MOT Checks: What to Expect

Understanding Your Vehicle's MOT

The MOT (Ministry of Transport) test is an annual assessment of your vehicle's roadworthiness, safety, and environmental impact. It's a legal requirement for vehicles over three years old in the UK, ensuring they meet minimum safety standards. Understanding what's checked during an MOT can help you prepare your vehicle and avoid common failure points. This comprehensive guide will walk you through the key components and systems examined during the test.

What Does an MOT Test Cover?

An MOT test is a thorough inspection that covers a wide range of vehicle components. The primary goal is to ensure your car is safe to drive and doesn't pose an environmental hazard. Here's a breakdown of the main areas inspected:

1. Structure and Vehicle Identification

The MOT tester will first check the vehicle's overall structure for significant corrosion or damage. This includes:

• Chassis and Frame: Ensuring there are no cracks, severe corrosion, or modifications that compromise structural integrity.
• Body Panels: Checking for sharp edges, protruding parts, or excessive damage that could be a hazard.
• Vehicle Identification Number (VIN): Verifying that the VIN is present, legible, and matches the vehicle's registration documents.
• Doors: Ensuring doors open and close correctly, both from the inside and outside, and that latches are secure.
• Bonnet and Boot: Checking that the bonnet and boot (or tailgate) can be securely opened and closed.

2. Lighting Equipment

Properly functioning lights are crucial for visibility and safety. The MOT checks:

• Headlights: Functionality, aim, and condition of both dipped and main beam.
• Tail Lights: Ensuring they are the correct colour and brightness, and are undamaged.
• Brake Lights: Checking that all brake lights illuminate when the brake pedal is pressed.
• Indicators: Functionality and synchronisation of front, rear, and side indicators.
• Number Plate Lights: Ensuring the rear number plate is illuminated.
• Reflectors: Checking for the presence and condition of rear reflectors.

3. Brakes

The braking system is one of the most critical safety components. The MOT involves:

• Service Brake: Testing the efficiency of the main braking system. This is done using a roller brake tester, which measures the braking force applied by each wheel.
• Parking Brake: Ensuring the handbrake or electronic parking brake can hold the vehicle securely.
• Brake Fluid: Checking for leaks and ensuring the fluid level is adequate.
• Brake Lines and Hoses: Inspecting for corrosion, damage, or leaks.
• Brake Discs and Pads: Checking for wear, damage, and proper function.

4. Steering and Suspension

These systems are vital for vehicle control and handling. The MOT examines:

• Steering Wheel: Checking for excessive play or looseness.
• Steering System: Inspecting for wear in components like track rod ends, ball joints, and power steering pipes.
• Suspension Components: Checking for worn or damaged shock absorbers, springs, and mountings.
• Wheel Bearings: Testing for excessive play.

5. Tyres and Wheels

Tyres are your car's only contact with the road. The MOT focuses on:

• Tyre Tread Depth: Ensuring a minimum tread depth of 1.6mm across the central three-quarters of the tyre's width.
• Tyre Condition: Checking for cuts, bulges, or damage to the tyre walls.
• Tyre Pressure: While not explicitly tested for correct pressure, under or over-inflated tyres can affect handling and wear.
• Wheel Condition: Inspecting wheels for damage or distortion.
• Wheel Nuts/Bolts: Ensuring they are present and secure.

6. Visibility

Clear visibility is essential for safe driving.

• Windscreen: Checking for damage or chips in the driver's line of sight that could impair visibility.
• Wipers and Washers: Ensuring they function correctly to clear the windscreen.
• Mirrors: Checking for the presence and condition of all required mirrors.

7. Fuel System

The MOT tests for:

• Fuel Leaks: Ensuring there are no fuel leaks from the tank, pipes, or filters.
• Fuel Cap: Checking that the fuel cap can be securely fastened.

8. Exhaust Emissions

A crucial environmental check:

• Emissions Test: Modern diesel and petrol vehicles undergo an emissions test to ensure they meet the required standards for their age and fuel type. This checks the amount of pollutants emitted.

9. Seats and Seatbelts

Safety restraints are paramount.

• Seatbelts: Checking for wear, damage, and proper functioning of all seatbelts, including pre-tensioners and warning lights.
• Seats: Ensuring front seats are secure and can be adjusted.

10. Other Checks

• Horn: Ensuring it works and emits a correct sound.
• Speedometer: Checking that it is functioning.
• Doors and Catches: As mentioned, ensuring they open, close, and latch securely.
• Engine: While the engine's performance isn't tested, checks are made for obvious leaks and the secure mounting of the engine.
• Battery: Ensuring it is securely fastened.
• Bodywork: Checking for sharp edges or protrusions that could injure pedestrians.
• Towbar: If fitted, checking its condition and security.

MOT Failure Items: Common Pitfalls

While the MOT covers many areas, some common reasons for failure include:

• Tyre Tread Depth: Below the legal minimum.
• Brake Performance: Insufficient braking efficiency.
• Lights: Faulty or incorrectly aimed lights.
• Windscreen Damage: Chips or cracks in the driver's view.
• Worn Suspension or Steering Components: Ball joints, track rod ends, shock absorbers.
• Corrosion: Significant rust on structural parts.
• Exhaust Emissions: Failing to meet pollution standards.

What Happens After the MOT Test?

After the test, you'll receive an MOT test certificate. If your vehicle passes, it will be issued with a VT20 certificate. If it fails, you'll receive a VT30 certificate, which details the reasons for failure. You can continue to drive your vehicle if it passes. If it fails, you must get the necessary repairs done and have the vehicle re-tested. In most cases, a vehicle that fails its MOT can still be driven to a pre-arranged appointment for repair or re-testing, provided it doesn't have a dangerous defect.

Preparing Your Vehicle for its MOT

To maximise your chances of passing your MOT, consider these pre-checks:

• Check Tyre Pressures and Tread: Ensure all tyres are correctly inflated and have adequate tread.
• Inspect Lights: Walk around your car and check all lights are working.
• Check Wipers and Washers: Make sure they clear the screen effectively.
• Review Windscreen: Look for any significant chips or cracks.
• Check Fluid Levels: Ensure brake fluid, coolant, and screenwash are topped up.
• Test Horn: Give it a quick blast.
• Ensure Seatbelts are Functioning: Check they retract smoothly and latch securely.

MOT vs. Service: What's the Difference?

It's important to understand that an MOT is a roadworthiness check, not a mechanical service. A service involves routine maintenance like oil changes, filter replacements, and general checks to keep your car running smoothly. An MOT only checks if your car meets the minimum legal standards for safety and environmental impact at the time of the test.

Frequently Asked Questions

Q1: How often do I need an MOT?

A1: For most cars, an MOT is required annually once the vehicle is three years old.

Q2: Can I drive my car if it fails its MOT?

A2: You can drive your car to a pre-arranged MOT test or repair appointment, provided it doesn't have a dangerous defect. Otherwise, it's illegal to drive.

Q3: What is the minimum tyre tread depth required for an MOT?

A3: The legal minimum is 1.6mm across the central three-quarters of the tyre's breadth.

Q4: Does an MOT check the engine?

A4: The MOT does not test the engine's performance but checks for secure mounting and obvious leaks.

Q5: Where can I get an MOT test?

A5: MOT tests can only be carried out at authorised MOT test centres, usually garages.

Conclusion

The MOT test is a vital part of ensuring road safety and environmental protection. By understanding the components and systems that are checked, you can better prepare your vehicle and have peace of mind knowing it meets the required standards. Regular maintenance alongside understanding MOT requirements will keep your vehicle safe and legal on UK roads.

If you want to read more articles similar to MOT Checks: What to Expect, you can visit the Maintenance category.