What checks are included in an MOT test?

Does an MOT cover the engine and gearbox? What do they check during an MOT?

An MOT test checks key safety and emissions components of your vehicle to ensure it meets legal roadworthiness standards. It is not the same as a service and does not include checks on the engine, clutch, or gearbox.

The test covers areas such as brakes, tyres, seatbelts, exhaust emissions, lights, and visibility, ensuring the vehicle is safe to drive.

Car parts tested in the MOT

These are some of the critical parts of your car that will be checked in the MOT.

What’s Checked During an MOT?

🔍 Body, Structure & General Condition – No excessive corrosion, sharp edges, or dangerous damage.

🔍 Fuel System – No leaks; pipes and fuel cap secure.

🔍 Exhaust Emissions & System – Meets legal emissions standards; exhaust is secure and not too noisy.

🔍 Brakes – Functionality, performance, ABS warning lights, and efficiency tested.

🔍 Tyres & Wheels – Correct tread depth, size, and condition; TPMS warning light checked (post-2012 vehicles).

🔍 Lights & Indicators – Condition, operation, and aim, including LED and HID headlights.

🔍 Steering & Suspension – Condition, steering lock mechanism, and electronic steering warning lights.

🔍 Seatbelts & Airbags – Secure seatbelts; seatbelt pretensioners, load limiters, and airbag warning lights checked.

🔍 Doors, Mirrors & Visibility – Secure latches, correct mirror placement, and clear windscreen view.

🔍 Registration Plates – Correct format, securely attached, and legible.

🔍 Vehicle Identification Number (VIN) – Present and correctly displayed.

🔍 Horn, Wipers & Electrical Wiring – Functionality and safety checks.

Why Might a Car Fail an MOT?

❌ Tyres below the legal tread depth (1.6mm minimum).

❌ Worn brake pads or discs affecting performance.

❌ Faulty lights or indicators (bulbs, alignment, or operation issues).

❌ Excess emissions or a damaged exhaust system.

❌ Warning lights on the dashboard (ABS, airbag, ESC, TPMS, etc.).

What If My Car Fails Its MOT?

If your vehicle fails, the mechanic will provide a failure report (VT30) detailing the issues. You’ll need to arrange repairs before the car can pass a retest and be legally driven again.