Skip the auto shop - Our mechanics make house calls

Q: Is My Car’s Cracked Windshield Safe?

asked by on

Is my car’s cracked windshield safe?

A: Your car’s windshield is a part of the stru...

Your car’s windshield is a part of the structural support system for the roof of your car. The windshield also provides additional strength to the safety cell that is the passenger compartment. Windshields that are intact provide more rollover protection than windshields that are cracked.

Once a windshield becomes cracked, it’s only a matter of time before the crack grows and weakens the windshield further. Constant temperature changes (cold to hot to cold) is responsible for the continued growth of cracks in windshields. Chips in windshields can be addressed, but cracked windshields will have to be replaced at some point in the near future.

The laws of many states make allowances for cracks in windshields, as long as the crack touches only one edge of the glass. If you have a windshield where the crack touches two separate edges of the glass, it must be replaced. This is a major safety issue. Windshields that are cracked in this manner provide no structural rigidity at all to the roof. The entire safety cell of your vehicle has been compromised to an unsafe degree.

To have your windshield replaced, you should contact an automotive glass repair shop that is trained to do the job safely and correctly, that have the proper tools and the correct glass for your vehicle. However, if you want a proper second opinion for any window concerns, have a certified mechanic inspect them for you.

Was this answer helpful?
Recommended services
Get a Quote

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Window making grinding sound. Window could be off track.

Having a window that is stuck down can be a major inconvenience. The only way to know exactly what is wrong with your window is to remove the door panel for inspection. The problem could be with the motor, the...

Q: Deafening sound from something blowing out through sunroof

Hi there, and thank you for asking about the event that happened with your 2013 Lexus RX450h. Although certainly frightening, this is likely a truly rare event. Most automotive glass has multiple layers of glass, joined by a plastic layer...

Q: What safety items should be checked before driving?

While it might seem like all you need to do before driving your car is to crank the engine and put it in gear, there are actually several things that should be done every single time before you hit the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.