MOT Test Changes Explained

The Driver and Vehicle Standards Agency (DVSA) periodically reviews and updates the MOT test requirements to ensure road safety and environmental standards are maintained. While there have been significant changes to the MOT test in recent years, it's important to clarify that the number of drivers *directly* affected by *new* or impending MOT rule changes is minimal, provided their vehicles are already maintained to a reasonable standard. The aim of these updates is to catch faults that could lead to accidents or excessive emissions, not to penalise diligent owners. However, understanding these changes can help you prepare your vehicle and avoid potential failure.

Understanding the MOT Test

The MOT (Ministry of Transport) test is an annual test of vehicle safety, roadworthiness, and exhaust emissions. It's a legal requirement for vehicles over three years old in the UK. The test covers a range of components, including lights, steering, suspension, brakes, tyres, and emissions. The primary goal is to ensure that vehicles on our roads are safe for drivers, passengers, and other road users, and that they meet environmental regulations.

Recent and Significant MOT Changes

The most substantial overhaul of the MOT test in recent memory came into effect on 20th May 2018. These changes were designed to modernise the test and align it with current vehicle technology and environmental concerns. It's crucial to understand these changes, as they form the basis of the current testing regime and will inform any future minor adjustments. The key changes introduced were:

New Emission Standards for Diesel Vehicles

One of the most notable changes was the introduction of a new emissions test for diesel cars. Previously, diesel vehicles were only tested for visible smoke. Under the new rules, emissions of all vehicles will be tested against current limits. Diesel cars manufactured from January 2006 onwards (Euro 4 standard) will be tested using a plausible particle counter (PPC). This device measures particulate matter (soot) in the exhaust. If the diesel particulate filter (DPF) has been tampered with or removed, the vehicle will fail. This is a critical point for owners of modern diesel vehicles, as a faulty or removed DPF can lead to a failed MOT and significant repair costs.

Revised Defect Categories

The defect categories were simplified into three: Dangerous, Major, and Minor.

• Minor defects: These will not cause the vehicle to fail the MOT, but they should be repaired as soon as possible.
• Major defects: These will cause the vehicle to fail the MOT. The vehicle must be repaired and retested.
• Dangerous defects: These are faults that pose a direct and immediate risk to road safety or have a serious impact on the environment. A vehicle with a dangerous defect will fail the MOT and must not be driven on the road until it has been repaired.

This clearer categorization helps drivers understand the severity of any issues found during the test.

New Test Items and Additional Checks

Several new items were added to the MOT test, including checks on:

• Tyres that are obviously under-inflated.
• Brake fluid.
• Headlight aim.
• Electronic parking aids (e.g., reversing sensors).
• Other previously optional checks were made mandatory.

The test also includes checks for visible fluid leaks that could be a hazard. Furthermore, reversing lights on vehicles first used from August 1, 2018, will be tested, as will daytime running lights on vehicles first used from April 1, 2018.

Changes to Failure Reasons

Some items that previously resulted in a minor defect or an advisory note now result in a failure. For example, if your dipped beam headlight isn't working, or if your daytime running lights are the incorrect colour, it will be a failure. Previously, some of these might have only been advisories.

Online MOT Service and Record Keeping

The DVSA also improved its online MOT service, allowing drivers to check their vehicle's MOT history online. This makes it easier to track previous test results and upcoming test dates.

Are There Any *New* Rules Coming Soon?

As of my last update, there are no widespread, imminent changes to the core MOT test procedures that would significantly affect a large number of drivers. The DVSA is committed to continuous improvement, and they do conduct consultations on potential future changes. However, these are typically incremental adjustments rather than a complete overhaul.

The focus remains on ensuring vehicles are safe and environmentally compliant. This means that regular maintenance and addressing any minor issues promptly will continue to be the best way for drivers to ensure their vehicles pass their MOT test, regardless of minor regulatory tweaks. The DVSA's stated goal is to make testing more risk-based, focusing on areas that pose the greatest danger. This might lead to more specific checks in the future, but the fundamental principles of the test remain.

How to Prepare Your Vehicle for the MOT

To maximise your chances of passing your MOT, consider these essential checks:

Tyres

Ensure your tyres have a minimum tread depth of 1.6mm across the central three-quarters of the breadth of the tread. Check for any cuts, bulges, or damage. Ensure they are properly inflated.

Brakes

Your braking system is crucial. While you can't fully test your brakes without specialised equipment, you can visually inspect brake fluid levels and check for any warning lights on your dashboard related to the braking system. Listen for any unusual noises when braking.

Lights

Walk around your vehicle and test all exterior lights: headlights (both dipped and main beam), fog lights, brake lights, indicators, and reversing lights. Ensure they are all working and the correct colour.

Wipers and Washers

Ensure your windscreen wipers are in good condition and effectively clear the windscreen. Check that your windscreen washer fluid is topped up and working correctly.

Exhaust System

Look for any signs of rust or damage to the exhaust system. While you can't test emissions yourself, a visibly damaged exhaust could indicate a problem.

Visibility

Ensure your windscreen is free from chips or cracks in the driver's field of vision. Check your mirrors are secure and correctly positioned.

Horn

The horn must work and be audible.

Common MOT Failure Items

Understanding the most common reasons for MOT failure can help you proactively address them:

Frequently Asked Questions

Q1: Will my car fail the MOT if it has a diesel particulate filter (DPF) removed?

A: Yes, if your vehicle was fitted with a DPF as standard, its removal or tampering will result in a failure. The new emissions test specifically checks for the presence and effectiveness of the DPF.

Q2: What is the minimum tyre tread depth required for the MOT?

A: The legal minimum tread depth for car tyres in the UK is 1.6 millimetres across the central three-quarters of the tyre's breadth.

Q3: Can I get an MOT certificate if my car has a dangerous defect?

A: No. A dangerous defect means your vehicle must not be driven on the road. It will fail the MOT, and you will need to have it repaired before it can be retested.

Q4: How often do I need to get an MOT?

A: For cars and other vehicles first registered more than three years ago, an MOT is required annually.

Q5: Where can I check my vehicle's MOT history?

A: You can check your vehicle's MOT history online via the GOV.UK website. You will need your vehicle's registration number.

Conclusion

The MOT test is a vital part of ensuring vehicle safety and environmental compliance. While the 2018 changes brought significant updates, particularly regarding diesel emissions, there are no indications of major new rules that will unexpectedly affect a large swathe of drivers. The key for any driver is to maintain their vehicle regularly and be aware of the common failure points. By conducting pre-MOT checks and addressing any potential issues proactively, you can significantly increase your chances of passing and keep your vehicle safe on the road.