In most places, you’re expected to have a clear, functioning side mirror; a cracked mirror that obstructs the view or makes the mirror unstable is typically illegal, and you should replace it promptly.
Understanding the question requires looking at how different jurisdictions handle vehicle equipment and safety standards. A cracked side mirror can raise legality and safety concerns, but the specifics vary by country and even by state or province. Below is a region-by-region look at common expectations, followed by practical steps if you’re dealing with a cracked mirror. For definitive guidance, consult your local DMV or equivalent authority.
What the law says in practice
The core requirement across many jurisdictions is safe and adequate rear visibility. A minor crack that does not affect the ability to use the mirror may not be explicitly illegal, but a damaged mirror that obstructs vision or is loose can lead to enforcement actions or a failed inspection.
United States
In the United States, vehicle rules are set at the state level. Most states require at least one functioning driver's-side rear-view mirror; many also require a second mirror on the passenger side for certain vehicle types or when the vehicle is above a certain size. A cracked, loose, or missing mirror can be cited under general unsafe-vehicle equipment or traffic-safety provisions. For exact requirements, check your state's Department of Motor Vehicles or transportation department.
Common triggers for enforcement include:
- Obstruction of the driver's view due to the crack.
- Damaged or loose mirror that cannot be properly adjusted or securely mounted.
- Missing mirror on a position required by law for a given vehicle.
- Issues identified during periodic safety inspections where applicable.
In practice, enforcement varies by state and context. The safest course is to replace a cracked mirror promptly to avoid tickets and to maintain full rear visibility.
United Kingdom
In the United Kingdom, drivers must keep their vehicles in a safe condition, which includes having a functioning rear-view mirror with adequate visibility. A broken or missing side mirror that reduces visibility can be illegal to drive and might lead to fines or an MOT failure if checked during inspection. For precise guidance, consult the DVSA or local police guidance.
Typical concerns include:
- Mirror crack that severely impairs rear visibility.
- Mirror that is loose, detaching, or cannot be adjusted properly.
- Mirror damaged to the extent that it would fail an MOT or be deemed unsafe during roadworthiness checks.
Taking safety and compliance seriously means replacing the mirror promptly; even if it isn’t immediately illegal, a damaged mirror increases risk and potential penalties.
Canada
Canada’s rules are provincially administered, but all provinces emphasize safe visibility. A cracked side mirror that obstructs the driver’s view or cannot be adjusted properly may be considered an unsafe vehicle condition and could lead to a ticket or a failed inspection. For specific rules, check your provincial Ministry of Transportation or equivalent authority.
Common considerations include:
- Requirement for adequate rear visibility from mirrors; cracks that obstruct the view may violate provincial standards.
- Damaged or loose mirrors that compromise safety can trigger enforcement during stops or inspections.
- Repair or replacement guidance may be issued by insurers or repair standards.
In practice, replacing cracked mirrors promptly helps ensure safety and compliance across provinces.
What to do if your side mirror is cracked
To stay safe and compliant, follow these recommended steps.
- Assess the damage: determine whether the crack obstructs the view or affects adjustability.
- Schedule a replacement: order the correct mirror for your vehicle and have it installed by a professional if possible.
- Limit driving if the mirror is severely damaged: use extra caution and rely on the other mirrors and rear window when safe.
- Consult your insurer or repair shop about coverage: some glass repairs may be covered under comprehensive plans or warranties.
- Test and recalibrate: after replacement, ensure the mirror is properly aligned and provides a full rear view before resuming normal driving.
Bottom line: replacing a cracked side mirror promptly improves safety and reduces the risk of penalties across jurisdictions.
Summary
Laws vary by country and by state or province, but the core principle is consistent: you should have a clear, functional side mirror for safe driving. A minor crack that does not affect visibility may not be explicitly illegal in every case, but it poses a safety risk and can lead to enforcement actions or inspection failures. Replacing cracked mirrors promptly protects you on the road and helps ensure compliance with local regulations.
Is it illegal to have a cracked side mirror?
But the driver's side mirror must be intact. If you are violating this rule, you will usually receive a correctable citation. If you want a clear explanation of how those work, read our blog about California Fix It Tickets.
Is it legal to drive with a damaged side mirror?
A: While not always strictly enforced, driving with a broken or missing side mirror can be unsafe and may result in a fine if stopped by authorities.
Can you legally drive without one side mirror?
Federal Motor Vehicle Safety Standard (FMVSS) requires that passenger cars have at least one exterior mirror on the driver's side if the interior mirror doesn't provide an adequate view to the rear. Therefore, if the center mirror is obstructed or non-functional, a driver's side mirror is required by federal law.
Can I drive with a cracked side mirror?
Drive. If your near side rear view mirror that is the one on the passenger. Side is damaged or broken. Off you can still legally drive your car provided the other two mirrors are intact.