01/09/2020
Discovering your car has failed its Ministry of Transport (MOT) test can be a frustrating and often worrying experience. It immediately raises questions about what to do next, how quickly you need to act, and what the implications are for driving your vehicle. The MOT is a crucial annual inspection that ensures your vehicle meets minimum road safety and environmental standards. A failure means your car has one or more defects that make it unroadworthy or potentially dangerous. But a failed MOT is not the end of the road for your vehicle; it’s a clear signal that attention is needed, and the good news is, retesting is a standard and often straightforward process.

- Understanding Your MOT Failure: Defects and Advisories
- What Happens Immediately After a Failed MOT?
- The MOT Retest Process: Your Options
- Driving with a Failed MOT: Know the Rules
- Repairing Your Vehicle After a Failure
- Preparing for the Retest
- Comparison of Retest Scenarios
- Frequently Asked Questions About MOT Retests
- Conclusion
Understanding Your MOT Failure: Defects and Advisories
When your car fails its MOT, the test centre will provide you with a 'refusal of an MOT test certificate'. This document is vital as it outlines all the reasons your vehicle failed, categorising each defect. Understanding these categories is the first step towards getting your car retested and back on the road.
- Dangerous Defects: These are serious issues that pose an immediate and direct risk to road safety or have a significant impact on the environment. If your car has a dangerous defect, it absolutely cannot be driven on the road until it has been repaired. Doing so is illegal and highly dangerous.
- Major Defects: These are significant issues that could affect the vehicle's safety, impact the environment, or put other road users at risk. While not as immediately critical as 'dangerous' defects, major defects also mean your car has failed the MOT and cannot legally be driven on the road, with very limited exceptions for repair or retest.
- Minor Defects: These are issues that have no significant effect on the safety of the vehicle or impact on the environment. They are not a reason for MOT failure, but they should be repaired as soon as possible.
- Advisories: These are observations about components that are not currently a reason for failure but could become an issue in the future. They are for your information and do not require immediate action for the MOT, but addressing them proactively can prevent future failures.
It's imperative to review the failure sheet carefully. Each point listed must be addressed before your vehicle can pass a retest. Don't overlook any details, as even a seemingly small defect can lead to another failure.
What Happens Immediately After a Failed MOT?
Once your car fails, the test centre will issue you with a VT30 (Refusal of an MOT test certificate). This document details all the reasons for the failure. At this point, you have a few options:
- You can leave your car at the test centre to have the repairs done there. Many test centres also operate as repair garages and will offer to fix the issues for you.
- You can take your car away to have the repairs done elsewhere, either by another garage or by yourself if you possess the necessary skills and tools.
- In rare cases, if you believe the MOT test was conducted unfairly or incorrectly, you can appeal the decision. This process involves filling out a VT17 form and having DVSA re-examine your vehicle. However, this is a less common scenario and typically only pursued if you are certain of an error.
The most common path is to get the necessary repairs done and then undergo a retest.
The MOT Retest Process: Your Options
The type of retest you need and whether it's free or incurs a fee depends primarily on how quickly you get the repairs done and where the retest is conducted. The DVSA (Driver and Vehicle Standards Agency) outlines specific conditions for different retest scenarios.
1. The Free Retest
This is the most desirable outcome financially, but it comes with strict conditions. You can get a free retest if:
- The vehicle is left at the same test centre for repairs and retested within 10 working days.
- The vehicle is taken away for repair but brought back to the same test centre for a partial retest within one working day (for certain items only).
For the "taken away for repair" free retest (within one working day), only minor repair items qualify. These are typically things that don't require significant dismantling or specialist equipment. Examples of items that qualify for a free retest if repaired and brought back within one working day include:
- Bonnet
- Boot lid
- Brake pedal anti-slip
- Direction indicators
- Doors
- Electric wiring
- Fuel filler cap
- Horn
- Lamps (lights)
- Loading door
- Mirrors
- Registration plates
- Seat belts (check of operation only)
- Seats
- Steering wheel
- Tailgate
- Tyre pressure monitoring system (TPMS) warning lamp
- Vehicle identification number (VIN)
- Wipers and washers
- Windscreen
If your car failed on any of these minor items, and you fix them yourself or at another garage, you can return to the original test centre within one working day for a free retest of just those items. This means the centre will only check the repaired faults, not conduct a full new test.
2. The Partial Retest (Reduced Fee)
This applies if your vehicle is taken away from the test centre for repairs and returned for a retest within 10 working days (excluding Sundays and bank holidays) to the same test centre. In this scenario, the test centre will only recheck the items that caused the original failure, not the entire vehicle. This is beneficial as it's quicker and significantly cheaper than a full retest, often costing around half the price of a full MOT, or sometimes a nominal fee. This is your reduced fee option.
Most common failure items, such as brakes, suspension, emissions, and major lighting issues, fall into this category. As long as you return to the original test centre within the 10-working-day window, you'll be eligible for this reduced-fee retest.
3. The Full Retest
A full MOT retest is required in the following circumstances:
- If you take your vehicle to a different MOT test centre for the retest.
- If you return your vehicle to the original test centre more than 10 working days after the original failure.
In these cases, the test centre will conduct a completely new MOT test, checking all aspects of the vehicle as if it were its first MOT. This means you will pay the full MOT test fee again. It's crucial to be aware of this, as delaying repairs or choosing a different test centre can significantly increase your costs.
Driving with a Failed MOT: Know the Rules
This is one of the most critical aspects to understand after a failed MOT. Generally, it is illegal to drive a vehicle on public roads without a valid MOT certificate. Doing so can lead to a fine of up to £2,500, points on your licence, and your insurance being invalidated. However, there are very specific exceptions:
- You can drive your vehicle to a pre-booked appointment at a garage for repairs to fix the defects that caused the MOT failure.
- You can drive your vehicle to a pre-booked MOT retest appointment.
In both these cases, you must have proof of the pre-booked appointment (e.g., a confirmation email or repair order) and the vehicle must still be considered roadworthy by you. If your vehicle failed on a "dangerous" defect, it is illegal to drive it on the road at all, even to a garage or retest centre, unless it is on a trailer or towed. Driving a vehicle with dangerous defects is a serious offence, regardless of having a pre-booked appointment. Always err on the side of caution; if in doubt, arrange for your car to be recovered.
Repairing Your Vehicle After a Failure
Once you have the refusal certificate, you need to address every single point of failure. You have two main options for repairs:
- Professional Garage: Most people opt to have the repairs carried out by a qualified mechanic. This ensures the work is done correctly and safely. Many MOT test centres offer repair services, making it convenient to get the work done and then the retest without moving the car.
- DIY Repairs: If you are mechanically competent and have the right tools, you can undertake the repairs yourself. This can save money on labour costs. However, you must be absolutely confident in your abilities, especially for critical safety components like brakes or suspension. Remember, the vehicle still needs to meet the stringent MOT standards.
It’s always a good idea to keep records of any repairs done, especially if you have them carried out elsewhere. This can be useful for your own records and can sometimes help if there are any queries during the retest.
Preparing for the Retest
Before you take your car back for the retest, even if it's just a partial one, it's wise to do a quick double-check of the items that caused the failure. Ensure that the repairs have been carried out correctly and that the fault is no longer present. Additionally, it's a good practice to quickly check other basic items that can often lead to failures, just to be safe:
- Lights: Check all lights (headlights, sidelights, brake lights, indicators, fog lights, number plate lights) are working and are the correct colour.
- Tyres: Ensure tyres have adequate tread depth (minimum 1.6mm across the central three-quarters of the tread and around the entire circumference), no bulges, cuts, or exposed cords. Check tyre pressures.
- Wipers and Washers: Make sure wipers clear the windscreen effectively and the washer fluid reservoir is topped up.
- Fluid Levels: Check engine oil, brake fluid, power steering fluid, and coolant levels. While not always direct failure points, low levels can indicate underlying issues.
- Horn: Ensure it works and is loud enough.
- Windscreen: Check for any chips or cracks larger than 10mm in the driver's central view or 40mm elsewhere in the swept area.
- Number Plates: Ensure they are clean, readable, and securely fitted.
A little pre-retest check can save you the hassle and cost of another failure.
Comparison of Retest Scenarios
Here's a handy table summarising the different retest options:
| Retest Type | Location | Timeframe | Cost | Scope of Retest |
|---|---|---|---|---|
| Free Retest | Same test centre | Within 1 working day (for minor items only) OR vehicle left at centre for repairs & retest within 10 working days | £0 | Only failed items are rechecked (or full test if left at centre) |
| Partial Retest | Same test centre | Within 10 working days | Reduced fee (typically half price) | Only failed items are rechecked |
| Full Retest | Different test centre OR same test centre | After 10 working days | Full MOT test fee | Entire vehicle is retested |
Frequently Asked Questions About MOT Retests
Q1: How long do I have to retest my car after a failed MOT?
You have up to 10 working days to return your car to the original test centre for a reduced-fee partial retest. If you return within 1 working day for specific minor items, it can be free. After 10 working days, or if you go to a different test centre, a full new MOT test will be required at the full fee.
Q2: Can I drive my car with a failed MOT?
Generally, no. It is illegal to drive a vehicle on public roads without a valid MOT certificate. The only exceptions are if you are driving to a pre-booked appointment for repairs to fix the defects, or to a pre-booked MOT retest appointment. Crucially, the vehicle must not have any "dangerous" defects, and you must have proof of your appointment.
Q3: What if I fix some issues but not all?
Your car will fail the retest if any of the original failure points have not been adequately addressed. All defects listed on the refusal certificate must be repaired to the required standard for your vehicle to pass. It's an all-or-nothing situation for the retest.
Q4: Can I go to a different garage for the retest?
Yes, you can. However, if you choose a different garage for your retest, or if you return to the original garage after the 10-working-day window, you will be required to pay for a full new MOT test at the standard fee. There will be no reduced-fee or free retest option available.
Q5: What happens if I don't retest my car?
If your car has a failed MOT and its previous MOT certificate has expired, you cannot legally drive it on public roads (with the exceptions mentioned above). Driving without a valid MOT can lead to fines, points on your licence, and potentially invalidate your car insurance, making any accident claims much more complicated or impossible. It could also lead to your vehicle being seized by the police.
Q6: How much does an MOT retest cost?
The cost varies. A retest within 1 working day for specific minor items at the original test centre is free. A partial retest within 10 working days at the original test centre usually costs a reduced fee, which is typically half the price of a full MOT or a nominal charge (e.g., £10-£25). A full retest (if outside the 10-day window or at a different centre) costs the full MOT fee, which has a maximum set by the DVSA (currently £54.85 for cars and small vans).
Conclusion
A failed MOT is certainly a setback, but it's a manageable one. The system is designed to give you ample opportunity to rectify issues and get your vehicle back to a safe and legal standard. By understanding the different retest options, adhering to the timeframes, and ensuring all defects are properly addressed, you can navigate the process smoothly. Prioritising safety and legal compliance is paramount; a roadworthy vehicle not only protects you and your passengers but also contributes to the safety of everyone on the road. Don't delay in addressing a failed MOT – get those repairs done and secure that pass certificate!
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