Why Winter Increases MOT Failures
Winter in the UK brings harsher conditions that put extra strain on vehicles. From icy roads to freezing temperatures, your car faces unique challenges that can lead to an increased risk of MOT failure. Seasonal car maintenance isn’t just about keeping your car safe; it’s also a smart way to avoid costly repairs and ensure a smooth MOT test.
Key Areas Affected by Winter Conditions
- Tyres and Tread Depth
- Cold, wet, and icy conditions demand good grip. Tyres with low tread depth or uneven wear are a common cause of MOT failures. Winter tyres or all-season tyres may be a worthwhile investment if you drive regularly in challenging conditions.
- Battery Health
- Car batteries are more likely to fail in cold weather. A weak battery can struggle to start your car, especially in sub-zero temperatures. MOT testers may not fail a vehicle purely for a weak battery, but battery-related issues can cause indirect problems during the test.
- Lights and Visibility
- With shorter days and foggy mornings, working lights are essential. MOT testers will fail cars with broken or dim bulbs, cracked lenses, or faulty wiring. Windscreen wipers and washer fluid levels also matter, especially in winter when grime builds up quickly.
- Brakes and Suspension
- Wet, salted roads can accelerate corrosion, which affects brake pipes and suspension components. Both areas are key parts of the MOT inspection and are more prone to wear in winter months.
- Exhaust and Emissions
- Cold starts often lead to increased emissions. For older vehicles, this can make the emissions test during an MOT more challenging to pass.
Winter MOT Preparation Checklist
To improve your chances of passing an MOT during winter, carry out these essential checks:
- Inspect tyre tread and pressure regularly.
- Test your car battery or consider replacing an older one.
- Check all lights, including fog lights, before the test.
- Top up washer fluid with winter-grade solution to prevent freezing.
- Book a pre-MOT check to catch issues early.
Using tools like Check MOT allows drivers to monitor their MOT history and plan ahead, reducing the chance of unexpected failures.
Benefits of Seasonal Car Maintenance
By preparing your vehicle for winter, you not only increase your chances of MOT success but also:
- Improve safety in difficult driving conditions.
- Extend the life of key components.
- Avoid costly emergency repairs.
- Stay compliant with UK road safety regulations.
FAQs
Does cold weather increase MOT failure rates?
Yes, winter conditions can accelerate wear on tyres, brakes, and batteries, leading to more MOT failures.
Should I switch to winter tyres for my MOT?
While not required, winter tyres provide better grip and can reduce the risk of failure due to tyre condition.
How can I prepare my car battery for winter?
Regularly check battery voltage, clean terminals, and replace older batteries before cold weather sets in.