The MOT is effectively the examination of a motor vehicle's safety-related systems components to ensure that they have not worn to an excessive level which would otherwise render the vehicle unsafe for use on the road.
It is possible for items to pass the MOT inspection and yet still be regarded as past their service life at a routine service.
Fortunately garages which do have a current MOT Testing permit and the necessary specialised training will not judge normal wear of a component as being an MOT 'failure', whereas a less experienced servicing mechanic would not appreciate the distinction.
By utilising the services of an MOT Testing Centre you are likely to save time and money and reduce the risk of Appeals to the Vehicle Inspectorate where you car may have been failed on the wrong grounds.
Inside the car
Anti-lock braking system (if fitted) Warning lamp is checked for:
• Sequence of operation. Footbrake
• Reserve travel on the footbrake so that it does not go down to the floor
• Pedal rubber not worn to excess
• Correct operation of the servo assistance system.
This could be a handbrake or a footbrake.
Checked for reserve travel so that it does not reach the stops on application.
The mountings will be checked for security and /or corrosion.
Under bonnet checks • Master cylinder and servo unit are checked for fluid leaks with the engine on and the brakes applied.
• Servo unit will be checked to ensure it is operating correctly.
• Visible metal or flexible brake pipes will be checked for corrosion, condition, breakages or leaks.
Under Vehicle checks
With an assistant applying load to the footbrake:
• Flexible brake pipes and any other metal brake pipes visible beneath the car are checked
• Disks and drums checked for condition and contamination
• Brake back plates and calliper securing devices are checked for condition and security
• Condition of the brake pads will be checked if visible
• An assistant operates the handbrake while the condition of the linkages and/or cables is checked.
• On some vehicles there will be a brake compensating valve beneath the car which will need to be inspected for fluid leaks
Brake performance check
The performance of the front and rear brakes will be checked for efficiency and balance using specialised equipment.
Disc Brake Troubles
Drum Brake Troubles
Both front doors must be capable of being opened from the inside and outside and all doors must latch securely.
Tailgates, bootlids etc.
All these items, including the tailboards and dropsides of trucks must be capable of being secured in the closed position.
These are checked using specialised equipment, the details of the check depending on the year that the vehicle was first used on the road. Excessive smoking is a reason for failure. Diesel emissions are checked by using a smoke meter.
Any fuel leak will result in a fail. Checked under the bonnet and throughout the run of the fuel line from the fuel tank to the engine.
• The fuel filler cap must fasten securely
• The seal in the cap must not be torn, deteriorated or missing
• No other defect should be present which could cause fuel to leak out.
All required lights are checked for: • Operation.
Side lights and headlamps: • Acceptable make/model.
• Dip and aim must be within specified perameters Stop lights, indicators and hazard lights*
• Acceptable make/model
• Lights,indicators and hazard lights must not interfere with each other whilst in operation.
• Indicators, stop lights and hazard warning lights function. Rear fog lamps**
• Must be fitted to the centre or offside of the vehicle.
• Tell-tale must work.
• Must not be affected by other lamps and not be obscured.
• Must be red.
Number plate lamps
All original lamps must be fitted and working.
There must be two reflectors fitted reasonably symmetrically, securely attached and not obscured.
* Must be fitted to all vehicles first used on or after 1st April 1986, but if fitted, must be tested.
** Must be fitted to all vehicles first used on or after 1st April 1980.
REGISTRATION PLATES AND VIN* (Vehicle Identification Number)
For registered vehicles the plate must be: • Present
• Not faded, dirty or obscured
• Be composed with correctly formed letters and spacing
The VIN number must be • Permanently displayed
• Consistent · Legible.
* Required on all vehicles first used on or after 1st August 1980.
Most vehicles after 1965 must have seat belts, irrespective of that requirement, all seat belts fitted to any vehicle must be inspected for:
• Security of seat belt mountings and locking stalks
• Security and operation of the locking/release mechanism
• Condition of webbing
• Retraction of the belt (it is permissable to manually feed it in).
1. For technical reasons the inertia locking mechanism is not checked.
2. On some vehicles the belt is attached to the seat, in which case the security of the seat to the vehicle would also constitute part of the seat belt check.
Inside the car checks • Steering wheel and steering column:
• Steering wheel condition
• The steering wheel must be securely attached to the steering shaft
• The upper bearings of the steering column are inspected for wear
• The steering shaft is checked for excessive end float
• Clamping bolts security
• The split pins and locking nuts
• The 'free play' in the steering
• Flexible couplings and universal joints.
Under the bonnet checks (Vary according to the vehicle)
Some of these items cannot be observed from under the bonnet on some makes and models. However in all cases checks will be made for:
• The security of the steering rack or steering box and its mountings
• Any discernible play in the steering joints
• Swivel joints which form part of the steering system which can be readily inspected from under the bonnet will obviously be inspected.
• Whilst the vehicle stands on special Swivel plates the wheels are turned from lock to lock and checked to ensure that wheels and tyres do not foul of either the structure of the vehicle or any brake pipes or hoses.
• Wheel bearings are checked.
• Steering rack gaiters/front outer constant velocity joint boots are examined.
• Metal and rubber bushes are checked as
Under vehicle checks • All the steering joints.
• Power steering systems.
• Security of attachment of the steering rack or steering box is checked both with respect to tightness of the nuts and bolts, and structural cracking or corrosion of the vehicle chassis where it is attached.
• Also, split pins/locking nuts and other locking or retaining devices relate to steering components. Some cars have an element of rear wheel steering which is checked from beneath the car. The front suspension is checked, but also the rear for:
• Excessive wear to Wheel bearings.
• Condition of front drive shafts/CV joints.
Under bonnet checks • Upper suspension joints
• Any other suspension components which can be inspected from beneath the bonnet
Under vehicle checks
Both the front and rear suspension are checked to ensure.
• No split pins or nuts missing, no components broken or bent
• Road springs function effectively, no excessive wear
• Suspension joints function effectively, no excessive wear
• Shock absorbers must not leak and must be secure (the vehicle will be 'bounced' by the Tester to check that they damp the springs adequately).
Suspension is checked for wear by the assistant applying loads in various ways with the wheels jacked up whilst the Tester observes the result from beneath the vehicle.
A failure with respect to tyre wear will result where:-
The grooves of the tread pattern are not at least 1.6mm throughout a continuous band comprising:
• Central 3/4 of the breadth of tread
• Entire outer circumference of the tyre.
Tyres must be correctly matched with regard to: • Type
• Location on the vehicle with respect to the axles.
Also examined: • General condition of tyre
• Condition of valve
Tyres fail if they have serious cuts, bulges or other damage. The wear on the tyre is checked with a tyre tread depth gauge to ensure compliance. The tyres are examined to ensure that there is no fouling with any part of the vehicle.
The condition of the spare tyre is not part of the MOT.
Inspection to reveal: • Damage
• Distorted bead rims
• How securely attached to the vehicle
• No wheel-nuts or studs missing
An externally fitted spare wheel or spare wheel carrier must not be so insecure that it is likely to fall off.
Body condition and security • The vehicle body must not insecure or displaced so as to constitute a risk of loss of control of the vehicle when driven, or a danger to other road users.
• There must be no dangerous sharp edges or projections caused by corrosion or damage
A vehicle can fail with respect to corrosion for:
• Excessive corrosion in a 'prescribed area' - within 30 cms of certain components, e.g. brakes, steering, suspension, seat belt mountings etc.
• Excessive corrosion in a 'prescribed area', but which is likely to adversely affect the vehicle's brakes or steering.
'Excessive corrosion' can mean a hole or a significantly weakened structure.
Petrol Servicing A motor vehicle service is a series of maintenance procedures carried out at a set time interval or after the vehicle has travelled a certain distance. The service intervals are specified by the vehicle manufacturer in a service schedule and some modern cars display the due date for the next service electronically on the instrument panel.
The completed services are usually recorded in a service book which is rubber stamped by the service centre upon completion of each service. However at least one manufacturer (Mazda) now records services electronically on a database and prints them out for vehicle owners on request, so that it is not necessary for them to retain a stamped service book. A complete service history usually adds to the resale value of a vehicle. Services in the United Kingdom are trying to create tools to help car owners track this service information.
Mechanics at a Car Service Center.
Maintenance tasks commonly carried out during a motor vehicle service include:
Change the engine oil
Replace the oil filter
Replace the air filter
Replace the fuel filter
Replace the spark plugs
Tune the engine
Check level and refill brake fluid
Check level and refill power steering fluid
Check level and refill Automatic Transmission Fluid
Grease and lubricate components
Inspect and replace the timing belt if needed
Check condition of the tyres
Mechanical parts that may cause the car to cease transmission or prove unsafe for the road are also noted and advised upon.
In the United Kingdom, few parts that are not inspected on the MOT test are inspected and advised upon a Service Inspection.
Engine components (further inspections than MOT)
This Customer Requested A Full Body Kit For His Hyundai Coupe, This Includes, Wings, Bumpers, Side Skirts, Bonet, And Spoiler, This Got The Attention Of Professional Photographers And FastCarCentral.co.uk, Here Are Some Photos Of The Progression Of My Service.
Customer From Tanworth
This Car Was Currently Written Off By The Customers Insurers, With A
The Customers Has Asked Us To Put Right The Damage Of Their Car.
To Be Replaced:
• Front Wing (Right Hand Side)
• Front Wing Splash Guard (Right Hand Side)
• Front Wheel (Right Hand Side)
• Rear Wheel (Right Hand Side)
• Front Suspension Shock Absorber (Right Hand Side)
• Windscreen Bonding Kit
• A Post (Right Hand Side)
• Front Door Shell (Right Hand Side)
• Front Door Hinge (Right Hand Side Lower)
• Front Door Adhesive Moulding (Right Hand Side)
• Front Door Lock (Right Hand Side)
• Front Door Striker (Right Hand Side)
• Quarter Panal Rear Section (Right Hand Side)
• Quarter Adhesive Moulding (Right Hand Side)
• Quarter Glass (Right Hand Side)
• Front Tyre (Right Hand Side)
• CV-Sound Deadening Pad
• CV-Slide Glass Bonding Kit
Click The Image To See The Progression