steering linkages are checked. Excessive play can be dangerous.
- Emissions: Exhaust emissions are measured to ensure they meet legal limits. This often fails due to a faulty catalytic converter, exhaust leaks, or engine management issues.
- Windscreen and Wipers: Damage to the windscreen (chips or cracks in the driver's line of sight), and the condition and effectiveness of windscreen wipers are checked.
- Bodywork and Chassis: Significant corrosion or damage to the vehicle's structure within a specified distance of safety-critical components can lead to a fail.
- Driver's View: Anything obstructing the driver's view, such as stickers or sat-navs incorrectly placed, can cause a failure.
Choosing a Repair Garage
If you decide to take your vehicle elsewhere for repairs, it's essential to choose a reputable garage. Here are some tips:
- Get Multiple Quotes: Don't just go with the first quote. Get at least two or three to compare prices and ensure you're getting a fair deal. Ensure the quotes are detailed and specify parts and labour.
- Check Reviews: Look for garages with good online reviews and a solid reputation for quality work and customer service.
- Ask for Guarantees: A good garage will offer a warranty on their parts and labour.
- Transparency: Ensure the garage is transparent about the work that needs doing. They should be able to explain the defects clearly and show you the faulty parts if requested.
- Specialisation: For certain issues, a garage specialising in that area (e.g., exhaust systems, brakes) might be a better choice.
Appealing an MOT Decision
While rare, if you believe your vehicle has unfairly failed its MOT, you have the right to appeal the decision. You must do this within 14 working days of the original test date. First, discuss your concerns with the test centre. If you're still not satisfied, you can fill out a VT17 form and send it to the DVSA (Driver and Vehicle Standards Agency). A DVSA examiner will then re-examine your vehicle. Be aware that if the DVSA finds the original test was correct, you may have to pay a fee for the appeal inspection. It's crucial not to have any repairs done to the vehicle before the appeal inspection, as this will invalidate your appeal.
Preventative Maintenance to Avoid Future Failures
The best way to deal with an MOT failure is to prevent it in the first place. Regular preventative maintenance throughout the year can significantly reduce the chances of your car failing its annual inspection.
- Regular Servicing: Stick to your car's service schedule. A professional service can identify potential issues long before they become MOT failures.
- Check Lights Regularly: Walk around your car once a week and check all lights, including brake lights (ask someone to help), indicators, and fog lights.
- Tyre Checks: Regularly check tyre pressure, tread depth (using a 20p coin test), and look for any bulges or cuts.
- Fluid Levels: Keep an eye on engine oil, brake fluid, power steering fluid, and screenwash levels.
- Wipers and Washer Fluid: Ensure your wipers are in good condition and your washer fluid reservoir is topped up.
- Warning Lights: Never ignore dashboard warning lights. They often indicate a problem that could lead to an MOT failure.
- Brakes: Listen for any grinding or squealing noises, and notice if your car pulls to one side when braking.
Frequently Asked Questions About MOT Failures
Q: Can I drive my car if my MOT has expired and it failed its test?
A: No, not legally. The only exception is if you are driving it to a pre-arranged appointment at an MOT test centre or a garage for repairs, and the vehicle is still considered roadworthy by an enforcement officer. If your car failed with 'dangerous' defects, you cannot drive it at all, even to a garage; it must be transported.
Q: What if I can't afford the repairs right away?
A: This is a challenging situation. You cannot legally drive the vehicle on public roads until it has passed its MOT. If you cannot afford repairs immediately, the vehicle must be kept off the road. Continuing to drive an un-MOT'd vehicle can lead to significant fines, points, and even vehicle impoundment, as well as invalidating your insurance.
Q: Can I get a second opinion on my MOT failure?
A: Yes, you can. You can take your vehicle to another MOT test centre for a new test. However, you will have to pay the full fee for the second test. If the second test passes, and you still believe the first was incorrect, you can then proceed with an appeal as described above.
Q: Do I need to get all advisory items fixed?
A: Advisory items do not cause an MOT failure. However, they are a warning that something needs attention. It's highly recommended to address these issues promptly, as they could develop into major or dangerous defects before your next MOT, potentially leading to a failure or safety concerns.
Q: What's the penalty for driving a car without a valid MOT?
A: Driving without a valid MOT certificate can result in a fine of up to £1,000. If your vehicle also has 'dangerous' defects, the fine can be up to £2,500, and you could receive three penalty points, and potentially be disqualified from driving. Your insurance will also be invalid if you're involved in an accident.
Conclusion
An MOT failure is undoubtedly frustrating, but it's a vital safety mechanism designed to keep our roads safe. By understanding the different categories of defects, your retest options, and the legal implications of driving a failed vehicle, you can navigate the situation effectively. Remember, the goal is to get your vehicle back to a safe and roadworthy condition. Prioritising these repairs and performing regular preventative checks will not only help you pass your next MOT but also ensure the safety and longevity of your vehicle. Don't delay addressing the issues; swift action is key to getting your car back on the road safely and legally.
If you want to read more articles similar to MOT Failure: Your Next Steps in the UK, you can visit the MOT category.
