17/06/2009
Understanding the UK MOT Test: What's New?
The Ministry of Transport (MOT) test is a crucial annual inspection designed to ensure that vehicles operating on UK roads meet minimum safety and environmental standards. While the core purpose of the MOT remains the same – to keep our roads safe and reduce emissions – there have been several significant changes introduced over the years to keep pace with evolving vehicle technology and safety requirements. This article aims to demystify these changes, providing a comprehensive overview of what motorists need to know to ensure their vehicles remain compliant and roadworthy.
The MOT test is not a substitute for regular car maintenance. It's a snapshot of a vehicle's condition on a specific day. Therefore, proactive maintenance is always recommended. However, understanding the specific areas that the MOT checks, and any recent modifications to these checks, can help drivers prepare for their test and address potential issues before they become serious problems.
The Evolution of the MOT: A Timeline of Key Changes
The MOT test has undergone several revisions since its inception, each aimed at enhancing road safety and environmental protection. Understanding these changes provides context for the current testing procedures.
Early Days and Initial Requirements
When the MOT test was first introduced in 1960, it was a relatively basic check. Initially, it only applied to vehicles over 10 years old and primarily focused on lighting, steering, and braking. The scope and frequency of the test have gradually increased as vehicle complexity and public expectations for safety have evolved.
The 2018 Overhaul: A Significant Update
Perhaps the most substantial recent changes to the MOT test were implemented in May 2018. These updates were designed to make the test more relevant to modern vehicles and address new safety concerns. The key changes introduced in 2018 included:
- New Defect Categories: Defects are now categorised into three groups: Dangerous, Major, and Minor. A vehicle failing on any Dangerous or Major defect will automatically fail the test. Minor defects are recorded but do not cause an immediate failure, though they should be addressed to prevent future issues.
- Stricter Emissions Testing: The rules for testing diesel car emissions were tightened. Diesel cars fitted with a visible smoke-emitting device (like a diesel particulate filter or DPF) will fail if the device is missing or tampered with. New, more rigorous checks were introduced for particulate filters, ensuring they are present and effective.
- Introduction of Additional Checks: Several new checks were added, including:
- Checking for any visible defects to the body, chassis, or chassis frame for corrosion (more than just surface rust).
- Checking the condition of headlights, including the bulbs and their effectiveness.
- Checking the proper function of the Electronic Stability Control (ESC) and Daytime Running Lights (DRLs) where fitted as standard.
- Checking tyre pressure monitoring systems.
- Checking for fluid leaks that pose an environmental risk.
- Changes to What Fails the Test: Certain items that were previously advisory or resulted in a minor defect now lead to a failure. For example, if windscreen wipers or washers are not working, the vehicle will fail.
- Online MOT Service: The introduction of an online system for MOT results and history, making it easier for owners to track their vehicle's test history and for enforcement agencies to verify compliance.
Current MOT Testing Categories and What They Mean
Understanding the defect categories is vital for knowing the outcome of your MOT test:
| Category | Description | Outcome |
|---|---|---|
| Dangerous | A defect that could cause immediate danger to any person or endanger other road users. | Fail |
| Major | A defect that could compromise the safety of the vehicle or put other road users at risk. | Fail |
| Minor | A defect that has no obvious danger to safety but should be repaired as part of normal maintenance. | Pass (but advised for repair) |
Key Areas of the Modern MOT Test
The MOT test covers a wide range of components to ensure vehicle safety and environmental compliance. Here are some of the most critical areas:
1. Brakes
This is arguably the most critical aspect of the MOT. Testers will examine the condition, operation, and performance of the braking system. This includes checking brake fluid levels, the condition of brake pipes and hoses, the efficiency of the braking system, and the operation of the parking brake. Any signs of leaks, corrosion, or significant wear on brake pads and discs will be closely scrutinised.
2. Steering and Suspension
Proper steering and suspension are essential for vehicle control and stability. The MOT will check for excessive play in steering components, worn ball joints, damaged or corroded suspension springs, and the condition of shock absorbers. The integrity of the steering linkage and power steering system is also assessed.
3. Tyres and Wheels
Tyres are the only point of contact between your vehicle and the road, making their condition paramount. The MOT checks for tyre tread depth (minimum 1.6mm across the central three-quarters of the breadth of the tread), cuts, bulges, and general condition. Wheels are checked for damage, corrosion, and secure fitting. Tyre pressure monitoring systems (TPMS), if fitted, are also tested for correct operation.
4. Lights
All external lights – headlights, taillights, brake lights, indicators, and hazard lights – must be present, working correctly, and at the correct colour. The aim is to ensure visibility and clear communication with other road users. Headlight aim and effectiveness are also checked.
5. Exhaust Emissions
This is a key environmental check. Vehicles are tested for exhaust emissions to ensure they meet legal limits. For diesel vehicles, the presence and integrity of the diesel particulate filter (DPF) are crucial. Visible smoke from the exhaust is a definite fail. Petrol vehicles have their emissions tested using a gas analyser.
6. Body and Structure
The vehicle's structure must be sound and free from excessive corrosion or damage that could compromise its integrity. This includes checking the chassis, body panels, doors, seatbelts, and airbags. Any rust that penetrates the metal or creates holes in structural areas will lead to a fail.
7. Windscreen and Wipers/Washers
The driver's view of the road must be unobstructed. The MOT checks the windscreen for damage (chips or cracks larger than a specific size in the driver's line of sight), and the condition and operation of windscreen wipers and washers. If these are not working effectively, the vehicle will fail.
8. Fuel System
The fuel system is checked for leaks and the secure fitting of the fuel tank and pipes. The condition of the fuel cap, ensuring it seals properly, is also part of the inspection.
9. Seats and Seatbelts
All seats must be securely fitted, and all seatbelts must be present, in good condition, and operate correctly. The MOT tester will check for any damage or wear to the seatbelts and their mountings.
10. Other Safety Features
Depending on the vehicle's age and specification, the MOT may also include checks on:
- Horn operation
- Speedometer function
- Electronic Stability Control (ESC) and Daytime Running Lights (DRLs) where fitted as standard
- Tyre Pressure Monitoring Systems (TPMS)
- Doors, including their opening and closing mechanisms
- Mirrors
- Registration plates
What If My Car Fails its MOT?
If your vehicle fails its MOT, you cannot legally drive it on the road unless you are driving it to a pre-booked MOT test or to a place of repair. The failure certificate will detail the reasons for the failure. You have a few options:
- Repair and Re-test: Arrange for the necessary repairs to be carried out and then have the vehicle re-tested. If the repairs are done at the same test centre, the re-test may be free or discounted if done within a specific timeframe (usually within 10 working days).
- Take it Elsewhere: You can take your vehicle to another garage for repairs and a new MOT test.
It's essential to address all the defects listed on the failure certificate, especially those categorised as Major or Dangerous, to ensure your vehicle is safe and legal to drive.
Frequently Asked Questions About the UK MOT Test
Q1: How often do I need an MOT test?
New vehicles require their first MOT test when they are three years old. After that, all vehicles need an MOT test annually.
Q2: Can I drive my car if its MOT has expired?
No, it is illegal to drive a vehicle on public roads if its MOT certificate has expired, unless you are driving it to a pre-booked MOT appointment or to a place of repair.
Q3: What is the minimum tyre tread depth for an MOT?
The legal minimum tyre tread depth in the UK is 1.6 millimetres across the central three-quarters of the tyre's breadth. The MOT test checks this requirement.
Q4: Do I need to have my MOT done at an official MOT test centre?
Yes, your vehicle must be tested at an authorised MOT test centre. These centres are approved by the Driver and Vehicle Standards Agency (DVSA) and display a blue sign with three white dodos.
Q5: What happens if my car fails the emissions test?
If your car fails the emissions test, it means it is not meeting the required environmental standards. You will need to have the necessary repairs carried out to reduce emissions before it can pass the MOT.
Q6: Are there any exemptions from the MOT test?
Generally, all cars, motorcycles, and vans aged three years or more require an annual MOT test. There are very few exemptions, primarily for certain historical vehicles and vehicles used for specific commercial purposes under special arrangements.
Staying Compliant and Safe
The MOT test is a vital part of ensuring road safety and environmental responsibility in the UK. While the core principles remain, the test is regularly updated to reflect advancements in automotive technology and to address new safety concerns. By understanding the latest changes, the categories of defects, and the key areas of inspection, motorists can better prepare for their MOT and ensure their vehicles are maintained to a safe and legal standard. Regular maintenance, beyond the scope of the MOT, is always the best approach to keeping your vehicle in optimal condition and ensuring your safety on the road.
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