18/08/2020
The MOT test, or Ministry of Transport test, is an annual examination of your vehicle to ensure it meets the minimum road safety and environmental standards. It's a legal requirement for vehicles over three years old in the UK. At Absolute Autos, we understand that the MOT can seem daunting, so we aim to make the process as transparent and efficient as possible. Our testing typically takes around an hour, allowing you to get back on the road quickly. However, it's important to remember that this timeframe is for the test itself; any necessary repairs will naturally extend this.

What Does an MOT Test Cover?
The MOT test is a comprehensive check of various components of your vehicle. It's designed to identify potential safety hazards and ensure your car complies with environmental regulations. The test is divided into several key areas:
1. Vehicle Identification Number (VIN)
The VIN is checked to ensure it's present, legible, and hasn't been tampered with. This is a fundamental check to confirm the vehicle's identity.
2. Body and Vehicle Structure
This section assesses the general condition of the vehicle's bodywork. It includes checks for:
- Corrosion: Significant rust or corrosion in structural areas, such as the chassis, suspension mounting points, and subframes, can lead to failure.
- Damage: Any sharp edges or protruding parts that could pose a danger to pedestrians or other road users.
- Security: The integrity of the vehicle's structure, ensuring it's not compromised in a way that affects its safety.
3. Lighting Equipment
All lights on your vehicle are tested for proper function, including:
- Headlights (dipped and main beam)
- Tail lights
- Brake lights
- Indicator lights
- Number plate lights
- Fog lights (front and rear)
The brightness, aim, and colour of the lights are all assessed. Improperly aimed headlights, for instance, can be a major reason for failure.
4. Brakes
This is one of the most critical aspects of the MOT. The test involves checking the effectiveness and condition of your braking system, including:
- Brake pedal: Checking for sponginess or excessive travel.
- Brake fluid: Ensuring the fluid level is adequate and the reservoir is not leaking.
- Brake pipes and hoses: Inspecting for corrosion, leaks, or damage.
- Brake discs and pads: Checking for wear, damage, or contamination.
- Parking brake: Ensuring it holds the vehicle securely.
Brake performance is measured on a rolling road, ensuring they meet specific stopping power requirements.
5. Tyres and Wheels
Your tyres and wheels are examined for safety and compliance:
- Tyre tread depth: The legal minimum is 1.6mm across the central three-quarters of the tyre's width.
- Tyre condition: Checking for cuts, bulges, or any other damage.
- Tyre pressure: While not directly tested for MOT, incorrect pressures can affect tyre wear and safety.
- Wheel condition: Ensuring wheels are not damaged or excessively corroded.
- Wheel nuts/bolts: Confirming they are present and secure.
6. Steering and Suspension
This section focuses on the components that allow you to control the vehicle:
- Steering wheel: Checking for excessive play.
- Steering system: Inspecting for wear or damage in components like the steering rack, track rod ends, and power steering.
- Suspension components: Checking shock absorbers, springs, and suspension arms for wear, damage, or leaks.
7. Exhaust Emissions
Your vehicle's environmental impact is assessed through its emissions:
- Exhaust system: Checking for leaks, corrosion, and secure mounting.
- Emissions test: Modern vehicles undergo a specific emissions test using a gas analyser to measure pollutants. The limits vary depending on the vehicle's age and fuel type.
8. Fuel System
The fuel system is checked for leaks and secure connections:
- Fuel pipes: Inspecting for leaks or damage.
- Fuel cap: Ensuring it seals correctly and is present.
9. Windscreen and Other Glass
Visibility is paramount for safe driving:
- Windscreen: Checking for chips or cracks in the driver's line of sight (larger than 10mm in the centre or 40mm on the edges).
- Other glass: Ensuring all other windows are secure and not excessively damaged.
10. Seats and Seatbelts
Safety restraints are rigorously checked:
- Seatbelts: Inspecting for wear, damage, and proper locking function.
- Seats: Ensuring they are securely fixed.
- Seatbelt anchorages: Checking for corrosion or damage.
11. Wipers and Washers
Ensuring you can maintain clear visibility:
- Wipers: Checking they operate effectively and don't streak the windscreen.
- Washers: Ensuring they spray water onto the windscreen.
12. Horn
The horn must be functional and audible:
- Horn operation: Checking it sounds correctly when operated.
MOT Test Failure Items and Common Reasons
While the MOT covers a wide range of checks, certain issues are more common than others when it comes to failing the test. At Absolute Autos, we pride ourselves on our honest approach; we will never recommend repairs that aren't absolutely necessary for your vehicle to pass the MOT. Here are some of the most frequent failure points:
| Component | Common Failure Reason | Impact on Safety |
|---|---|---|
| Tyres | Tread depth below 1.6mm, significant cuts or bulges | Poor grip, increased stopping distances, risk of blowout |
| Brakes | Ineffective braking, corroded or damaged pipes/hoses, worn discs/pads | Reduced stopping power, potential for brake failure |
| Lights | Faulty bulbs, incorrect aim, missing lights | Reduced visibility for the driver, inability to signal intentions, not being seen by others |
| Suspension | Worn or leaking shock absorbers, damaged suspension arms | Compromised handling, reduced stability, uneven tyre wear |
| Exhaust Emissions | High levels of pollutants due to engine faults or catalytic converter issues | Environmental pollution, potential engine performance issues |
| Windscreen | Chips or cracks larger than permitted in the driver's field of vision | Reduced visibility, potential for the windscreen to shatter |
What Happens If Your Vehicle Fails the MOT?
If your vehicle fails the MOT test, it is illegal to drive it on the road unless you are driving it to a pre-booked appointment for repair. The examiner will provide you with a 'refusal of an MOT test certificate' outlining the reasons for failure. These will be categorised as either 'dangerous' or 'major' defects.
- Dangerous defects: These issues pose an immediate and direct risk to road safety or have a serious impact on the environment. Your vehicle must not be driven until these are rectified.
- Major defects: These are issues that may not pose an immediate risk but will need to be repaired for the vehicle to be considered roadworthy.
At Absolute Autos, we will explain clearly why your vehicle has failed and provide you with a quote for the necessary repairs. We only carry out the work that is essential to pass the test, ensuring you don't pay for anything you don't need. Once the repairs are completed, your vehicle will need to be re-tested. If the original MOT was still valid, a partial re-test might be all that's required, often focusing only on the failed items. If the original MOT has expired, a full re-test will be necessary.
Frequently Asked Questions
Q1: How long does an MOT test take?
An MOT test typically takes around one hour to complete at our centre.
Q2: When should I get my MOT done?
Your vehicle will need its first MOT when it is three years old. After that, it needs to be tested annually. You can get an MOT up to one month before the current expiry date without changing your vehicle's current annual renewal date.
Q3: Can I drive my car if the MOT has expired?
No, it is illegal to drive a vehicle without a valid MOT certificate, unless you are driving it to a pre-arranged appointment for repair or to a pre-booked MOT test.
Q4: What happens if my car fails the MOT?
If your car fails, you will receive a refusal certificate detailing the reasons. You cannot drive the car on the road until the necessary repairs are made and it passes a re-test.
Q5: What is the difference between an MOT and a service?
An MOT is a legal requirement to ensure your vehicle meets minimum safety and environmental standards. A service is a routine maintenance check recommended by the manufacturer to keep your vehicle in good running order and prevent future problems. They are distinct but equally important for your vehicle's health and your safety.
Ensuring your vehicle is roadworthy is crucial for your safety and the safety of others. The MOT test is a vital part of this. At Absolute Autos, we are committed to providing a fair and efficient MOT service. If you have any questions about the MOT process or would like to book your test, please don't hesitate to contact us.
If you want to read more articles similar to Understanding Your MOT Test, you can visit the Automotive category.
