Every year, millions of vehicles undergo MOT tests in the UK, and while many pass without issue, others fail due to common issues that could have been prevented with proper maintenance and preparation. Understanding these common failures and how to avoid them is essential for every vehicle owner to ensure a hassle-free MOT experience. In this article, we explore the top 10 common MOT failures and provide tips on how to prevent them.
1. Lights and Signals
One of the most frequent reasons for MOT failures is faulty lights and signals. This includes issues with headlights, brake lights, indicators, and fog lights. To avoid this, regularly check all lights and signals on your vehicle to ensure they are working correctly. Replace any bulbs that are dim, flickering, or not functioning at all.
2. Tyres
Tyre-related issues, such as insufficient tread depth, uneven wear, or damage, are another common cause of MOT failures. Before your MOT test, check your tyre tread depth using a tread depth gauge and ensure it meets the legal minimum requirement of 1.6mm across the central three-quarters of the tyre. Additionally, inspect tyres for any cuts, bulges, or signs of damage, and replace them if necessary.
3. Brakes
Brake system failures, including worn brake pads, discs, or faulty brake lights, can lead to MOT failures. Regularly inspect your brakes for signs of wear and tear, such as squeaking or grinding noises, reduced braking performance, or a spongy brake pedal. Address any brake issues promptly by replacing worn components and ensuring the brake system is in good working order.
4. Suspension
Issues with suspension components, such as worn shock absorbers, bushings, or springs, can result in MOT failures. Conduct regular checks on your vehicle's suspension system, including visual inspections for leaks, damage, or excessive wear. If you notice any signs of suspension problems, have them inspected and repaired by a qualified technician.
5. Exhaust Emissions
Excessive exhaust emissions are a common reason for MOT failures, particularly for older vehicles. To reduce the risk of emission-related failures, ensure your vehicle is properly maintained and serviced regularly. Address any issues with the exhaust system, such as leaks, holes, or damaged catalytic converters, to minimize emissions and improve engine performance.
6. Windscreen
Cracks, chips, or damage to the windscreen can lead to MOT failures, especially if they obstruct the driver's view or compromise the structural integrity of the glass. Inspect your windscreen for any damage and repair or replace it as needed before your MOT test. Additionally, check the condition of the wiper blades and ensure they are functioning correctly.
7. Mirrors
Faulty or damaged mirrors can also result in MOT failures, as they are essential for visibility and safety while driving. Check all mirrors on your vehicle, including wing mirrors and rear-view mirrors, to ensure they are securely mounted, adjustable, and free from cracks or damage. Replace any defective mirrors before your MOT test.
8. Registration Plates
Incorrectly displayed or damaged registration plates are a common reason for MOT failures. Ensure your vehicle's registration plates are securely mounted, legible, and comply with legal requirements regarding font size, spacing, and visibility. Replace any damaged or illegible plates before your MOT test to avoid unnecessary failures.
9. Fluid Leaks
Leaks of oil, coolant, brake fluid, or other fluids can lead to MOT failures, as they indicate potential safety or environmental hazards. Regularly inspect your vehicle for any signs of fluid leaks, such as puddles or stains under the engine bay. Address any leaks promptly by identifying and repairing the source to prevent MOT failures.
10. Steering
Issues with the steering system, such as excessive play, stiffness, or vibrations, can result in MOT failures. Check your vehicle's steering for smooth operation, responsive feedback, and proper alignment. If you notice any abnormalities, have the steering system inspected and repaired by a qualified mechanic to ensure it meets MOT requirements.
Expert Insight
According to Dan Gunner, owner of Jordans Garage Godalming, "Many common MOT failures can be avoided with regular maintenance and inspections. By addressing minor issues before they escalate into major problems, vehicle owners can increase the likelihood of passing their MOT tests with ease."
Conclusion
Understanding the top 10 common MOT failures and how to avoid them is essential for every vehicle owner. By conducting regular maintenance, inspections, and addressing any issues promptly, you can improve your vehicle's chances of passing the MOT test with flying colors. Remember, prevention is key, so take proactive measures to keep your vehicle in optimal condition and roadworthy at all times.
