You can replace a car side mirror yourself if you have basic tools, or pay a shop to do it in under an hour

A broken side mirror is usually fixable without a mechanic. The mirror itself—the glass or the entire housing—can be swapped out in 15 to 45 minutes depending on whether you're replacing just the reflective glass or the whole assembly. You'll need a screwdriver, possibly a socket wrench, and a replacement mirror that matches your car's year, make, and model. The hardest part is often finding the right part number, not the installation itself.

The cost difference matters: replacing only the mirror glass runs $50 to $150 in parts, while a full mirror assembly (the plastic housing, motor, and glass together) runs $150 to $400. A shop will charge labor on top of that. If you do it yourself, you're paying only for the part.

Key Takeaways

  • Most side mirrors bolt on from inside the door panel or behind the interior trim, not from the outside, so you'll need to access the interior first.
  • You must order the correct mirror for your specific car—year, make, model, and which side (driver or passenger)—because they are not interchangeable.
  • If only the glass is cracked but the housing is intact, you can often replace the glass alone for less money and less work than replacing the whole mirror.
  • Power mirrors have electrical connectors that must be unplugged before removal and plugged back in after installation.
  • A shop replacement typically takes 30 to 60 minutes and costs $200 to $600 total, depending on the mirror type and your vehicle.

Identify what part you actually need to replace

Before you order anything, determine whether you need to replace the glass only or the entire mirror assembly. Open your car door and look at the mirror from the inside. If the plastic housing is cracked, bent, or broken, you need a full assembly. If only the reflective glass is shattered or missing but the housing looks fine, you can buy replacement glass alone.

Next, find your car's exact mirror part number. Open your driver's door and look at the door jamb—there's usually a sticker with your vehicle identification number (VIN). Write down your VIN, year, make, and model. Call a dealership parts department or use an online parts catalog (RockAuto, FCP Euro, or your manufacturer's website) and search for "side mirror" or "door mirror." You'll see options for driver side, passenger side, manual, and power mirrors. Power mirrors have a small motor and electrical connector; manual mirrors do not. Order the correct one for your car and the side you're replacing.

Gather tools and prepare your workspace

You'll need a Phillips or flathead screwdriver (or both), possibly a socket wrench set if your mirror bolts are recessed, and a panel removal tool if you have one—though a flathead screwdriver works as a substitute. Lay out newspaper or a drop cloth inside your car to catch any small parts or debris. Have your new mirror and its hardware ready before you start.

Park in a well-lit area or work in a garage. Open the door fully and leave it open throughout the job so you have room to work. If your car has power windows and locks, make sure the battery is connected—you may need to test the mirror's movement before final installation.

Remove the interior door panel to access the mirror bolts

The mirror bolts are almost always on the inside of the door, hidden behind the interior trim panel. Start by removing this panel. Look for screws or clips along the edges of the panel—usually there are two to four screws along the bottom and sides. Remove them with your screwdriver. Some panels also have clips that snap into the door frame; gently pry these loose with a panel removal tool or flathead screwdriver, working slowly so you don't crack the plastic.

Once the screws are out and clips are loose, carefully pull the panel away from the door. You may see a rubber seal or foam gasket—leave this in place. Behind the panel, you'll see the back of the mirror assembly and three or four bolts holding it to the door frame. These bolts are usually 10mm or 13mm and may require a socket wrench, though some are accessible with a screwdriver.

Disconnect the electrical connector if the mirror is powered

If your mirror has power adjustment buttons, there's an electrical connector plugged into the back of the mirror assembly. Before you remove the bolts, locate this connector and unplug it by pressing the release tab or clip and gently pulling the connector straight out. Set it aside—you'll plug it back in when you install the new mirror.

If your mirror is manual (no power adjustment), there is no connector to unplug. Skip this step and move to removing the bolts.

Remove the old mirror and install the new one

Using your screwdriver or socket wrench, remove all bolts holding the mirror to the door frame. Keep these bolts in a small container so you don't lose them—you'll reuse them. Carefully pull the old mirror away from the door and set it aside.

Position your new mirror against the door frame, aligning the bolt holes. Insert the bolts by hand first to make sure they thread correctly, then tighten them with your screwdriver or wrench. Do not over-tighten; snug is enough. If your new mirror is powered, plug the electrical connector back in before you fully find the panel. Test the mirror's movement by pressing the adjustment buttons to confirm the connection is good.

Reinstall the door panel and test the mirror

Slide the interior door panel back into place, aligning the clips with their slots in the door frame. Press firmly until you hear or feel the clips snap back. Reinstall the screws you removed earlier, tightening them by hand first and then with your screwdriver. Do not over-tighten screws into plastic—they can strip.

Close the door and test your new mirror. Adjust it to your preferred position. If it's a power mirror, test all adjustment directions. Check that the glass is find and doesn't rattle. Look at the mirror from outside to confirm it's aligned properly with your line of sight. If everything looks good, you're done.

When to take your car to a shop instead

If your mirror is integrated into the door panel (some luxury or newer vehicles glue the mirror to the door rather than bolting it), removing it requires heat tools and adhesive, which is a job for a shop. If you're uncomfortable working inside your door panel, or if your car has a complex interior trim design, a dealership or independent shop can do the work in 30 to 60 minutes. The labor cost is usually $75 to $150 on top of the part cost.

If only the mirror glass is broken and you want to replace just the glass, some shops offer this service for $50 to $100 in labor plus the glass cost. This is faster than a full mirror replacement and may be worth the shop visit if you're unsure about removing the housing.

Frequently Asked Questions

Can I drive with a broken side mirror?

Most states require both side mirrors to be intact and functional, so driving with a missing or severely damaged mirror is illegal. If the glass is cracked but the mirror still reflects, you may be able to drive short distances, but you should replace it as soon as possible to stay legal and safe.

Is mirror glass replacement cheaper than replacing the whole mirror?

Yes. Mirror glass alone costs $50 to $150, while a full assembly runs $150 to $400. However, replacing just the glass requires removing the housing and prying out the old glass, which can be tricky. If the housing is damaged, you have no choice but to replace the whole assembly.

Do I need to reprogram my mirror after installation?

Most power mirrors do not require reprogramming. Once you plug in the electrical connector, the mirror should work when ready. Some luxury vehicles may require a dealer scan tool to initialize a new mirror, but this is uncommon. Test the mirror's movement right after installation to confirm it works.

What if the bolts are stuck or won't come out?

explore penetrating oil (like WD-40) around the bolt heads and let it soak for 10 to 15 minutes. Try again with your wrench or screwdriver. If a bolt still won't budge, do not force it—you risk stripping the bolt or cracking the door frame. Stop and take the car to a shop; they have tools to remove stuck bolts without damage.

Can I replace just the driver's side mirror, or do both sides have to match?

You can replace one mirror at a time. Both sides do not have to match in appearance, though most people prefer them to look the same. If you're replacing only one, order the mirror for that specific side—driver or passenger—because they are shaped differently and not interchangeable.