03/09/2009
When it comes to maintaining your vehicle, every component plays a crucial role, no matter how small it may seem. The car’s side mirror, for instance, is often overlooked until it’s damaged, yet its purpose is paramount: ensuring you have a clear and unobstructed view of what’s happening behind and alongside your vehicle. Without it, your safety on the road is significantly compromised, and you could even fall foul of legal requirements. But what happens when this vital component gets damaged? What's the typical cost to replace a car side mirror in the UK, and what factors influence this price?
In this comprehensive guide, we'll delve into the various aspects that determine the total cost of a side mirror replacement. We'll explore the differences between professional installation and tackling the job yourself, the impact of part types, and the role of modern vehicle technology. By the end, you'll have a clear understanding of what to expect and how to approach a side mirror replacement, whether you're heading to a garage or planning a home repair.

How Much Does a Car Side Mirror Replacement Cost?
The cost of replacing a car side mirror can vary quite significantly, primarily depending on whether you opt for a professional service or decide to undertake the repair yourself. On average, if you choose to have a professional garage or dealership replace the side mirror, you might expect to pay anywhere from £100 to £400. This price typically encompasses both the cost of the replacement part and the labour charges for installation.
However, if you're comfortable with a bit of a DIY challenge and have the necessary tools and confidence, you could drastically reduce this expense. Purchasing the mirror part yourself and fitting it at home could bring your total cost down to a much more palatable £20 to £150. This considerable saving highlights the potential benefits of a do-it-yourself approach, provided you're confident in your abilities.
Cost Comparison: Professional vs. DIY
To give you a clearer picture, here's a general breakdown of the expected costs:
| Method of Replacement | Estimated Cost Range (UK Pounds) | Pros | Cons |
|---|---|---|---|
| Professional Installation (Garage/Dealership) | £100 - £400+ | Expert installation, warranty on parts & labour, convenience, peace of mind. | Higher cost, may require booking an appointment. |
| DIY Installation (Purchasing Part Yourself) | £20 - £150 | Significant cost savings, satisfaction of doing it yourself, immediate repair possible. | Requires tools & expertise, risk of further damage, no warranty on labour. |
It's important to remember that these are average figures. The actual cost can fluctuate based on numerous variables, which we'll explore in detail below.
Key Factors Affecting Side Mirror Replacement Cost
Several critical factors come into play when determining the final price of a side mirror replacement. Understanding these can help you anticipate expenses and make informed decisions.
1. OEM vs. Aftermarket Parts
One of the most significant cost determinants is the type of replacement part you choose:
OEM (Original Equipment Manufacturer) Parts: These are genuine parts produced by the vehicle's manufacturer or a supplier that makes parts for the manufacturer. They are identical to the mirror originally fitted to your car at the factory, ensuring perfect fitment, quality, and often come with a manufacturer's warranty. However, this premium quality comes at a higher price. Expect to pay more for OEM mirrors, especially for premium or luxury car brands.
Aftermarket Parts: These mirrors are manufactured by third-party companies, not the original car maker. They are designed to fit a specific vehicle make and model but may not be an exact replica in terms of materials or features. The primary advantage of aftermarket parts is their lower cost, often significantly cheaper than OEM alternatives. While the quality can vary, for a side mirror, the difference might be negligible unless your mirror has complex electronic features. Always ensure the aftermarket part is certified or from a reputable brand to avoid issues with fitment or functionality.
2. Professional vs. DIY Installation
As highlighted earlier, your choice of installer will heavily influence the cost:
Professional Installation: Opting for a professional garage or dealership means you're paying for their expertise, specialist tools, and the convenience of a guaranteed repair. Dealerships typically charge more than independent local mechanics due to higher overheads and often using OEM parts. Labour rates also vary geographically; urban areas or cities generally have higher labour costs than rural communities. While more expensive, this option provides peace of mind, especially if you're not mechanically inclined or if the mirror involves complex wiring.
DIY Installation: If you possess the right tools, a workshop manual, and a good level of mechanical aptitude, performing the installation yourself can lead to substantial savings. However, a word of caution: if you're unsure about the process, you risk causing further damage to your car's bodywork, paint, or electrical system, which could ultimately cost more than a professional repair. Always research thoroughly and ensure you have the correct tools before attempting a DIY replacement.
3. Manual vs. Automatic/Advanced Mirrors
The sophistication of your car's side mirror technology is a major cost driver:
Manual Mirrors: Found on older or more basic car models, these mirrors are manually adjusted from inside the car or by hand from the outside. They are the simplest and cheapest to replace, often costing less than £50 for the part itself.
Automatic/Electric Mirrors: Most modern cars feature electric mirrors that can be adjusted via a control switch inside the cabin. These incorporate small motors and wiring, increasing their cost to typically £50-£150 for the part.
Advanced Feature Mirrors: This is where costs can skyrocket. Premium and luxury vehicles, or even higher trim levels of standard cars, often come with an array of integrated technologies within the side mirror assembly. These can include:
- Heated elements to de-ice/defog
- Integrated LED turn signal indicators
- Power-folding mechanisms
- Auto-dimming functionality
- Blind-spot monitoring sensors
- Lane-keeping assist cameras
- Memory functions (linking mirror position to driver profiles)
- Puddle lights
Each additional feature adds complexity and components, significantly driving up the price. For example, a complete side mirror unit for a luxury brand like BMW or Mercedes-Benz, equipped with lane assist and cameras, can easily exceed £1000, sometimes even £1500 per mirror. This high value is unfortunately why these parts are sometimes targeted by thieves.
4. Insurance Coverage
Generally, a side mirror that simply wears out or breaks due to age or a minor knock (e.g., hitting a bollard in a car park) is not covered by standard car insurance. You would typically bear the cost yourself in such scenarios.
However, if the mirror was damaged as a direct result of a covered accident (e.g., a collision with another vehicle, vandalism, or a major incident), your insurance policy might cover the repair or replacement costs under your comprehensive or collision coverage. It's crucial to consider your deductible in such cases. If your deductible is, for example, £500, and the mirror replacement costs £300, it would not be financially sensible to file a claim, as you'd pay the entire cost yourself and potentially impact your no-claims bonus. Always weigh the repair cost against your deductible and the potential impact on future premiums.
When Should a Side Mirror Be Replaced?
While a shattered mirror after an accident makes replacement obvious, other situations might be less clear-cut. Knowing when to replace your side mirror is crucial for both safety and legal compliance.
Here are some scenarios where replacement is advisable:
Compromised Visibility: If the mirror glass is cracked, scratched, or has significant condensation build-up that cannot be cleared, your ability to see clearly behind you is impaired. This is a major safety hazard.
Non-Functional Mechanical/Electrical Components: If your electric mirror no longer adjusts, folds, or if integrated features like turn signals, blind-spot monitoring, or heating elements fail, the mirror is no longer fully serving its purpose. While the glass might be intact, the functionality is compromised.
Loose or Damaged Housing: If the mirror housing itself is cracked, loose, or unable to hold the mirror securely in place, it could vibrate excessively, making it difficult to use, or even fall off completely.
Missing Mirror: This is an obvious one, but driving without a functional side mirror (especially the driver's side) is illegal in the UK and extremely dangerous.
If the mirror is still functional but cosmetically damaged (e.g., a scuff on the casing), the decision to replace it is up to your discretion. You might choose to live with it, especially if you plan to sell the vehicle soon and prefer to fix it then.
How to Install a Side Mirror at Home (DIY Guide)
If you've decided to take the DIY route, here’s a general guide to replacing your car’s side mirror. Remember that specific steps may vary significantly depending on your car's make and model, so always consult your vehicle's service manual or a reputable online resource for precise instructions.
1. Gather Your Supplies and Prepare
Before you begin, ensure you have everything you need. This typically includes:
- The new replacement side mirror unit.
- A set of screwdrivers (Phillips and flathead).
- A socket set or spanners.
- Plastic trim removal tools (highly recommended to avoid damaging interior panels).
- Work gloves for protection.
- A torch or headlamp for better visibility.
- A service manual or online tutorial specific to your car model.
Park your car on a level surface and engage the handbrake. It's also a good idea to disconnect the car's battery as a safety precaution, especially if dealing with electric mirrors, to prevent accidental short circuits.
2. Remove the Old Side Mirror
The process of removing the old mirror usually involves these steps:
Access the Mounting Bolts/Nuts: Most side mirrors are mounted from the inside of the door. You'll likely need to remove an interior trim panel near the mirror base. Roll down the window first to provide better access. Carefully pry off the trim panel using your plastic trim removal tools to avoid scratching or breaking clips.

On average, you should expect to pay at least $350 for a non-powered mirror and at least $600 for a powered mirror. However, exact pricing varies based on whether you choose OEM or not as well. In addition, driver side mirrors are almost always more expensive than passenger side mirrors. Disconnect Electrical Wiring: If your mirror is electric, heated, or has other features, there will be a wiring harness connected to it. Carefully disconnect this harness. Some may have clips or locking tabs that need to be pressed or slid.
Unscrew the Mirror: Once the trim is off and wiring disconnected, you'll see the bolts or nuts that secure the mirror assembly to the door frame. Use your socket wrench or screwdriver to carefully remove these fasteners. Support the mirror as you remove the last fastener to prevent it from falling and causing further damage.
Remove the Old Mirror: Gently pull the old mirror assembly away from the door.
3. Install the New Mirror
Installing the new mirror is essentially the reverse of the removal process:
Position the New Mirror: Carefully align the new mirror assembly with the mounting holes on the door frame.
Secure the Mirror: Insert and tighten the mounting bolts or nuts. Don't overtighten, as this can crack the new mirror housing or damage the door frame.
Reconnect Electrical Wiring: Reconnect the electrical harness to the new mirror. Ensure the connection is secure and clicks into place if applicable.
Test Functionality (Before Reassembly): Before putting the interior trim back, reconnect your car battery (if disconnected) and test all the mirror’s functions: adjustment, heating, turn signals, power-folding, etc. This ensures everything is working correctly before you complete the reassembly.
Reinstall Trim Panel: Once you've confirmed the mirror is fully functional, carefully clip or screw the interior trim panel back into place.
Congratulations, you've successfully replaced your side mirror!
Protecting Your Car's Side Mirror
After investing time and money into replacing your side mirror, it's natural to want to protect it from future damage. While some incidents are unavoidable, many common causes of mirror damage can be mitigated with a little care and awareness.
Here are some simple yet effective steps to protect your newly installed side mirror:
Park with Care: When parking in a car park, always leave ample space between your vehicle and adjacent cars or structures. Mirrors are frequently damaged by people walking past, opening car doors carelessly, or simply misjudging distances. Aim for wider spaces or park further away from the main flow of traffic.
Avoid Street Parking When Possible: Parking on busy streets increases the risk of your mirrors being clipped by passing vehicles, cyclists, or even pedestrians. If street parking is unavoidable, try to position your car as close to the kerb as legally and safely possible.
Fold Mirrors In: If your car has power-folding mirrors, make it a habit to fold them in when parked in tight spaces, car parks, or on narrow streets. This significantly reduces their vulnerability. Remember to do this when going through automated car washes as well, as the brushes can easily damage extended mirrors.
Exercise Caution When Manoeuvring: Whether you're pulling out of a parking spot, navigating a tight driveway, or reversing, take your time and be fully attentive to your surroundings. Distractions can lead to costly bumps and scrapes. Use your mirrors and look over your shoulder.
Educate Passengers: If you have young children or frequent passengers, gently remind them not to play with the mirror controls or manually push the mirrors, especially if they are electric. This can stress the internal mechanisms and lead to premature failure.
Regular Cleaning: Keep your mirrors clean. While this won't prevent physical damage, clear mirrors improve visibility, reducing the chance of accidents caused by obscured views. Use appropriate glass cleaner and a soft cloth.
A little prevention goes a long way in ensuring your side mirror remains intact and functional, helping you avoid another costly replacement in the near future.
Frequently Asked Questions (FAQs)
How do I get a side mirror repaired professionally?
The quickest way to get a professional repair is to contact your local independent garage or authorised dealership. It's often a good idea to call ahead and inquire about parts availability, as specific side mirrors, especially those with advanced features, may not be kept in stock. Many people prefer to visit the garage or dealership in person first so their parts advisor can assess the damage, order the correct replacement part, and then schedule a service appointment for the installation.
Is it illegal to drive without a side mirror in the UK?
Yes, it is generally illegal and unsafe to drive a car in the UK without a functional and correctly adjusted driver's side mirror. While there's no specific law stating you must have a passenger side mirror, having one is highly recommended for safety. The law requires vehicles to have mirrors that provide an adequate view of the road behind and to the sides. If your driver's side mirror is missing or severely damaged, your vehicle could be deemed unroadworthy, leading to a fine, points on your licence, or even a vehicle seizure in serious cases. Always ensure you have a clear view to the rear and sides.
Can I just replace the mirror glass or do I need a whole new unit?
In many cases, if only the mirror glass itself is cracked or broken, you can often purchase and replace just the glass element. This is a much cheaper and simpler repair than replacing the entire mirror assembly. However, if the housing is damaged, the internal mechanisms (for electric adjustment, heating, etc.) are faulty, or if your mirror has integrated electronics like blind-spot sensors or cameras, you will almost certainly need to replace the entire unit. Always inspect the damage thoroughly to determine if a glass-only replacement is feasible for your specific mirror type.
How long does a side mirror replacement take?
For a professional mechanic, replacing a standard electric side mirror typically takes between 30 minutes to 1.5 hours, depending on the vehicle's make and model and the complexity of the wiring. Mirrors with more advanced features (like cameras or blind-spot monitoring) might take slightly longer due to calibration requirements. If you're doing it yourself, allocate at least 1-3 hours, especially if it's your first time, to allow for researching steps, gathering tools, and carefully performing the installation.
Replacing a car's side mirror might seem like a minor repair, but its importance for your driving safety cannot be overstated. By understanding the factors influencing the cost and considering your options, you can ensure your vehicle remains safe and compliant on the road without breaking the bank.
If you want to read more articles similar to Car Side Mirror Replacement Costs in the UK, you can visit the Maintenance category.
