Essential Pre-MOT Checklist to Avoid Common UK Failures Complete with Cost Insights

Every year, millions of vehicles in the UK undergo the MOT (Ministry of Transport) test to ensure they meet safety and environmental standards. Sadly, many vehicles fail due to simple issues that could have been prevented. In this blog post, we will explore the most common MOT failures in the UK and provide a practical pre-MOT checklist to help you effectively prepare your vehicle for the test.

Checking tyre tread depth before MOT

The DVSA (Driver and Vehicle Standards Agency) has highlighted that many MOT failures stem from straightforward maintenance problems. By utilizing a pre-MOT checklist, you can save time, money, and the hassle of repeated tests.

Common MOT Failures in the UK

1. Lamp/Bulb Checks

Faulty lights are a leading cause of MOT failures. This includes headlights, brake lights, indicators, and fog lights. For instance, the DVSA reports that almost 10% of failures are linked to lighting issues. To avoid this, check your bulbs regularly and replace any that are blown.

2. Tyres

Tyres are vital for your vehicle's safety and performance. The legal minimum tread depth is 1.6mm, but replacing tyres when they reach around 3mm can significantly improve grip, especially on wet roads. Nearly 20% of MOT failures are due to tyre issues.

3. Brakes

Brakes must be in excellent condition. If you detect unusual sounds or feel a loss in stopping power, have them assessed before the MOT. Poor brakes contribute to about 17% of failures, so regular checks can make a huge difference.

4. Windscreen

A chipped or cracked windscreen can lead to a failed MOT. The DVSA states that around 5% of failures involve visual impairment from window damage. Make sure to repair any chips and check that your wipers function effectively to maintain clear visibility.

5. Number Plates

Your number plates must be clean, clearly displayed, and undamaged. They should meet legal standards, including size (520mm x 111mm for standard UK number plates) and font. Improperly displayed plates account for roughly 3% of failures.

6. Emissions Basics

Emissions standards are strict. Vehicles must not exceed specified limits; for petrol cars, this is often around 200-300 g/km for older models. A well-maintained engine will produce lower emissions. Regular servicing can prevent issues that lead to failed emissions tests.

7. Suspension

Worn suspension parts can affect steering and safety. Signs of suspension issues include a bumpy ride or noises when driving over bumps. Approximately 2% of MOT failures relate to suspension problems, so inspecting these components is essential.

8. Seatbelts

All seatbelts should function properly and display no signs of damage. Check that they retract smoothly and that buckle mechanisms work without issue. Faulty seatbelts can contribute to about 1% of failures but are crucial for safety.

9. Exhaust System

An exhaust that is noisy or has visible leaks may lead to a failure. Inspect for rust or damage, as exhaust issues are responsible for roughly 4% of MOT failures.

10. Fuel System

Keep an eye on the fuel system for leaks. This is a significant safety hazard and can lead to a failed MOT. Although not always quantified in failure statistics, ensuring there are no fuel leaks is vital.

11. Battery

A weak battery can cause starting problems. Inspect the battery for corrosion around terminals and ensure it is secured properly. Battery and electrical issues can take away precious points in the grading system.

12. Steering

Inspect your steering for any loose play or abnormal handling. Steering issues can pose serious safety risks and are critical for smooth driving.

13. Horn

A working horn is vital for alerting others. Test it before your MOT to ensure it functions correctly.

14. Mirrors

All mirrors must be intact and offer a clear view. Replace any cracked mirrors before the test. Inspecting mirrors helps to avoid safety hazards on the road.

15. General Condition

Lastly, ensure your vehicle is in overall good condition. A clean and well-maintained car is less likely to fail. Regular washing and servicing do not only keep aesthetics in check but also help in retaining value.

Pre-MOT Checklist

To help you get ready for your MOT, here’s a concise pre-MOT checklist:

• Inspect all lights and replace any faulty bulbs.

• Check tyre tread depth and pressure.

  
  

• Test brakes for responsiveness and listen for unusual noises.

• Examine the windscreen for chips and ensure wipers are functional.

• Clean number plates and confirm they are displayed correctly.

• Check emissions standards and consider a pre-MOT service.

• Inspect suspension components for any wear and tear.

• Examine the exhaust system for leaks or visible damage.

Keep this checklist in mind to optimize your chances of passing the MOT on the first attempt.

Inspecting a car's brake system before MOT

Cost Insights

The cost of an MOT test typically ranges from £30 to £54, depending on the vehicle type. If your vehicle fails, repairs can be financially impactful. For example, replacing a simple bulb can cost around £5, while brake repairs might set you back between £100 to £300 or even more, depending on the extent of work required.

Regular vehicle maintenance can prevent high repair bills. Consider investing in routine checks to avoid major problems that could lead to an MOT failure, ultimately saving you both time and money.

Clarifying Common Queries

What happens if my vehicle fails the MOT?

If your vehicle fails, you’ll receive a failure certificate outlining the reasons. You can then make the necessary repairs and return for a retest.

Is there a grace period for retests?

Yes, vehicles that fail can be driven to a garage for repairs, provided they are still roadworthy. However, if your MOT has expired, driving the vehicle is illegal until it passes the test.

How long do I have to get a retest?

You have 10 working days to get a retest after the initial test. After this period, you will need to pay for a full MOT test again.

Final Thoughts

Preparing for your MOT can feel overwhelming, but it doesn't have to be. By following this pre-MOT checklist and addressing common pitfalls, you can significantly reduce the likelihood of failure. Regular maintenance ensures your vehicle remains safe and roadworthy, saving you from unexpected repair costs.

Taking proactive steps to prepare your vehicle gives you peace of mind and the confidence to drive safely.