Damaged Car Mirrors and the MOT Test

The MOT Test and Your Vehicle's Mirrors

The Ministry of Transport (MOT) test is a crucial annual inspection designed to ensure your vehicle is safe and roadworthy. A significant part of this assessment focuses on visibility, and rightly so, as being able to see and be seen is paramount for safe driving. Among the many components checked, the condition of your car's mirrors plays a vital role. But can a damaged mirror actually cause your vehicle to fail its MOT? The short answer is, it absolutely can, depending on the nature and severity of the damage.

Understanding Mirror Requirements for the MOT

The MOT test guidelines are quite specific about the condition of mirrors. The primary concern is that mirrors must provide a clear and unobstructed view of the road behind and to the sides of the vehicle. This means that any damage that compromises this visibility is likely to result in a fail. Let's break down what the testers are looking for:

Types of Mirror Damage and Their Implications

When we talk about a 'damaged' mirror, it can encompass a range of issues. Understanding these will help you assess whether your mirrors might be a problem:

• Cracked or Broken Mirror Glass: This is perhaps the most common type of damage. If the glass of your wing mirror or interior mirror is cracked, shattered, or missing in a way that obstructs your view, it will almost certainly lead to a failed MOT. The severity of the crack matters; even a small crack that significantly impairs visibility can be an issue.
• Loose or Misaligned Mirrors: If your mirrors are loose and vibrate excessively while driving, or if they are so misaligned that they cannot be adjusted to provide a proper view, this can also be a reason for failure. The mirror needs to be securely fixed and capable of being adjusted by the driver.
• Missing Mirrors: For most vehicles, a certain number of mirrors are mandatory. Typically, this includes at least one door mirror (wing mirror) and an interior mirror. If a mandatory mirror is missing, your vehicle will fail the MOT. The exact requirements can vary slightly depending on the vehicle's registration date, but generally, a clear view to the rear is essential.
• Obscured Mirrors: This can happen due to various reasons, such as excessive dirt, condensation, or even stickers placed on the mirror's surface. While dirt and condensation are usually temporary issues that can be resolved before the test, permanent obstructions like stickers will cause a fail.
• Corrosion Affecting the Mirror: While less common, if corrosion affects the mirror housing to the point where the mirror is loose or cannot be adjusted, it could lead to a fail.

Specific MOT Regulations for Mirrors

The Driver and Vehicle Standards Agency (DVSA), which oversees the MOT test in the UK, provides detailed guidelines for testers. These guidelines explicitly state the conditions under which a vehicle will fail due to mirror defects. The key principle is always driver visibility. If the damage to a mirror prevents the driver from seeing clearly, or if it's a mandatory mirror that's missing or severely damaged, it's a fail.

Mandatory Mirrors: What's Required?

The number and type of mirrors required can depend on the age of your vehicle:

• Vehicles registered on or after 1 January 2010: Must have two door mirrors (one on each side) and an interior mirror.
• Vehicles registered before 1 January 2010: Must have at least one door mirror and an interior mirror. However, if the interior mirror is missing or not suitable for use (e.g., it's a camper van conversion where the interior mirror offers no rearward view), then two door mirrors are mandatory.

It's important to note that the condition of these mirrors is just as critical as their presence. A crack that creates a blind spot or distorts the image will be a fail, even if the mirror itself is present and seemingly secure.

Can a Small Crack Cause a Fail?

This is a common question, and the answer is nuanced. A very minor crack that doesn't significantly impair the driver's view might pass. However, testers have discretion, and if they deem that the crack, no matter how small, could potentially lead to a distortion or a blind spot, they are within their rights to fail the vehicle. It's always better to err on the side of caution. If the crack is large enough that you can see it easily, it's probably best to get it replaced before your MOT.

The Importance of a Clear View

The purpose of mirrors is to allow the driver to monitor traffic and hazards around the vehicle. This is crucial for safe lane changes, reversing, and general awareness of the driving environment. A damaged mirror compromises this essential function. Imagine trying to check your blind spot through a spiderweb of cracks – it's impossible to be certain of what you're seeing. This is why the MOT test places such a strong emphasis on the condition of your mirrors.

What to Do if Your Mirrors Are Damaged

If you suspect your mirrors might be damaged or are unsure about their condition, it's wise to get them checked by a qualified mechanic or garage before your MOT test. They can assess the damage and advise on the best course of action. In most cases, replacing a damaged mirror is a relatively straightforward and inexpensive repair. Here’s what you should consider:

• Identify the Damage: Carefully inspect all your mirrors (interior and door mirrors) for cracks, chips, looseness, or any other issues that might affect visibility.
• Consult a Professional: If you're unsure, take your car to a mechanic. They can give you an expert opinion on whether the damage is likely to cause a fail.
• Repair or Replace: For most common vehicles, mirror replacements are readily available. You can often purchase replacement mirror glass or complete mirror units from motor factors or online retailers. Fitting them yourself might be possible for some, but professional fitting is recommended to ensure they are secure and correctly aligned.
• Pre-MOT Check: Many garages offer pre-MOT checks where they can identify potential issues before the official test. This can save you the inconvenience and cost of a re-test.

Common Mirror-Related Failures in the MOT

To give you a clearer picture, here are some common scenarios that lead to a mirror-related MOT failure:

Frequently Asked Questions (FAQs)

Q1: My wing mirror has a small chip, but the glass is intact. Will it pass?
A: It depends on the size and location of the chip. If the chip is minor and does not distort your view or create a blind spot, it might pass. However, if it's noticeable or affects visibility, it's best to get it checked.

Q2: I only have one door mirror (driver's side). Will my car fail its MOT?
A: For vehicles registered before 1 January 2010, having only the driver's side door mirror (plus an interior mirror) is generally acceptable. For vehicles registered on or after 1 January 2010, you need mirrors on both sides, so yes, it would likely fail.

Q3: Can I just tape up a cracked mirror?
A: While temporary, this is unlikely to pass the MOT. Taping a mirror can be considered an obstruction, and if the crack is significant, it will still impair your view. It's best to replace the mirror unit or at least the glass.

Q4: What if the condensation on my mirror is so bad I can't see out?
A: Condensation is a temporary issue. You will be expected to clear it before the test. If the mirror itself is damaged in a way that traps moisture, it could be a fail.

Q5: How much does it typically cost to replace a car mirror?
A: The cost can vary greatly depending on the make and model of your car and whether you're replacing just the glass or the entire mirror unit. Simple mirror glass replacements can cost from around £20 to £100, while a full electric mirror unit could be several hundred pounds, plus fitting costs.

Conclusion: Prioritise Your Mirrors for a Smooth MOT

In summary, a damaged mirror can indeed cause your vehicle to fail its MOT test, particularly if the damage impairs your ability to see clearly or if it involves a mandatory mirror that is missing or severely compromised. The MOT test is fundamentally about safety, and clear visibility is non-negotiable. Regularly inspecting your mirrors and addressing any damage promptly will not only help you pass your MOT with flying colours but, more importantly, will contribute to safer driving for yourself and others on the road. Don't let a cracked or loose mirror be the reason for an unnecessary failure; keep them in tip-top condition.

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