A warning light, worn tyre or weak brake can be easy to put off when the car still feels normal on the daily commute. MOT testing is the annual roadworthiness check that helps identify safety and environmental issues before they become a bigger concern — or leave you unable to drive legally.

For most cars, the first MOT is due on the third anniversary of registration and then every year after that. It is not the same as a service. A service looks after the vehicle's condition according to the manufacturer's schedule. An MOT checks whether the vehicle meets the minimum legal standard for road use on the day of the test.

What the MOT covers

The MOT test is carried out at a DVSA-approved test station and covers a defined list of checks. These include:

Lights — headlights, brake lights, indicators, fog lights and number plate lights are checked for operation, alignment and condition.

Steering and suspension — the tester checks for play, wear and damage in steering components, shock absorbers, springs and related parts.

Brakes — brake performance is measured on a rolling road. The tester also checks the condition of discs, pads, drums, shoes, calipers and brake lines.

Tyres — tread depth must be at least 1.6mm across the central three-quarters of the tyre. The tester also checks for damage, uneven wear and correct fitment.

Seatbelts — all seatbelts are checked for condition, operation and secure mounting.

Windscreen and wipers — the windscreen must be free of significant damage in the driver's line of sight. Wipers must clear the screen effectively.

Horn — must operate correctly.

Exhaust and emissions — the exhaust is checked for leaks and excessive noise. Emissions are measured against the standard for the vehicle's age and fuel type.

Vehicle identification — the VIN and registration plate are checked.

Bodywork — sharp edges or damage that could injure a pedestrian may result in a failure.

What causes a fail

Common reasons for MOT failure include:

• Tyres below the legal tread depth
• Brake performance below the required standard
• A headlight or brake light not working
• Windscreen damage in the driver's line of sight
• Excessive exhaust emissions
• A seatbelt that does not latch or retract correctly
• Steering or suspension components with significant play or wear

Preparing your vehicle before the test

A pre-MOT check is a practical way to identify likely failures before the test date. This gives you time to arrange repairs, understand the costs involved and arrive for the test with confidence.

Precision Vehicle Repair Centre can help with MOT preparation, repairs and booking coordination. MOT testing is arranged through a DVSA-approved test station. Book a pre-MOT check or call 020 8807 2111 to discuss your vehicle.