Will a chipped windscreen fail an MOT?

It can, if the damage is in the area the tester must check and it is large enough under the MOT manual. A chip outside that zone may still be worth repairing before it spreads. The MOT fee is not the glass bill.

Does insurance always replace the screen?

Only if your policy says so. Some policies repair chips and replace screens with an excess. Ask the insurer before you pay a mobile fitter.

Windscreen chip or replacement in Wales

Q: Is recalibration extra?

Often yes, on cars with a forward camera. Ask whether the quote includes it, and whether you must drive afterwards so the camera can learn the road.

A small chip and a crack across the driver’s view are different jobs. Wales does not set a windscreen tariff. Ask what the quote includes before a mobile van leaves.

Repair or replace

A resin repair can suit a small chip, away from the edge, if it has not started to run. A long crack, damage at the edge of the glass, or a chip in the area the driver looks through usually means a new screen.

An MOT can fail for windscreen damage that meets the defects in the inspection manual. A chip outside that zone may still be worth repairing before it spreads. The MOT fee cap is for the test, not for the glass. See how much an MOT costs in Wales.

Cameras behind the glass

Many cars have a forward camera in the windscreen. After a new screen, that camera often needs recalibration. Ask whether the quote includes it, and whether you must drive afterwards so the camera can learn the road. A cheap pane without calibration is not a finished job on those cars.

Insurance

Only your policy decides. Some policies repair chips and replace screens with a glass excess. Some send you to a network fitter. Ask the insurer before you pay a mobile firm, and ask the fitter whether they bill you or the insurer.

There is no official Welsh price for a chip or a screen. Size, the car, sensors, and whether they come to you all change the bill.

Before they start

Confirm it is your car, that the glass matches, and what happens if a crack runs while they try to repair it. Keep the invoice. If the screen is part of a larger body repair, that is a different chapter — still ask who calibrates.

Repair first, if it is still a chip

Ask the fitter to look before they book a full screen. A chip that has not run can often be filled. Once it runs into the driver’s view, or into the edge, the repair window has usually closed. Do not keep driving “to see” if the chip is already moving — that is how a fill becomes a pane.

Mobile vans are common. Ask whether they need the car under cover, how long the resin must set before you drive, and whether a camera car has to go to a workshop afterwards. If the insurer’s network is the only route that keeps the excess down, use that network and still ask the calibration question.

The car care pages are where to start looking. They are not a price for this glass. Ask for chip repair and replacement as two figures before the van leaves.