05/03/2019
Ensuring your vehicle is safe and compliant on the road is paramount, and a key component of this is the MOT test. For vehicles over three years old in the UK, this annual inspection isn't just a formality; it's a legal requirement designed to guarantee that your car meets stringent road safety and environmental standards. Failing to present a valid MOT certificate can lead to hefty fines and render your vehicle illegal to drive. Therefore, understanding precisely what gets checked during an MOT and the underlying importance of these checks can significantly help you maintain your vehicle proactively, thereby increasing your chances of a successful test and, more importantly, ensuring your safety and that of other road users.
This comprehensive guide will delve into the critical areas examined during an MOT test, explaining the function and significance of each component. By familiarising yourself with the MOT checklist, you can better prepare your vehicle and gain peace of mind knowing it's roadworthy.
The MOT Checklist: A Deep Dive
The MOT test is a thorough examination of your vehicle's condition. It covers a wide array of systems and components, all of which play a role in the overall safety and environmental performance of your car. Here’s a detailed breakdown:
Vehicle Identification Number (VIN)
What Gets Checked: The tester meticulously verifies that the VIN is present on the vehicle and that it is legible and matches the documentation. This is a fundamental check to ensure the car being tested is the one registered.
Why: The VIN is the unique fingerprint of your vehicle, essential for identification and legal traceability. An incorrect or illegible VIN can lead to immediate failure, as it prevents accurate identification and verification against official records.
Registration Plate
What Gets Checked: The condition, security, and legibility of both the front and rear registration plates are assessed. This includes ensuring they are fitted correctly, are not damaged, and are in the correct format as stipulated by DVLA regulations.
Why: Legible and correctly displayed registration plates are crucial for identifying your vehicle, especially in traffic enforcement and for public safety. They must be easily readable from a distance.
Lights
What Gets Checked: A comprehensive check of all lights is performed. This includes headlights (dipped and main beam), rear lights, brake lights, indicators, and hazard lights. The tester will check their condition, operation, security, and correct colour output.
Why: Properly functioning lights are absolutely vital for visibility, both for you to see the road and for other road users to see you and understand your intentions (e.g., turning, braking). This is a major safety aspect.
Steering and Suspension
What Gets Checked: This category covers a range of critical components including the steering wheel, steering column, steering rack, power steering system, and all suspension parts like shock absorbers, springs, and linkages. The tester checks for excessive wear, damage, and proper operation.
Why: The steering and suspension systems are fundamental to maintaining control of your vehicle, especially during cornering and braking. Ensuring these are in good condition is vital for responsive handling and a stable ride.
Wipers and Washer Bottle
What Gets Checked: The operation and effectiveness of the windscreen wipers are tested, along with the presence and functionality of the washer bottle and its spray. The fluid level itself is not checked, but the system must be operational.
Why: Clear visibility is non-negotiable for safe driving. Effective wipers and washers are essential for clearing the windscreen of rain, dirt, and spray, especially in adverse weather conditions.
Windscreen
What Gets Checked: The condition of the windscreen is examined. Any chips or cracks in the driver's direct line of sight, or larger than 10mm in the driver's sight area, or 40mm elsewhere on the windscreen, will result in a failure.
Why: A clear and intact windscreen is critical for unobstructed visibility. Damage can distort your view, making it dangerous to perceive hazards or judge distances accurately.
Horn
What Gets Checked: The tester will check if the horn operates correctly and emits an appropriate sound. It must not be permanently sounded or be excessively loud or quiet.
Why: A functioning horn is a vital safety device used to alert other road users to your presence, particularly in emergency situations or to avoid potential collisions.
Seat Belts
What Gets Checked: All seat belts fitted to the vehicle are checked for their security, condition, and proper operation. This includes the webbing, locking mechanism, and the point where they attach to the vehicle.
Why: Seat belts are arguably the most critical safety feature in a vehicle, significantly reducing the risk of serious injury or fatality in the event of a crash. Their proper function is paramount.
Seats
What Gets Checked: The security of the driver's seat and all other seats in the vehicle is checked. They must be firmly fixed and not move excessively.
Why: Securely fixed seats are important for both safety and comfort. A loose seat can be a distraction or a hazard during sudden braking or impacts.
Fuel System
What Gets Checked: The fuel system is inspected for any leaks. The fuel cap is also checked to ensure it fastens securely.
Why: A secure and leak-free fuel system is essential for preventing fire hazards and ensuring the efficient and safe operation of the engine. Leaks can also contribute to environmental pollution.
Exhaust System and Emissions
What Gets Checked: The entire exhaust system is checked for security, condition, and any signs of corrosion or damage. Crucially, the vehicle's emissions are measured to ensure they comply with legal limits for its age and engine type.
Why: A properly functioning exhaust system not only reduces noise pollution but also significantly reduces harmful emissions, contributing to better air quality. Meeting emissions standards is a legal requirement.
Vehicle Structure
What Gets Checked: This is a critical safety check focusing on the vehicle's structural integrity. The tester examines the chassis, body panels, and suspension mounting points for excessive corrosion or damage, particularly in load-bearing areas.
Why: The structural integrity of a vehicle is fundamental to its ability to protect occupants in the event of an accident. Significant corrosion or damage can compromise the vehicle's strength and safety.
Doors
What Gets Checked: The operation of all doors, including the latches, hinges, and handles, is checked. Front doors must be able to be opened and closed from both the inside and the outside.
Why: Functional doors are necessary for safe entry and exit from the vehicle. In an emergency, quick and easy egress is vital.
Mirrors
What Gets Checked: The condition and security of all mirrors, including the interior rear-view mirror and exterior wing mirrors, are assessed. They must be securely fitted and free from significant damage.
Why: Mirrors are essential for drivers to monitor surrounding traffic, check blind spots, and manoeuvre safely. Clear and properly positioned mirrors enhance situational awareness.
Tyres and Wheels
What Gets Checked: This is a vital safety check. The tester examines the condition, security, and tread depth of all tyres. The minimum legal tread depth is 1.6mm across the central three-quarters of the breadth of the tread. Wheels are checked for damage, and their security is confirmed.
Why: Tyres are the vehicle's only contact point with the road. Proper tread depth is crucial for grip, traction, braking performance, and handling, especially in wet conditions. Damaged or insecure wheels can lead to catastrophic failure.
Brakes
What Gets Checked: The braking system receives a thorough inspection. This includes the condition and operation of the brake pedal, brake fluid levels (though not the fluid itself), brake pipes, hoses, callipers, discs, and pads. The performance of the brakes is also tested on rollers.
Why: Effective brakes are absolutely critical for the safe operation of any vehicle. They are essential for slowing down and stopping reliably, preventing accidents and ensuring control.
Battery
What Gets Checked: The security and overall condition of the vehicle's battery are checked. It must be securely fastened and not show signs of leakage or damage.
Why: A securely fastened and well-maintained battery is crucial for reliable starting and the proper functioning of the vehicle's electrical systems.
Electronic Stability Control (ESC)
What Gets Checked: For vehicles fitted with ESC, its functionality is checked. This typically involves ensuring the warning light operates correctly on startup and that the system is not showing any faults.
Why: ESC systems are advanced safety features that help drivers maintain control of the vehicle during extreme steering manoeuvres or in slippery conditions, significantly reducing the risk of skidding and accidents.
Why is the MOT Test So Important?
The MOT test serves multiple critical purposes:
- Road Safety: Its primary objective is to ensure that vehicles on the road are safe to drive, reducing the likelihood of accidents caused by mechanical failure.
- Environmental Protection: The emissions test ensures that vehicles meet the required standards for reducing pollution, contributing to better air quality.
- Legal Compliance: Driving a vehicle without a valid MOT certificate is illegal and can result in fines, penalty points, and even your vehicle being impounded.
- Vehicle Maintenance: The regular inspection encourages vehicle owners to maintain their cars properly, identifying potential issues before they become serious and costly problems.
Regular maintenance and a good understanding of what the MOT test entails can not only help you pass the inspection but also ensure your vehicle remains safe, reliable, and roadworthy throughout the year. By being proactive about your vehicle's care, you contribute to safer roads for everyone and enjoy smoother, more secure journeys.
If you're due for an MOT, or require any servicing or repairs to ensure your vehicle is in top condition, don't hesitate to reach out. Booking your car or motorcycle in for an MOT, repairs, or servicing at Pantech Auto Technicians is a straightforward way to ensure compliance and safety.
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