Important Changes to MOT Legislation for 2018

As of the 20th of May, a new failure criterion for MOT testing is coming into force which will classify defects into three different categories: ‘Minor’, ‘Major’ and ‘Dangerous’. These stricter guidelines are the result of new testable items being introduced to crackdown on toxic emissions. Consequently, Diesel vehicles will be more heavily affected by these changes; one major alteration is that any diesel car which has Diesel Particulate Filter (DPF) either removed or altered with will automatically fail this new test. In addition to this, the revised smoke limit test will be used to determine any ‘visible smoke of any colour’ as a major fault within the vehicle.

The advisory category revamp is as follows:

  • Minor - Anything classified as a minor fault will not constitute a fail
  • Major – It will be a requirement for all major faults to be fixed and retested before the vehicle can be deemed roadworthy
  • Dangerous - If something is considered to be dangerous, this then constitutes an immediate MoT failure and renders the vehicle illegal to drive on public roads until these faults have been rectified


Other amendments at are likely to affect all cars, regardless of transmission, include but are not limited to: reversing light tests, brake fluid deterioration failures and further scrutiny of steering systems – a steering box with a heavy leak will result instant MOT failure. 

To ensure that your vehicle is in the best possible condition for both everyday usage and MOT purposes, we have compiled our top suggestions for continuous customer maintenance:

1. Lamps, Reflectors and Electrical Equipment

The highest national average failure rate is in within this category with 49.4% of cars without properly maintained lights and indicators. Be sure to check that these function correctly by regularly testing full and dipped beam headlights, rear and side lights, hazard lights as well as all four indicators.

2. Wheels and Tyres

The minimum legal requirement for tyre tread depth is 1.6mm – one way to determine whether or not your tyres are too worn is if you place a 20 pence coin in the area between the tread and if the raised area of the coin is above the tread, then the tyre needs replacing.

3. Registration Plates and VIN

Number plates must be clean and legible with no cracks in order for your MoT technician to consider these meet the fully visible requirement.

4. Windscreen Wipers

Firstly, top up screenwash if necessary, then check for splits in the windscreen wipers to ensure that they are able to adequately wipe away any residue for a clear driver’s view of the road.

5. Suspension

The suspension on your vehicle must be functioning to a certain standard; if you press down heavily on the front of your car and it bounces up and down then this a sign that the shock absorbers may be worn.

Our Hybrid vehicles can help to ensure that you are meeting the current legal road safety standards to save money for you and your business.



How we can help you

With so many changes just around the corner this is a good time to check through the vehicles that you use for your business. Do you have vehicles that are 3 years old or older that may be subject to these new MOT tests?

We have a team of fully trained technicians that can you talk you through the changes in details. Or, if you feel that now is the time to update your vehicles our fleet team can help you source newer / younger vehicles that are right for your business.

Contact us for more information.