MOT Windscreen Rules and Regulations for Cars

Windscreen rules and regulations are important for keeping you and your passengers safe while on the road. Here are the key points to remember:

– Windscreens must be free of any damage that obstructs the driver’s view.

– Chips no larger than 10mm in diameter are allowed, as long as they’re not in the driver’s direct line of sight.

– Cracks are only allowed if they’re less than 500mm long, and again, not in the driver’s direct line of sight.

– Windscreens must be clean and free of any obstructions (e.g. stickers) that could impede the driver’s view.

If you’re unsure about the condition of your windscreen, it’s always best to get it checked by a professional. Repairs can usually be carried out quickly and easily, so there’s no need to take any risks on the road.


MOT Rules – Windscreen

Windscreens on vehicles must:

Be free of cracks and other defects which might obscure the driver’s view of the road ahead. A 20mm diameter circle is drawn centred on any point in the crack. If the circle so encloses any part of a letter ‘E’ as specified in UN ECE Regulation 43, then the crack is deemed to obscure the driver’s view.

Be free of chips which, in aggregate, exceed a total area of 400mm2 and are located:

– In the swept area of the windscreen in front of the driver. The swept area is defined as an imaginary rectangle having a vertical height equal to that of the fixed portion of the windscreen, and a horizontal width corresponding to the maximum width of the screen.

– In the driver’s field of view when looking forwards through the screen.

Have no other damage which would obscure the driver’s view of the road ahead.

Be free from any ornament or other item which might be detached from the windscreen and cause injury to occupants in the event of an accident.

Be clean and unobstructed so as to give the driver a clear view of the road ahead. Windscreen wipers must operate satisfactorily and wash the windscreen effectively.

If you have a chip or crack in your windscreen, it’s important to get it repaired as soon as possible. Not only is it unsafe to drive with a damaged windscreen, but you could also fail your MOT if the damage is in the driver’s line of sight.

There are a few different options for repairing a damaged windscreen:

– Windscreen repair kits are available from most auto parts stores. These usually contain a resin that can be used to fill in the chip or crack.

– You can also take your car to a professional windscreen repair company. They will usually be able to carry out the repair quickly and easily, and the cost is often similar to that of a repair kit.

– In some cases, it may be necessary to replace the entire windscreen. This is usually only required if the damage is severe, or if it’s in a difficult-to-reach area.

If you’re not sure how to repair your windscreen, it’s always best to seek professional help. Windscreen repairs are usually quick and easy, so there’s no need to take any risks

Windscreen Replacement, Chip Repair and Window Tinting Specialists


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