A mirror check takes only a few seconds, but it can shape every lane change, turn, merge, and parking maneuver that follows. Learning how to adjust driving mirrors correctly gives you a wider view of traffic, reduces unnecessary blind spots, and helps you make decisions with less stress behind the wheel.
For new drivers, mirrors are not just equipment to set once and forget. They are part of your driving routine. Before moving the vehicle, take the time to position your seat, adjust every mirror, fasten your seat belt, and make sure your view is clear. This calm, consistent start is especially helpful when preparing for a road test or building confidence in Montreal traffic.
Adjust Your Seat Before Your Mirrors
Set your driving position first. If you move the seat after adjusting the mirrors, the view will change and you may need to start again.
Sit upright with your back supported by the seat. Your feet should comfortably reach the pedals, and your arms should have a slight bend when holding the steering wheel. Adjust the head restraint so the center is approximately level with the back of your head. Once you are settled, avoid leaning forward or sideways while setting the mirrors. They should work for your normal driving position, not for a position you will not maintain on the road.
This order matters during driving lessons and road tests. A properly adjusted mirror cannot compensate for a seat that is too far back, too low, or reclined too far.
How to Adjust Driving Mirrors Step by Step
Most passenger vehicles have three mirrors: the inside rearview mirror and two outside mirrors. Each one has a different job, and they should overlap enough to provide a continuous view around the vehicle.
Set the inside rearview mirror
Use the inside rearview mirror to see directly behind your vehicle through the rear window. Adjust it so the entire rear window is visible in the mirror, with the horizon roughly centered. You should not need to shift in your seat to see behind you.
Do not angle the rearview mirror toward passengers or toward the back seat. Its purpose is to help you monitor vehicles, cyclists, and hazards behind your car. At night, if headlights from a vehicle behind you create glare, use the mirror’s night setting if your vehicle has one. Many newer cars adjust glare automatically.
Set the driver’s side mirror
Lean your head slightly toward the driver’s side window, then adjust the left mirror outward until you can barely see the side of your vehicle along the inside edge of the mirror. When you return to your normal seating position, only a small portion of the car should be visible.
This wider setting helps show the lane beside you rather than filling the mirror with the side of your own vehicle. You want to see approaching traffic early, especially before changing lanes or merging onto a busy roadway.
Set the passenger-side mirror
Lean slightly toward the center of the vehicle and adjust the right mirror outward until only a small edge of the vehicle is visible. Again, when seated normally, the mirror should show more of the adjacent lane and less of your car.
The passenger-side mirror is particularly useful for right turns, lane changes, parking near a curb, and watching for cyclists. Keep in mind that objects in this mirror may appear farther away than they really are. Check carefully and allow extra space before moving.
Aim for Overlap, Not Duplicate Views
A common mistake is angling both outside mirrors so far inward that the driver sees a large section of the car’s rear doors or body panels. This feels familiar, but it repeats information already available in the inside rearview mirror. It also leaves a larger blind spot beside the vehicle.
A better setup creates an overlapping field of view. A vehicle passing you should first appear in the inside mirror, then move into an outside mirror, and finally become visible through the side window. There should be no long period where the vehicle disappears from view.
Mirror position will vary slightly by vehicle size, seat height, and driver preference. The goal is not to copy one exact angle. The goal is to see as much useful traffic information as possible while keeping your own vehicle visible only at the edge of the outside mirrors.
Mirrors Reduce Blind Spots, but They Do Not Remove Them
Even perfectly adjusted mirrors cannot show every area around your vehicle. Blind spots still exist, particularly near the rear corners and alongside larger vehicles. That is why safe driving requires a shoulder check before changing lanes, pulling away from the curb, merging, or opening a door into traffic.
Use a simple routine: check the inside mirror, check the appropriate outside mirror, signal, and then make a quick shoulder check in the direction you intend to move. Keep the shoulder check brief. Looking away from the road for too long can create a new risk ahead of you.
This habit is closely watched during a Class 5 road test. Examiners want to see that you use mirrors actively, but they also want to see that you verify your blind spot before lateral movement. Mirrors provide information. A shoulder check confirms that the space is safe.
When to Check Your Mirrors While Driving
Mirror use should be frequent without becoming distracting. As a general habit, glance at the inside rearview mirror every few seconds when driving straight, then use the outside mirrors when preparing for a maneuver or responding to traffic around you.
You should check your mirrors before braking firmly, turning, changing lanes, merging, pulling into or out of a parking space, and approaching a stopped vehicle. This gives you a picture of what is happening behind and beside your car before you act.
A glance is enough. Do not stare into a mirror. Your primary attention belongs on the road ahead, where conditions can change quickly. With practice, checking mirrors becomes a natural rhythm rather than a task you have to consciously remember.
Adjustments for Night, Rain, and Winter Driving
Road conditions can change what you see in your mirrors. Rain, snow, dirt, and road salt can quickly cover the mirror surface, especially during a Quebec winter. Before leaving, clear all mirrors completely. Do not drive with snow or frost left on any mirror, even if you believe you can manage without it.
At night, use the rearview mirror’s dimming feature when needed, but do not rely on it to solve every glare problem. Slow down if visibility is reduced, increase following distance, and keep your windshield and mirrors clean. Outside mirrors may have heating elements in some vehicles, but they still need to be checked before you begin driving.
If you are driving an unfamiliar rental or exam vehicle, take a moment to locate the mirror controls before pulling away. Make adjustments while parked, never while moving through traffic.
Parking Mirrors and Backup Cameras
Backup cameras and parking sensors are useful tools, but they do not replace mirror checks and direct observation. Cameras can have blind areas, poor visibility in bad weather, or a distorted sense of distance. Before reversing, look around the vehicle when possible, check both side mirrors, and turn your head to look in the direction of travel.
For parallel parking, the passenger-side mirror can help you judge your distance from the curb. Some drivers tilt it slightly downward for the maneuver. If you do, return it to its normal position before rejoining traffic. Driving with a mirror pointed at the pavement limits your ability to see vehicles and cyclists beside you.
Common Mirror Mistakes to Avoid
New drivers often adjust mirrors while the vehicle is already moving, which divides attention at the wrong time. Others rely only on the inside mirror, forget shoulder checks, or leave outside mirrors angled inward because they want to see the sides of the car. These habits can make lane changes less safe and can cost valuable points on a road test.
Another mistake is treating mirror checks as a performance for the examiner rather than a genuine safety habit. Make your checks purposeful. Scan before the maneuver, understand what you see, and act only when the space is clear.
If mirror use still feels overwhelming, practice in a quiet area with a qualified instructor. At Montreal City Motor League, structured in-car lessons can help learners build the observation routine needed for urban traffic, highway merges, parking, and SAAQ road test preparation.
Before every drive, give yourself those few extra seconds to set your seat and mirrors properly. A clear view around your vehicle will not make every decision for you, but it gives you the information to make safer, more confident ones.