Your car’s annual MOT might seem like a routine check, but it becomes a nerve-racking experience for many drivers. Every year, countless cars fail their MOT test due to issues that are often minor or preventable. Knowing what causes the most MOT failures and how to steer clear of them could save you time, stress, and money.
Whether you’re a seasoned driver or a new car owner, understanding the common MOT failures and how to sidestep them is essential. In this blog, we’ll explore the top reasons for MOT test failure, provide a handy MOT failure checklist, and share tips on passing MOT confidently.
Bromley Vehicle Test Centre offers reliable, efficient testing with no unnecessary upselling—just honest advice and service you can trust. Book your vehicle MOT in Bromley with us today for a stress-free experience.
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Need reliable car servicing and repairs? Visit Bromley Vehicle Test Centre Limited for expert maintenance, quality repairs, and one of the longest-standing MOT centres in Bromley—keeping your vehicle safe and roadworthy.
What Is MOT, And Why Does It Matter?
The car MOT test is a legal requirement for all vehicles over three years old in the UK. It ensures your car meets road safety and environmental standards. Failing your MOT prevents you from legally driving your car and could also mean costly repairs.
Common MOT Failures
Understanding the most common MOT failures can help you avoid them altogether.
Here are the main culprits:
1. Lights And Signalling Issues
Faulty bulbs are one of the leading reasons for MOT failure. This includes headlights, brake lights, indicators, and number plate lights. Often, these are simple to fix but easy to overlook.
Avoid MOT failure by checking all exterior lights before the test. Replace any faulty bulbs and clean lenses to ensure maximum visibility.
2. Tyres And Wheels
Worn or damaged tyres can lead to MOT failures. The legal minimum tread depth is 1.6mm, and any signs of uneven wear or damage can result in a failed test.
Use a tread depth gauge or the 20p coin test to check your tyres. Don’t forget to inspect the spare tyre, if applicable.
3. Brakes
Braking issues are serious and a common cause of MOT failures. If your brakes feel spongy, make noises, or the car pulls to one side, check them.
Have a mechanic inspect your brake pads, discs, and fluid levels. Keeping your braking system in good condition is crucial for passing the test and your safety.
4. Suspension And Steering
Worn-out suspension parts, leaking shock absorbers, or loose steering components can easily fail the vehicle MOT. Listen for clunks or rattles, especially when driving over bumps.
Check for unusual handling or noises, and have a professional inspect the suspension before the test if anything feels off.
5. Windscreen And Wipers
Cracks in the windscreen, especially in the driver’s line of sight, can lead to failure. Wipers must be in good condition and capable of clearing the windscreen effectively.
Top up your washer fluid and check that the wipers aren’t streaking or missing areas.
6. Car Warning Lights
Dashboard indicators, such as the engine warning light or airbag light staying on, can lead to failure. Many drivers ignore these lights, crucial in troubleshooting modern car warning lights.
Understanding and addressing car dashboard symbols early can help you avoid MOT failure. Don’t let a small sensor error become a big problem.
How To Avoid The MOT Failure
The best way to avoid MOT failure is regular maintenance. Here’s how you can prepare for MOT test day:
1. Perform A Pre-MOT Check
Use a simple MOT failure checklist to look over your car at least a week before your test:
- All lights and indicators are working
- Tyre tread and pressure
- Brake function and fluid levels
- Windscreen condition and wiper operation
- Horn, seatbelts, and mirrors
- No warning lights on the dashboard
2. Service Your Car Regularly
Routine car maintenance services can catch small issues before they become big ones. Regular oil changes, fluid top-ups, and filter replacements contribute to a smoother-running car—and a passed MOT.
3. Don’t Ignore Warning Signs
That rattle, flickering light, or odd smell? Get it checked. Addressing problems as soon as they arise is a proactive way to avoid being caught out during the test.
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How To Pass MOT With Confidence
Here are a few more tips to make sure your car is prepared for an MOT test:
- Clean your car – A tidy, well-kept car makes a better impression and helps testers access key areas.
- Check your registration plates – They must be secure, clean, and readable.
- Top up all fluids – Including oil, coolant, brake fluid, and windscreen washer.
- Inspect the exhaust system – Listen for loud noises that may indicate a leak or damage.
Book a pre-MOT inspection at your local garage if you’re not confident doing these checks.
Bromley Vehicle Test Centre: Helping You Stay Road-Ready All Year Round!
Most MOT failures are due to small, avoidable issues. Knowing the reasons for MOT failure and using a simple checklist to prepare for MOT test day can significantly boost your chances of passing on the first try.
Regular maintenance, paying attention to car warning light troubleshooting, and understanding car dashboard symbols are small steps that make a big difference. Don’t wait until the last minute—start preparing your car today.
Need an honest and reliable car MOT test? At Bromley Vehicle Test Centre, our expert team is here to help you pass with flying colours.
Book your test today and drive away with confidence.