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Law & MOT20 Sep 20262 min read

Can you drive with a cracked windscreen in the UK?

The MOT rules on chips and cracks, what counts as obstructing your view, and when a small chip becomes a fail.

Article
Published
20 September 2026
Reading time
2 min read
Topic
Law & MOT

A chip is easy to ignore until it spreads. Here is what the rules say about driving with a damaged windscreen in the UK, and when a small chip becomes a problem.

What the law says

Your windscreen must be kept in a condition that does not obstruct your view of the road. If damage does get in the way, you can be stopped and penalised, even if the car has a valid MOT.

What the MOT checks

  • Directly in front of the driver: in the area swept by the wipers, damage larger than 10mm is a fail.
  • Everywhere else in the wiper area: damage larger than 40mm is a fail.
  • Anything that obstructs the view: a crack or a sticker in the wrong place can fail, whatever its size.

Why small damage does not stay small

A windscreen flexes with every bump, and temperature swings make the glass expand and contract. A chip that is harmless today can grow into a crack across the screen within days.

If you can see it from the driver's seat, it is worth a phone call.

What to do next

  1. Take a photo of the damage and your registration plate.
  2. Call or WhatsApp us. We are open 24 hours.
  3. We tell you honestly what the glass needs, confirm the price and a time, and come to you.

Cracked right now? Skip the reading.

Open 24 hours. We come to you, anywhere in London.