Understanding the Common MOT Failure Reasons and Their Causes

An MOT failure is also a frustration for drivers, especially if the vehicle was working fine. But there is always a valid reason behind the failure, whether the problem is related to safety, roadworthiness or environmental requirements. The faults noted during the MOT indicate a problem that drivers have ignored or were not able to identify.

Many of these issues develop gradually, while a few develop because of maintenance faults. By understanding the most common causes of faults and repairing them on time, drivers can avoid failing the test. This blog post will guide vehicle owners through the common failure reasons and ensure their vehicle is fully prepared for the test the next time.

Lighting Components Faults

Problems with lighting can lead to an MOT failure even when the car works fine. The headlamps, brake lights, indicators, and other lights should work properly for the vehicle to pass the MOT in Long Eaton. If the examiner finds even a single faulty lamp or a broken glass, the car will fail.

Lights are some of the easiest components to inspect before the test. Motorists can turn on all the lights, get out of the vehicle, take a round and see if they are working properly or not. Yes, brake lights can be a little tricky to check, but they can also be properly inspected with someone’s help.

Ask a friend or family member to check whether the brake light works properly when you hit the brake pedal. Indicators and hazard lights should work fine as well. Many drivers have said that their vehicle mostly failed the test due to issues with the lighting or signalling components. Hence, making these small checks for the lights can make a big difference in the end result.

Tyres Causing Failure

The tyres are carefully checked during the MOT as these affect the car's braking and steering performance. The minimum tyre tread requirement on most vehicles is 1.6 mm. The tyres that do not meet these standards are marked as having a dangerous defect during the MOT test.

Other factors that make the tyre a reason for failure are cuts, exposed cords, damage and improper tyre fitting. The drivers must check their tyres thoroughly and not just the outer rim. It is as important to check the air pressure as well, since under-inflated tyres cause uneven wear and handling issues. Addressing tyre concerns early is a straightforward solution to a serious issue.

Braking System Causing Failure

Issues with the braking system are another common cause of MOT failure, as issues with this immediately make a vehicle unsafe. Brake problems develop gradually, so drivers may not notice until they become serious. Worn brake pads, faulty parts, leakages, and ineffective brakes are some factors that influence the MOT’s outcome.

This includes the conditions and functioning of braking system components. Small braking problems are classified as major problems, while serious ones come directly under the dangerous category. Strange sounds, vibrations, vehicle pulling when braking or anything abnormal about the pedals requires professional attention. 

Suspension and Steering Wear

Both suspension and steering parts have to face constant stress and gradual wear the more the vehicle is driven. This natural wear is accelerated due to factors like potholes, driving on uneven surfaces or constant impacts. If suspension joints, bushes or bearings are excessively worn down, it can result in major defects.

The condition of shock absorbers and any significant leaking can impact the MOT result. The driver may experience unusual sounds, vibrations, and poor handling and steering, but some issues can only be identified with proper inspection. A vehicle might be operating normally even if its suspension and steering system is wearing down.

Problems with Visibility

The key to a safe driving experience is having a clear view of the road. Therefore, visibility is another key aspect of the MOT test. For this, the tester checks the driver’s field of vision, the windscreen’s condition and how well the wipers and windscreen washers work.

Any damage to the windscreen might affect the test outcome, depending on where and how extensive it is. If wipers are not able to clean the glass properly, it will also be noted as a fault and can cause failure.

To ensure such issues don’t become the reason for a car’s MOT failure, vehicle owners can get a car service in Long Eaton done. The service will include the vehicle’s complete maintenance to ensure each part meets the MOT standards. 

Conclusion

Being tested means drivers have to face both pass and fail as a result, but failing a test because of simple issues like the ones mentioned above is frustrating. Most MOT failures occur due to defects that build up over time or due to basic maintenance issues.

Lighting checks, tyre inspections, visibility checks and warning indicator checks performed throughout the year will assist motorists to identify problems on time. Major issues with brakes, suspension or emissions require thorough professional assistance. Therefore, the MOT has become a major part of vehicle ownership in the UK.