Whenever drivers are thinking of their vehicle’s MOT result, they will mostly consider its condition, like the tread depth on the tyres, the state of the brakes, and whether all the lights are working. But one highly impactful factor for a vehicle’s MOT result is the weather conditions. The weather conditions on the day of the test can influence various factors that are crucial for drivers to understand to increase their vehicle’s chances of passing. Many considered this a loophole, but it can help drivers prepare the vehicle for the test. This blog post will provide a detailed breakdown of the impact of weather on a vehicle’s MOT and some practical steps drivers can take to increase the vehicle’s chances of passing the test.
Impact of Cold Weather on Emissions Test
One common impact of cold weather on a vehicle’s MOT is on its exhaust emission test. It is mandatory for both petrol and diesel vehicles to meet a standard emission limit for them to pass their MOT. At the MOT centre in Thornton Heath, the examiner checks the performance of the engine, and the performance of the engine depends on how well it is warmed up. Drivers might have noticed that during cold weather conditions, the engine will take more time to heat up when compared to normal weather conditions. Until the engine gets warm enough, it has already generated a high amount of harmful gases like carbon monoxide and unburned hydrocarbons. Hence, if a driver takes their vehicle a short distance to the test centre on a cold winter day, the engine would not be warm enough to produce the best emission ratings. This can be quite problematic, especially for older vehicle owners, because the vehicle might not meet the minimum emission standards. To ensure drivers don’t have to face such issues, they can drive their vehicles for a reasonable distance before reaching the test centre. Drivers can also avoid booking an early morning appointment on a cold day as a precaution.
Impact of Hot Weather on Braking Performance
The next component impacted by the weather during the vehicle’s MOT is the brakes. During an MOT, the braking system is checked using a rolling road brake tester, which can be impacted by the rain outside. When a car is driven through water or rain, a thin layer of water is created on the brake surface. This can cause a temporary reduction in the friction between the disc and brake pads, which can lower the brake performance reading. During the test, a professional examiner will apply the brakes many times before giving an official result. Drivers should keep in mind that before leaving the test centre, they should check their braking performance. They should ensure that the brakes are working properly to know if it meets the minimum standards set by the DVSA.
Fog and Poor Visibility Make Lighting Issues Detectable
Having a foggy condition during the day of the MOT test can work against a driver’s favour, especially if the lights are checked. If a driver is driving to the test centre during fog, they have to use the fog light, the headlight has to be at full beam, and the other lighting systems are also used more, which the driver might have left unchecked. This means that if there is some kind of issue with the lighting system, the driver might not have gotten that resolved, and if the examiner notices it, which becomes more common during fog, the chances of the vehicle failing the test will increase. Therefore, drivers are advised to check all the lights and ensure that they are working and positioned properly before leaving for the test. This will only take a few minutes, but solving all the issues with the lighting system can increase the chances of your passing the test.
Car Service: The Right Solution
If drivers are looking for a way to eliminate the case of weather-related issues causing their vehicle to fail the test, then one of the best things for them to do is book a professional car servicing in Thornton Heath. Doing so before the day of the test can allow the technician to inspect the vehicle and address all the components, whose condition or performance can be impacted by weather conditions. A pre-MOT service also gives drivers the peace of mind that their vehicle meets DVSA standards before the examiner even begins the check.
Conclusion
Weather conditions play a more significant role in a vehicle’s MOT outcome than most drivers realise. Hence, drivers must understand the impact it can have on the MOT result. With a cold morning affecting the engine warm-up and emissions, wet brakes compromising the vehicle’s braking performance, and foggy conditions exposing issues with the lighting system, the issues are often overlooked. By checking the vehicle for such issues in advance and taking the required steps to fix them, drivers can have a smoother test done and quickly make their vehicle road legal.
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