You notice a crack across your windscreen just before work.

The obvious question is: Can I still drive?

The answer depends on the location, size and severity of the damage, as well as whether it affects your ability to see the road safely.

A windscreen is not simply another piece of glass on your vehicle. It plays an important role in visibility and vehicle safety, so windscreen damage should never be ignored.

Is It Legal to Drive With a Cracked Windscreen in the UK?

There is no simple rule stating that every windscreen crack means you are immediately prohibited from driving.

However, UK roadworthiness requirements mean your windscreen must be maintained so that you have an adequate view of the road.

The Highway Code states that windscreens and windows should be kept clean and free from obstructions that could affect your vision.

The condition and position of any windscreen damage therefore matter.

Where Is the Windscreen Damage?

One of the most important factors is where the crack or chip is located.

DVSA MOT guidance divides the windscreen into different areas when assessing damage.

Zone A, the central area directly in front of the driver, is subject to stricter requirements. Current MOT guidance states that damage in this area over 10mm in diameter can result in an MOT defect where the relevant conditions apply. In the remainder of the swept area, the corresponding limit is 40mm.

These measurements should not be treated as permission to continue driving with damaged glass. Visibility and safety should always be the priority.

What If the Crack Is Outside Your Main Field of Vision?

A crack outside the driver’s immediate field of vision may be less likely to result in an MOT issue, depending on its size, location and effect on visibility.

However, this does not mean the damage should simply be ignored.

Windscreen cracks can spread, particularly when the glass is exposed to temperature changes, vibration or further impacts. A small crack that appears manageable today could become significantly larger later.

If you notice new damage, having it professionally assessed can help you determine whether a repair or replacement is required.

Can a Windscreen Crack Get Worse?

Yes, it can.

Changes in temperature, road vibration and further impacts can cause existing windscreen damage to spread.

A small chip that looks harmless today could develop into a long crack tomorrow.

This can become particularly inconvenient if it happens while travelling to work, preparing for a long journey or getting ready for an MOT.

Getting the damage assessed early may help prevent a minor issue from becoming a larger problem.

What Should You Do If Your Windscreen Cracks While Driving?

If you notice significant windscreen damage while driving, prioritise safety.

Avoid unnecessary journeys and consider whether you can safely reach a suitable location for the vehicle to be assessed.

If your visibility is significantly affected, do not continue driving simply because you have somewhere you need to be.

GOV.UK states that drivers are responsible for ensuring their vehicle is safe to drive. A vehicle can also be unsafe even if it currently has a valid MOT certificate.

Should You Repair or Replace a Cracked Windscreen?

The right solution depends on the type and extent of the damage.

A professional windscreen technician can assess factors including:

• Crack length
• Damage location
• Impact point
• Driver visibility
• Existing damage
• Overall glass condition
• Vehicle specification

Some types of windscreen damage may be suitable for repair, while other damage may require a complete windscreen replacement.

The important thing is not to assume that every crack requires the same solution. A professional assessment can help determine the most appropriate option for your vehicle.

What About an MOT?

Windscreen condition forms part of the MOT inspection.

The tester checks the driver’s field of vision and the condition of the windscreen. Damage that significantly affects the driver’s view can result in an MOT defect.

If you have an MOT coming up and your windscreen is damaged, arranging a professional assessment beforehand can help you identify any potential issues and avoid unnecessary disruption.

Mobile Windscreen Repair and Replacement

Windscreen 365 provides mobile windscreen repair and replacement services across London and Berkshire.

Instead of arranging for your vehicle to be taken to a glass centre, our technicians can attend a suitable location, such as your home or workplace, subject to appropriate access and working conditions.

We assess the damage, identify the appropriate solution and carry out the required work using suitable glass and professional installation materials.

Don’t Ignore Windscreen Damage

A cracked windscreen is one of those problems that can be easy to postpone.

You may think:

“It’s only a small crack.”

But windscreen damage can change over time.

If you are unsure whether your windscreen needs a repair or replacement, send Windscreen 365 your vehicle details and photographs of the damage.

We’ll help you understand what may be required and provide a clear quotation.

Windscreen 365 provides professional mobile windscreen repair and replacement across London and Berkshire.