Car MOT Failure: Common Issues and How to Avoid Them

22nd May 2023

Keeping your car in roadworthy condition is not only essential for your safety on the road, but also a legal requirement in the UK. The annual car MOT is designed to ensure that your vehicle meets the minimum standards for safety, emissions, and overall performance. However, it’s not uncommon for cars to fail the MOT test due to a range of issues. Keep reading as we explore some common problems that can lead to MOT failure and provide you with some valuable tips on how to avoid them. By addressing these issues beforehand, you can increase your chance of passing the MOT and getting back on the road.

Lights and Signals

One of the most common reasons for MOT failure is faulty lights and signals. Make sure that all your exterior lights, including headlights, indicators, brake lights, and fog lights, are working correctly. Regularly check for any blown bulbs and replace them as soon as possible.

Tyres and Wheels

The condition of your car’s tyres is essential for passing the MOT test. Before booking your MOT Birmingham, inspect your tyres on a regular basis for tread depth, bulges, cuts, and uneven wear. In the UK, the legal minimum tread depth for tyres is 1.6mm across the central three-quarters of the tyre. Consider investing in a tread depth gauge to accurately measure the depth and determine if your tyres need to be replaced. Plus, it’s worth ensuring that your tyres are inflated correctly, as under- or over-inflated tyres can affect your car’s handling and increase the risk of failure.

Brakes

Your car’s braking system is a vital component of the vehicle’s safety. Worn-out brake pads, leaking brake fluid, or warped discs are common issues that could cause your car to fail the MOT. It’s important to regularly check the condition of your brake pads and discs. If you notice issues like reduced braking performance, squeaking noises, or a spongy brake pedal, it’s essential to have them inspected and replaced or repaired if needed.

Steering and Suspension

Issues with your car’s steering and suspension can have a significant impact on handling and safety and may cause an MOT failure. Worn-out suspension components, loose steering joints, or leaking shock absorbers can lead to a fail. Be aware of signs of suspension problems with your car, such as uneven tyre wear, excessive bouncing, or a pulling sensation when driving. If you notice anything out of the ordinary, have a professional mechanic inspect the suspension and steering system.

Exhaust Emissions

High exhaust emissions can cause your car to fail the MOT test. To minimise the risk of emission-related failures, it’s crucial to ensure that your vehicle is maintained correctly. Regular servicing, including replacing air filters and spark plugs, can help to optimise engine performance and reduce emissions. Stick to a regular oil change schedule, and make sure that you use the recommended fuel. Any issues such as visible smoke or a noisy exhaust should be checked promptly.

By addressing common issues that can lead to MOT failure, you can enhance your chances of passing the test and ensure your car remains safe on the road.