08/05/2020
The annual MOT (Ministry of Transport) test is a legal requirement for most vehicles over three years old in the UK. It's designed to ensure your car meets road safety and environmental standards. While some owners might feel a sense of dread at the thought of their car failing, a little proactive preparation can significantly increase your chances of a successful test. So, should you prepare your car for an MOT test? The unequivocal answer is yes. A well-prepared vehicle is not only more likely to pass but can also prevent unexpected, and potentially costly, repairs down the line. This guide will walk you through the key areas to focus on, helping you understand what the testers look for and how you can address common issues before your appointment.
Understanding the MOT Test
The MOT test checks the essential parts of your vehicle to ensure they meet legal standards. It’s not a test of the mechanical condition of the engine or gearbox, but rather a safety and emissions inspection. The test covers a range of categories, including:
- Lights: All lights must be present, the correct colour, and functioning correctly.
- Steering and Suspension: Components like ball joints, steering rack, and shock absorbers are checked for wear and tear.
- Tyres: Tyres must have a minimum tread depth of 1.6mm and be free from cuts or bulges.
- Brakes: The braking system is thoroughly checked for performance and condition.
- Exhaust System: The exhaust must be secure, free from leaks, and meet emissions standards.
- Seatbelts: All seatbelts must be present and in good working order.
- Bodywork: The vehicle's body must be free from excessive corrosion or damage that could be a hazard.
- Windscreen: The windscreen must be clear and free from damage in the driver's line of sight.
- Wipers and Washers: These must be effective in clearing the windscreen.
- Horn: The horn must be fitted and functioning.
Understanding these areas is the first step in effective preparation. Many common MOT failures can be easily rectified with a bit of pre-emptive maintenance.
Key Areas to Inspect Before Your MOT
While a professional mechanic will conduct the official test, there are several checks you can perform yourself at home. These simple inspections can help you identify and fix minor issues before they become major problems.
1. Lights
This is one of the simplest yet most common reasons for MOT failure.
- Walk around your car and check that all lights are working: headlights (both main and dipped beam), taillights, brake lights, indicator lights (front, rear, and side), fog lights (front and rear), and reversing lights.
- Ensure they are the correct colour and not damaged or obscured.
- A second person is invaluable for checking brake lights and indicators.
2. Tyres
Tyre condition is crucial for safety and a key part of the MOT.
- Check the tread depth. The legal minimum is 1.6mm across the central three-quarters of the tyre's width. You can use a tread depth gauge or a 20p coin: place the coin into the tread groove with the Queen's head facing outwards. If you can see the top of her head, your tread is likely too low.
- Inspect tyres for any cuts, cracks, bulges, or signs of uneven wear. Uneven wear can indicate an issue with wheel alignment or tyre pressure.
- Ensure tyre pressures are correct for your vehicle. The correct pressures are usually found in your car's manual or on a sticker inside the driver's door or fuel flap.
3. Windscreen and Wipers
Visibility is paramount for safe driving.
- Inspect your windscreen for chips or cracks. A chip larger than 10mm, or a crack over 40mm, in the driver's direct line of sight will result in an MOT failure.
- Ensure your windscreen wipers are in good condition and effectively clear the screen without smearing. If they're leaving streaks or skipping, consider replacing the wiper blades.
- Check that your screenwashers are working and the fluid level is adequate.
4. Brakes
While a full brake system check requires professional knowledge, you can perform a basic inspection.
- Listen for any unusual noises when braking, such as grinding or squealing.
- Feel for any sponginess in the brake pedal or if the car pulls to one side when braking.
- Check the brake fluid level. It should be between the minimum and maximum marks on the reservoir.
5. Fluids
Ensuring your car is topped up with essential fluids is vital for performance and can prevent minor issues from escalating.
- Engine Oil: Check the oil level using the dipstick. Top up if necessary. Low oil can cause significant engine damage.
- Coolant: Ensure the coolant level is between the min and max marks in the expansion tank. Overheating can lead to severe engine problems.
- Brake Fluid: As mentioned, check this level. Low brake fluid can indicate a leak in the system.
- Power Steering Fluid: Check the level if your car has power steering.
- Washer Fluid: Keep this topped up for visibility.
6. Exhaust System
Your exhaust system needs to be secure and not leaking.
- Listen for any loud noises coming from the exhaust, which could indicate a leak or a loose component.
- Visually inspect the exhaust system as much as you can for any obvious damage or rust holes.
7. Other Essential Checks
- Horn: Ensure it works when you press it.
- Seatbelts: Check that all seatbelts retract properly and the buckles are secure.
- Bodywork: Look for significant rust or sharp edges, particularly around wheel arches and the chassis, which could be dangerous.
- Mirrors: Ensure all mirrors are present, securely fitted, and not cracked.
Common MOT Failures and How to Avoid Them
Here's a table highlighting some of the most frequent reasons for MOT failure and what you can do about them:
| Common Failure Point | Reason for Failure | What You Can Do |
|---|---|---|
| Lights | Bulbs out, wrong colour, or damaged lenses. | Check all lights and replace bulbs as needed. Clean lenses. |
| Tyres | Insufficient tread depth, cuts, bulges, or incorrect pressures. | Check tread depth with a 20p coin. Inspect for damage. Inflate to correct pressures. |
| Brakes | Worn brake pads or discs, low fluid, or poor performance. | Listen for noises, feel for sponginess. Check fluid level. Professional inspection recommended. |
| Windscreen | Chips or cracks in the driver's line of sight. | Repair minor chips promptly. Larger damage may require windscreen replacement. |
| Wiper Blades | Worn or damaged blades that don't clear the screen effectively. | Replace worn wiper blades. They are inexpensive and easy to fit. |
| Exhaust | Leaks, excessive noise, or corrosion. | Listen for loud noises. Visual inspection for obvious damage. Professional check if concerned. |
| Suspension | Worn ball joints, shock absorbers, or springs. | Listen for knocking sounds over bumps. Professional inspection required. |
When Should You Get Your Car Ready?
It's best to start preparing your car at least a week or two before your MOT test is due. This gives you ample time to identify any potential issues and arrange for repairs if necessary. If you leave it too late, you might find yourself rushing to get work done, potentially at a higher cost, or worse, driving illegally if your current MOT has expired.
Should You Use a Specialist or Your Regular Garage?
Many main dealerships and independent garages offer MOT testing. If you have a trusted local mechanic who knows your car well, they are often a good choice. They may also be able to carry out any necessary repairs at a competitive price. However, if you're concerned about potential upselling, you can also use an independent MOT centre. Just ensure they are an authorised testing station.
What Happens If Your Car Fails?
If your car fails its MOT, it is illegal to drive it on the road, except to a pre-booked MOT test appointment or to a place of repair. The testing centre will provide you with a 'refusal of an MOT certificate', which details the reasons for failure. You will need to have the identified faults rectified and then present the vehicle for a partial re-test. Depending on the severity of the failures, this might involve a more focused inspection of the areas that failed.
Conclusion: Proactive Preparation is Key
Preparing your car for its MOT test isn't about trying to 'trick' the system; it's about ensuring your vehicle is safe and roadworthy. By conducting these simple checks yourself, you can save time, money, and potential stress. Addressing minor issues before they become MOT failures is a smart approach to car ownership. Remember, a well-maintained car is not only safer but also more reliable and potentially holds a higher resale value. So, take the time to prepare your vehicle – it’s an investment in your safety and peace of mind.
Frequently Asked Questions
Q1: How far in advance can I get my MOT done?
A1: You can get your MOT test done up to one month (minus one day) before your current MOT certificate expires. The new expiry date will be calculated from the original expiry date, so you won't lose any time.
Q2: What is the minimum tread depth for my tyres?
A2: The legal minimum tread depth for car tyres in the UK is 1.6mm across the central three-quarters of the breadth of the tread.
Q3: Can I drive my car if it fails its MOT?
A3: You can only drive your car if your current MOT has not expired and you are driving it to a pre-booked MOT test appointment or to a place of repair. Otherwise, it is illegal.
Q4: What should I do if I think my car is going to fail?
A4: It's best to perform the checks mentioned in this article beforehand. If you identify issues, get them repaired by a qualified mechanic before taking the car for its MOT test.
Q5: Are there any exemptions from the MOT test?
A5: Yes, vehicles manufactured before 1st January 1961 are exempt from the MOT test. Also, vehicles that have been registered for the first time less than three years ago are generally exempt, unless they are commercial vehicles like taxis or ambulances.
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