MOT Help

MOT help

Suspension and Steering

The tester will check the movement and condition of the car’s steering and steering column. Under the bonnet the security, condition of steering and suspension mounts, looking for corrosion, cracking or any bolts that are loose or missing. Underneath, inspect all four wheels for excessive wear to the steering, suspension joints and mounting.


Any chips, cracks or stickers found over 10mm in the area in front of the driver’s seat. In the windscreen swept area any stickers, chips or cracks over 40mm will again cause the car to fail.


Inside check that the break pedal has an anti-slip device in good condition and that all your break lights work. Also that your hand break holds the vehicle on its ratchet and the break pedal does not reach the floor. Next it’s outside the vehicle to check for any damage to break pipes, hand break cables and brake fluid leaks. Break pads will also be checked and will be inspected to ensure there is at least 1.5mm of friction material on the pads.


Checked that the seatbelts are mounted correctly, the locking and release mechanism is working as it should and that the belts are not frayed or cut.


Your lights will be tested to ensure they are working properly, of good condition and are the correct colour. Hazard lights will be checked when the ignition is off and on. The tester will also go through and check all of the following: number plate lights, indicators lights, two rear reflectors, stop lights, headlights and side lights. The indicators, hazard signal and rear fog lights will also be checked that there is both visual and audible signals which can be heard or seen from the driver’s seat.

Registration Plates

Your registration plates need to be securely fitted and not faded. The letters need to be of the correct size, space and be readable from 20 meters.


Check the treads on your tyres to make sure that they are at least 1.6mm deep across the central three quarters of the tread width around the whole tyre. Tyres on the same axle will be inspected to ensure they are the same structure, type and size. Each tyre will also be checked for bulges or cuts.

Wipers and Washers

Washers and wipers will be checked to ensure they are clean the windscreen is in good condition.

Physical State of the Vehicle

Check for any major corrosion or welding repairs which could make the vehicle unsafe. The physical state of your vehicle will be inspected by the tester who will check the body, boot lid, doors, mirrors, fuel cap and seats of the car.

Exhaust System

Inspected to ensure there are no major leaks and that it is in good condition and the exhaust is not making excessive noise.


The tester checks the amount of carbon monoxide and hydrocarbons emitted from the vehicle using a special meter. During a test if the vehicle has a catalytic converter fitted the garage will check the air and fuel ratios.Diesel cars are checked using specialist equipment at very high speeds so as a result the MOT tester will check the calm-belt and engine oil level to verify the vehicle can cope with the high speed.

Vehicle Horn

The car’s horn is also checked to ensure it is loud enough and delivers a constant tone.