Most cars call it the rearview mirror: the center mirror that shows the road behind through the rear window.
The interior mirror has one job: give you a clear straight-back view without turning around. In everyday talk, it’s the rearview mirror. In manuals and parts catalogs, you’ll often see “inside rearview mirror,” which simply separates it from the outside mirrors on the doors.
Below, you’ll get the naming straight, learn the terms that show up on invoices, and pick up a setup routine that makes your mirrors feel calmer on real roads.
What Makes The Interior Mirror Different From Other Mirrors
The interior mirror sits near the top center of the windshield and aims through the rear glass. Side mirrors angle outward to cover lanes beside you. The center mirror aims down the car’s midline, which is why it’s the quickest way to check who’s directly behind.
Names You’ll See In The Wild
- Rearview mirror: The common name for the interior mirror.
- Inside rearview mirror: The parts-counter name for the same piece.
- Interior rearview mirror: Same meaning, different word order.
- Day/night mirror: Refers to the flip tab that reduces glare on older designs.
What Is The Interior Mirror Of A Car Called? The Correct Name And Where It Sits
If you’re speaking plainly, call it the rearview mirror. If you’re ordering a replacement, ask for an inside rearview mirror. Either way, you mean the mirror mounted high on the windshield, set to show the view through the back window.
Most versions attach to a small metal “button” bonded to the windshield. Some mount to an overhead console or a camera housing. The mounting style matters when you replace it, since the wrong mount can make a new mirror sit crooked or not fit at all.
Where Rules And Manuals Use Precise Terms
Safety rules don’t rely on slang. They spell out “rear visibility” and define requirements that can involve mirrors, rearview images, or both. The text of 49 CFR 571.111 (Standard No. 111; Rear visibility) is the clearest public reference in the U.S. for how rear visibility is treated in regulation language.
NHTSA interpretation letters use “inside rearview mirror” when answering manufacturer questions, like this NHTSA interpretation on Standard No. 111 rearview mirrors. That phrasing is why parts listings and compliance documents tend to mirror the same wording.
Interior Rearview Mirror Types And What They’re For
The core name stays the same, yet the mirror can carry different features. Knowing the common types helps you avoid buying the right-looking part with the wrong wiring or options.
Day/Night Flip Mirrors
These have a small tab. In “night” mode, the reflective surface shifts so you see a dimmer reflection, which cuts glare from headlights behind you.
Auto-Dimming Mirrors
Auto-dimming mirrors use light sensors and a darkening layer to tame glare without the flip tab. Many add a compass, temperature display, or microphone since power and wiring are already present.
Camera-Based Rearview Mirrors
Some vehicles show a live rear camera feed in the mirror housing. Drivers often like these when cargo or tall headrests block the rear window view. A screen view can feel different at first, so brightness settings and a clean camera lens make a big difference.
Quick Terms That Show Up In Parts Listings
- Windshield mount button: The metal pad glued to the windshield.
- Wedge mount: A common slide-on mount style.
- Wire harness: The plug and wiring that powers dimming or displays.
- Mirror shroud: Trim that hides wiring at the headliner.
Mirror Types And Tradeoffs At A Glance
This table groups common interior mirror styles by function so you can match what you have with what you’re shopping for.
| Mirror Type | What It Does | Common Notes |
|---|---|---|
| Basic rearview mirror | Reflective view through rear window | Least wiring, easy swap |
| Day/night flip mirror | Reduces glare by changing reflection angle | Flip tab under mirror, no power |
| Auto-dimming inside mirror | Darkens when bright lights hit sensors | Needs power, may add compass |
| Mirror with HomeLink | Built-in garage or gate buttons | Pairing steps vary by opener |
| Mirror with backup display | Shows camera feed only in reverse | Often tied to factory screen system |
| Full-time camera mirror | Shows live rear camera view while driving | Helpful with tall cargo |
| Mirror with driver-assist cameras nearby | Shares space with safety sensors | Careful after windshield work |
| Mirror with built-in dashcam | Records forward road view from mirror area | Storage and app features vary |
How To Set The Interior Rearview Mirror So It Works Better
A mirror can be the right part and still feel wrong if it’s aimed poorly. Set your seat first, then set mirrors in a consistent order.
Step 1 Set Your Seat First
Sit with your back against the seat and shoulders relaxed. You should reach the wheel without stretching. If you change seat height or distance later, redo mirror angles.
Step 2 Aim The Center Mirror For Straight-Back View
Adjust the rearview mirror so the rear window fills the frame. Keep the view centered, with the horizon near the middle. If you see lots of your rear seat, the mirror is aimed too low.
Step 3 Set Side Mirrors To Work With The Center Mirror
With the center mirror showing what’s directly behind, set each side mirror so only a thin slice of your own car is visible at the inner edge. This pushes the view outward so cars appear sooner in adjacent lanes.
If you share a car with family, mark a “home” seat position with a tiny strip of tape on the seat rail or a note in your phone. It sounds simple, yet it stops the slow drift where mirrors get worse each week because the seat keeps moving a notch at a time.
Use A Quick Head-Tilt Check
After setting the side mirrors, do a fast check. Lean your head toward the driver window until it’s close to the glass, then adjust the driver-side mirror so you can just see the side of your car. Sit back upright. In the normal position, the mirror now shows more of the next lane, which reduces the gap between what the center mirror shows and what the driver-side mirror shows.
Repeat on the passenger side by leaning toward the center of the car, then adjusting the passenger mirror so you can just see the side of your car. Sit back. The passenger mirror should now feel “wider,” which is handy on multi-lane roads.
What To Do When The Rear Window Is Partly Blocked
Headrests, tall passengers, and cargo can block the center mirror view. If the mirror shows a narrow slice of the rear window, lower headrests that aren’t in use, and keep bulky items below the window line. If you drive a vehicle that stays loaded, a camera-based mirror can be a relief because it sees past the cabin.
Glare Control Beyond The Mirror
If glare still annoys you, clean the inside of the windshield and rear glass. A thin film on glass can turn headlights into a smear. Keep the mirror surface clean too. Use a soft microfiber cloth and a gentle cleaner that won’t leave haze.
Mirror Adjustment Checklist You Can Run In Two Minutes
Run this once, then spot-check it any time another driver moves the seat.
| Step | What To Do | What You Should See |
|---|---|---|
| 1 | Lock in seat height and distance | Clear view over hood, easy wheel reach |
| 2 | Aim the rearview mirror at the center of the rear window | Rear glass fills most of the mirror |
| 3 | Level the mirror left/right | Horizon looks flat, not tilted |
| 4 | Set the driver-side mirror outward | Only a thin slice of your car at inner edge |
| 5 | Set the passenger-side mirror outward | Adjacent lane shows sooner as cars approach |
| 6 | Night check: flip tab or confirm dimming works | Headlights behind feel less harsh |
| 7 | Quick scan before driving off | Center and side views overlap smoothly |
Care And Small Habits That Keep The View Clear
Interior mirrors pick up fingerprints, interior haze, and vibration. A quick cleaning routine keeps the view crisp, which helps you judge distance better.
- Clean lightly, not aggressively: Spray cleaner on the cloth, not on the mirror, so liquid doesn’t seep into the housing.
- Check the mount twice a year: A tiny wobble grows into a shaky view over potholes.
- Keep hanging items away: Lanyards and air fresheners can block sensors on auto-dimming mirrors.
If you recently had a windshield replaced, take a second look at the mirror area. Many vehicles have a cluster of parts near the mirror: rain sensors, cameras, light sensors, and trim covers. If anything is loose or rattling, fix it early so wires don’t chafe.
Common Problems And Plain Fixes
Mirror Shakes Or Sags
A small set screw at the mount can loosen over time. If tightening doesn’t help, the pivot joint inside the mirror may be worn. If the windshield mount button is loose, the button needs to be rebonded with the right adhesive.
Night Glare Still Bothers You
On a flip mirror, make sure the tab is in night mode. On auto-dimming mirrors, keep the sensor windows clean and free of dangling items that block light.
Replacement Shopping Tips
Match mount style, connector shape, and feature set. A mirror that looks right in a photo can fail because the plug pins are different or the mount angle is off.
Quick Naming Recap Without Extra Fuss
For normal conversation, the interior mirror is the rearview mirror. For parts and paperwork, “inside rearview mirror” is the sharper label that gets you to the correct part faster.
References & Sources
- eCFR.“49 CFR 571.111 (Standard No. 111; Rear visibility).”Regulatory text that sets rear visibility requirements tied to mirrors and rearview images.
- National Highway Traffic Safety Administration (NHTSA).“Interpretation on Standard No. 111 rearview mirrors.”Official interpretation language that uses “inside rearview mirror” terminology in context.