Does My Windscreen Need Replacing Before My MOT?

Your vehicle's MOT test checks that your car is safe and roadworthy – and that includes your windscreen. Many drivers overlook windscreen damage, assuming a small chip won’t matter. However, in some cases, chipped windscreen repairs or even full windscreen replacements may be essential before passing your MOT.

This blog explains when windscreen damage can affect your MOT result, how to determine if a repair is enough, and when a full windscreen fitting is necessary – especially for those using mobile windscreen fitting or driving commercial vehicles that require van windscreen repairs.

Why Windscreen Condition Matters for MOT

The MOT test is a legal requirement in the UK for most vehicles over three years old. It checks everything from tyres and brakes to seatbelts and exhaust emissions. Your windscreen plays a crucial role in visibility and vehicle safety.

If your windscreen has chips, cracks, or any form of damage that impairs your line of sight, it could lead to an MOT failure. That’s why addressing windscreen repairs or arranging windscreen replacements beforehand is a smart move.

What Types of Windscreen Damage Can Cause an MOT Failure?

The DVSA sets clear rules about windscreen damage:

• Any chip or crack larger than 10mm within the driver’s line of vision (a 290mm-wide area directly in front of the driver) is a fail.

• Any damage larger than 40mm anywhere else on the windscreen can also result in failure.

This means even what seems like a minor stone chip can cost you your MOT. In many cases, chipped windscreen repairs can solve the issue quickly and affordably – but if the damage is too extensive, you may need a full windscreen replacement before test day.

How to Tell If You Need a Repair or a Replacement

Before booking your MOT, inspect your windscreen carefully or ask a technician to assess it. Here’s a quick guide:

• Small chips (less than 10mm in the driver’s view): These are usually suitable for chipped windscreen repairs.

• Cracks spreading across the glass: Likely to require full windscreen replacements.

• Multiple chips or previous repairs: Replacement may be the safest option, especially if the structural integrity is compromised.

If you’re unsure, many providers of mobile windscreen fitting services offer pre-MOT checks to help you decide.

MOT and Van Windscreen Repairs

Drivers of commercial vans must take extra care. Vans often experience more road stress, which increases the likelihood of windscreen damage. Plus, fleet MOT checks are stricter due to commercial use.

If you’re a van owner or fleet manager, arranging van windscreen repairs ahead of time is critical. Not only does it help you pass MOTs smoothly, but it also reduces downtime caused by unexpected fails or safety risks.

Why It’s Better to Act Early

Leaving windscreen damage until the last minute can lead to avoidable MOT failures, rushed appointments, or limited availability for windscreen repairs. Early action means:

• You’ll have time to choose between repair or full windscreen fitting

• More flexibility to use convenient mobile windscreen fitting services

• Peace of mind knowing your vehicle is fully compliant

Booking your windscreen inspection a week or two before your MOT allows time for the necessary repairs or replacements without the added stress.

Mobile Windscreen Fitting for Convenience

In today's busy world, getting to a garage isn’t always easy. Mobile windscreen fitting services bring the solution to your doorstep. Whether you’re at home, work, or managing a van fleet, mobile technicians can carry out windscreen repairs, assess damage, and even perform full windscreen replacements where needed.

This is particularly helpful during busy MOT seasons or in rural areas where travelling to a workshop isn’t practical.

Can I Pass My MOT With a Repaired Windscreen?

Yes – if the repair has been done professionally and does not obstruct your view. Chipped windscreen repairs carried out by certified technicians use high-quality resin that restores clarity and structural integrity.

Once the repair is complete, your windscreen is less likely to worsen, and your vehicle will likely pass the MOT with flying colours. Just make sure you don’t attempt DIY fixes, as poor-quality repairs can still lead to failure.

Final Thoughts: Don’t Let a Windscreen Cost You Your MOT

A chipped or cracked windscreen is more than a cosmetic issue – it can affect your MOT result, your safety, and your wallet. Acting quickly on chipped windscreen repairs gives you the best chance of passing the test without delays or surprises.

Whether it’s a private car, commercial van, or company vehicle, always inspect your windscreen before an MOT. Use trusted professionals for windscreen repairs, consider windscreen replacements where necessary, and take advantage of mobile windscreen fitting for convenience.

When it comes to your windscreen, small damage can lead to big consequences – but only if ignored.