The Most Common MOT Failures

mot failures

Every driver will always dread getting their MOT checked. It’s a nerve-wracking process that consists of sweaty palms and waiting for what seems like years to know whether your vehicle has passed or failed. MOTs are done to ensure that your vehicle is safe to drive and a professional will usually check your bulbs, reflectors, electrical equipment, steering, suspension and brakes. If you’re wondering what you can focus on to make sure your car passes, here are the most common MOT failures to prepare you.

Broken or faulty bulbs

Most people easily overlook their bulbs, which is why many drivers fail their MOTs. To avoid this problem, remember to check your front, rear, brake, fog, indicator and registration plate lights, as well as your rear reflectors. To help you identify any broken or faulty bulbs, ask a friend or a family member to assist you in checking.

Illegal tyre tread depths

According to the DVSA, 10% of all faults are related to tyres, which is usually due to the tyre treads. Since tyres are always in contact with the ground, it’s possible that it will take a toll on the tread depth. The minimum legal tread depth of a car is 1.6mm and the tyre tread of a new car is approximately 8mm. If you don’t want an accident to happen, make sure that your tyre treads are no less than 2mm in depth. If your treads are more than this depth, you will be prone to more accidents. To avoid failing your MOT, make sure you check that your tyre treads meet the minimum legal requirement. You should also make sure that you check them throughout the year.

A damaged suspension

Another common MOT failure is a damaged suspension, which can be caused by potholes and uneven road surfaces. If you have a damaged suspension, your wheel alignment, your tyres and your safety can get affected. In order to avoid this problem, make sure you have your car checked for any suspension issues by a professional since it’s hard to identify it by yourself. You can head to your local garage to do this. You should also make sure that your suspension is checked annually.

Brake issues

According to the DVSA, another common MOT failure is due to brake issues – they provide a figure of one in 10 (9.6%). You will usually have issues with your brakes if you hear strange noises, if your car begins to pull to one side or if you feel that you have spongy pedals. If you’re experiencing this problem, make sure you consult a professional immediately. Just like your suspension, you should also make sure that your brakes are checked annually.


These are the most common MOT failures that will hopefully prepare you for your own MOT check. If you need help or for any enquiries, don’t hesitate to consult our list of car services here or our list of car repair experts here. Alternatively, you can also contact our garage services from our list here.

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