Not all parts of your car are inspected during an MOT. The test focuses on safety and the environment: think brakes, lighting, steering, and emissions. Components such as the engine, gearbox, clutch, tires (for wear), and the overall mechanical condition of the car fall largely outside the scope of the MOT. A passed MOT therefore does not mean your car is in perfect condition throughout. Below you can read exactly what is not checked, what an MOT does and does not tell you, and when it makes sense to schedule an additional service.
Which components fall outside the MOT inspection?
The MOT only checks whether your car meets the legal safety and environmental requirements at the time of the inspection. Anything not directly related to road safety or emissions is not assessed. This means that a large part of your car’s mechanical condition is left out of the picture.
Specifically, the following components are not checked during an MOT:
- Engine and gearbox: Internal wear, oil pressure, and engine performance are not assessed.
- Clutch: Whether your clutch needs replacing is not tested.
- Tire wear: Tread depth is checked to a minimum (the legal minimum of 1.6 mm), but uneven wear or reduced grip are not assessed.
- Timing belt: A worn or nearly broken timing belt is not checked.
- Cooling system and fluids: Coolant, brake fluid, and engine oil are not checked for quality or level.
- Air conditioning: The operation of the air conditioning falls entirely outside the MOT.
- Electronics and onboard computer: Fault codes in the computer system are not read out.
- Shock absorbers: Only visually assessed, not functionally tested for damping force.
- Interior and comfort: Seats, seat belts (except their mounting points), and the dashboard are not inspected.
In short: the MOT is a snapshot covering a limited number of points. Anything not on the official inspection checklist is simply skipped.
Why aren’t all components checked during an MOT?
The MOT is defined by law and has a specific purpose: to verify that a car is safe to drive on public roads and meets environmental standards. It is not a comprehensive technical inspection. The government has deliberately chosen a targeted list of inspection points to keep the test practical, affordable, and standardized.
A full technical inspection of every car would take considerably more time and significantly increase costs for motorists. It would also blur the line between a statutory inspection and a service — two very different things. The MOT exists to keep dangerous cars off the road. Maintenance is the owner’s responsibility.
That is precisely why you cannot blindly rely on an MOT certificate as proof that your car is in good condition. The inspection says nothing about how much longer your car will last or what may be going on under the hood.
What does a passed MOT actually mean for your car’s condition?
A passed MOT means that your car meets the legal requirements on the inspected points at the time of the test. It says nothing about the overall mechanical condition, the remaining lifespan of components, or hidden defects that are not on the inspection checklist.
In practice, you can have a car with a brand-new MOT certificate that still:
- Has a worn timing belt that is on the verge of snapping
- Contains degraded brake fluid that has long since exceeded its boiling point
- Has tires with uneven wear that are already significantly reducing grip
- Has an engine that is burning more oil than normal
- Has fault codes in the system pointing to an upcoming problem
An MOT is therefore a minimum check, not a guarantee. It is comparable to a medical examination that only measures your blood pressure and weight: useful, but far from the full picture.
What should you check yourself in addition to the MOT?
Alongside the MOT, there are a number of components you should monitor regularly yourself or have checked during a service. These are the items the MOT does not cover, but which directly affect the safety and longevity of your car.
Check yourself or have checked:
- Engine oil: Check the level regularly, especially in older cars. Low oil can cause engine damage.
- Coolant: Check the level and condition. Degraded coolant provides less protection.
- Brake fluid: It is recommended to replace this every two years, regardless of the condition of the brakes themselves.
- Tires: Look out for uneven wear, cracks in the rubber, and tire pressure. Correct tire pressure also improves fuel economy.
- Timing belt: Check the replacement interval in your service booklet. This is usually specified by a certain number of miles or years.
- Air conditioning: Have the air conditioning checked for refrigerant and operation once every two years.
- Battery: A weak battery does not always give a warning. Have it checked if your car is more than four years old.
For a full overview of what is covered during a service, visit our page on repairs and maintenance.
When is an additional service advisable alongside the MOT?
An additional service alongside your MOT is a good idea if your car has not had a full inspection for a while, if you drive a lot, or if your car is more than five years old. But there are also specific warning signs that mean you should not wait.
Schedule a service if:
- Your car covers more than 15,000 kilometers per year and it has been a while since the last service
- A warning light is on, even if the car still seems to drive normally
- Your car pulls to one side, drives irregularly, or is using more fuel than usual
- Your MOT has just been passed but you have doubts about the overall condition
- You have bought a used car without a complete service history
- You have never had the timing belt replaced and the car has already covered more than 100,000 kilometers
A good rule of thumb: have your car fully checked at least once a year, even if the MOT has already been passed. This helps you avoid costly repairs that could have been prevented with timely maintenance.
How Autobedrijven Verdonk helps with your MOT and maintenance
At our garage in Veldhoven, we carry out official MOT inspections for all makes. But what sets us apart: we look beyond the inspection checklist. If we notice something that is not on the MOT but deserves attention, we will simply tell you honestly. No sales pitch — just straightforward advice.
What we do for you:
- Official MOT inspections for petrol, diesel, and electric vehicles
- Direct feedback on what has and has not been checked
- Advice on maintenance that falls outside the MOT, such as timing belts, brake fluid, and tires
- Full services for all makes, including Renault, Citroën, Peugeot, and Dacia
- Tire checks and tire services via Tyres-on
- Diagnostics and fault code reading
We are an authorized Renault dealer workshop and work as a universal garage for all other makes. Autobedrijven Verdonk also carries out maintenance and repairs for all other car brands.
Do you have questions about your MOT or would you like your car inspected? Get in touch or simply stop by in Veldhoven. And would you like to know more about who we are? Read more about our history.