Five Reasons For MOT Failure Five Reasons For MOT Failure

An annual inspection of your vehicle’s safety and performance, an MOT is a legal requirement in the UK for any vehicle over three years old. Passing an MOT is a requirement for continued use of your vehicle on your road, with an MOT making recommendations for your vehicle to ensure it is safe for both yourself and for other drivers. Here, we take a look at five key reasons for MOT failure.


The primary reason for MOT failures in the UK, contributing to up to 19% of all failures due to their significant importance on the road to both drivers and other road users alike, ensuring your lights are all working properly is an essential part of an MOT test. Checks will include headlights, brake lights, indicators and registration plate lights.


The most important safety element of any vehicle, checking your brakes is a vital task carried out during your MOT, and it is essential they work effectively in order for you to pass. As of 2017, it’s been estimated that up to 14% of MOT failures are caused by faulty or damaged brakes, with excessive wear on brake pads or damage to brake discs and callipers recognised as potentially serious risks if left unchecked in the future.


An uneven, imbalanced, or weakened suspension on your vehicle can lead to serious issues, potentially even leading to unusual tread-wear patterns on your tyres which can pose significant safety concerns. Checking your own suspension is practically impossible at home, so it’s difficult for a vehicle owner to assess or understand this damage themselves. This is recognised in the statistics, with up to 12% of all failures in MOT tests due to issues with suspension.

Wheels & Tyres

Contributing to up to 10% of all MOT test failures, the importance of secure, safe and reliable wheels and tyres cannot be underestimated. Your wheel’s rims, nuts, bolts and bearings will all be assessed and checked for missing pieces, damage or distortions and your tyres will be checked for tread depth. In the UK, the law states that tread depth for a vehicle must be at least 1.6mm, meaning tyres that fall below this standard will result in an MOT failure.

Windscreen & Wipers

Visible damage to your windscreen will typically result in an automatic failure in an MOT test, particularly if the damage is extensive. This is also true of your wipers, which should also be in good condition and not cause smearing on your windshield. They should not jump, squeak, streak or judder, or distract the driver. Any damage to your windscreen or wipers that obscures view or distracts the driver’s attention from the road will result in an MOT failure.

Looking for an efficient, same-day MOT test in Stoke-on-Trent? At Adderley Green Garage, our expert team can conduct MOTs for cars, motorcycles, minibuses and motor homes, offering same-day services to get you back on the road in no time. Get in touch with us today.