What Is Checked in an MOT Test: A Clear Breakdown for Drivers

Many drivers in the UK think that the MOT test is a routine formality. It is a date in the calendar that you mark to drop your vehicle at an authorised MOT centre and hope to get a valid certificate.

But behind this simple process, a detailed inspection functions to check your car for safety, roadworthiness, and environmental benefits. Understanding what is included in an MOT Preston test can help you keep your car safe and avoid unnecessary failures.

In this blog, we will talk about the MOT test and the components that are checked during the test.

What Is an MOT Test and Why Does It Matter

The Ministry of Transport test (MOT test) is a mandatory annual inspection for vehicles over three years old in the UK.
This legal test ensures that your car meets the legal safety and environmental standards.

In simple words, this test is about making sure your car is safe for you, your passengers, and other road users. You have to note that MOT technicians just check your car and declare results; they do not replace or repair car parts to improve its performance.

You will get an MOT pass certificate if your car has no mechanical faults. On the other hand, your car with mechanical issues will fail its test.

Failing the MOT test means you cannot legally drive your car on public roads. As an exception, you can drive your car if you have already booked an MOT or you are going to a garage for repairs. 

MOT is important because it allows only safe cars on public roads. Indirectly, it inspires drivers to keep their cars in good condition and legal on the roads.

2. Lights and Indicators

Lighting defects are one of the most common reasons for MOT failure. During the test, mechanics check all your lights, including headlights, brake lights, indicators, reversing lights, number plate lights, and hazard lights.

The examiners ensure that:

• All bulbs are working correctly
• Lights are securely fitted and bright enough
• Headlights are properly aligned to avoid dazzling other drivers
• You can check your car lights at home before the test to avoid failure in the test.

Steering and Suspension

A car’s steering and suspension play a major role in control and comfort.
The MOT testers inspect components like the steering rack, power steering fluid, joints, springs, and shock absorbers.

They check for:

• Leaks or damage.
• Excessive free play in the steering wheel.
• Uneven suspension or noises while turning.
• Any looseness or imbalance can make your car unsafe at high speeds.

If your car pulls to one side, bounces excessively over bumps, or feels unstable, these warning signs may lead to an MOT advisory or failure.

Brakes

The braking system is one of the most crucial parts of the MOT inspection. During the MOT test, the tester checks brake pads, discs, and brake lines for wear or corrosion.

A roller brake tester measures braking efficiency and balance. Your car must stop evenly and within safe limits.
The handbrake (parking brake) is also examined to ensure it controls the speed of the vehicle on slopes.

Warning signs in the brake system include soft pedals, squealing sounds, or long stopping distances that indicate that your brakes need urgent attention.

Tyres and Wheels

Tyres make direct contact with the road surface, keeping your car stable. So, their condition directly affects safety.

During the test, the MOT examiners check tyres for:

Tread depth: The minimum limit of tread depth in the UK is 1.6 mm across the central three-quarters of the tyre.

Sidewall damage: Cuts, bulges, or cracks are common warning signals that occur in the sidewall.

Matching size and identical tyres: All tyres in your vehicle should be of the same size, and they should have the same features, like load index and speed rating.

Wheel alignment: Wheel alignment is not directly linked to tyre wear. But examiners check tyres for wear during the test.

Seat Belts and Seats

During the MOT test, testers check the following in seatbelts and seats:

• Belts latch properly and release easily.
• There are no frays or cuts.
• The retraction mechanism works properly.
• The front seats must be secure and adjustable.

Windscreen, Wipers, and Washer Fluid

Visibility is vital for safe driving.
Therefore, the testers check the windscreen for cracks, chips, or major scratches, especially in the driver’s view.

Exhaust and Emissions

MOT examiners check the exhaust system for leaks, corrosion, and noise level.

The emissions test measures pollutants from your car's exhaust. 

Petrol and diesel vehicles undergo different checks depending on their age and technology.
 

Bodywork and Structure

The MOT testers check bodywork for sharp edges, corrosion, and secure closures. They check the vehicle’s frame, body panels, doors, and bonnet for these issues.

Mirrors and Visibility

The MOT test examiners consider the following during the test:

• Presence and security of all mirrors.
• Clear, undamaged reflective surfaces.
• Proper view of the road and surrounding traffic.
• Even a small crack or missing mirror can cause a fail.

Preparing for an MOT: Simple Tips

You can increase your chances in the MOT if you check your car for simple checks. You do not need to be a mechanic to check your car. Various checks are simple, and you can easily avoid them.

You should consider the following checks before the test:

• Ensure all lights work.
• Top up the washer fluid.
• Check tyre pressure and tread.
• Clear any dashboard warning lights.
• Make sure registration plates are clean and readable.

These small actions can prevent unnecessary failures and retests.

Final Thoughts

During the MOT test, examiners check a lot of components that are vital for safety. Therefore, we certainly claim that it is a safety filter, protecting everyone on the road.

Passing your vehicle's MOT with minimal repairs is easier if you maintain your vehicle regularly through Car Service Preston and basic checks. A well-serviced car not only passes the MOT smoothly but also stays reliable and safe for every short and long trip.