Can You Drive with a Broken or Cracked Number Plate in the UK?

A small crack in a number plate is not automatically illegal, but it can be, and it is easy to cross the line without noticing. The law does not ask whether your plate is perfect. It asks whether the plate is secure and the registration is easy to read. Here is what that means in practice, what you risk if you drive on a damaged plate, and what to do about it.

What the law says

Your number plates must be kept clean and easy to read. A plate that is damaged, hard to read, missing a character or not properly attached can be treated as not correctly displayed. If it is, you could be fined up to £1,000, and your vehicle can fail its MOT.

When a crack is probably fine, and when it is not

A hairline crack at the edge of the plate that does not touch any letter or number is unlikely to cause a problem, though it will probably get worse. A crack that runs through the characters, a plate that is split in two, or a piece that has broken off is a different story. If someone cannot read the registration at a normal distance, the plate is not legal.

Other damage that counts

• Peeling or flaking characters.
• Faded or yellowing plates where the black text has lost contrast.
• A bent plate that makes the registration hard to read.
• A plate that is held on by one screw or hanging loose.
• Dirt, mud or snow covering the registration.

Can the police stop you?

Yes. A police officer can stop a vehicle with a plate they cannot read. Cameras that read plates automatically can also fail to recognise a damaged plate, which may cause problems with parking, toll and congestion charges even when you have done nothing else wrong.

What to do if your plate is cracked

1. Decide honestly whether the registration is still clear. If in doubt, replace it.
2. Do not use tape, glue or paint to hide the damage. That can make things worse.
3. Order a new plate from a DVLA registered supplier. You will need photo ID and proof like your V5C.
4. Fit the new plate straight away. Our fitting guide walks you through it.

What if your plate cracks while you are driving?

If a plate breaks and you cannot read it, sort it out as soon as you can. If you have to drive to get a replacement, take the shortest sensible route and do not keep using the car as normal. A replacement is cheap. Standard plates start from £6.99.

How cameras and the police see a damaged plate

Automatic number plate recognition cameras are everywhere: car parks, motorway gantries, toll points and police vehicles. They work by reading the characters, and a crack, a bend or a patch of peeling black print can make a character look like a different one. A misread plate can mean a penalty notice sent to the wrong vehicle, or no match at all, and a stop by the police. Driving on a clean, undamaged plate avoids all of that.

Temporary measures that are not a good idea

• Taping the plate together. Tape can hide part of a character and peel at speed.
• Writing over fading characters with a marker pen. This changes the plate, and it will fail an inspection.
• Using a stick on letter to replace a missing one. The plate must be made by a registered supplier.

What if the plate was damaged in an accident?

If the damage came from a collision or a theft, keep any police reference number and photos. You may need them for an insurance claim, and a supplier will still need your usual documents. Do not delay getting a new plate. The sooner you replace it, the sooner you are back to driving legally.

Does a plate holder or frame help?

A well fitted plate surround can help hold a slightly flexible plate in place, but it must not cover any of the characters or the supplier markings. If a frame is hiding the edges of the plate, take it off.

How to stay ahead of damage

Most plates do not fail overnight. They fade, they stain, and they weaken at the edges. Get into the habit of looking at your plates when you wash the car. Run a thumb along the edges and check the fixings. Look at the characters in direct sunlight, because fading shows up best in strong light. If anything looks tired, do not wait for the MOT, because a cheap replacement now is easier than a rushed one later.

What about a plate that is only slightly cracked?

If the crack is small and away from the characters, you may get away with it for a while, but cracks spread. Vibration, cold weather and car washes all make them worse. A plate that looks fine in spring can split completely by winter. Treat a small crack as a reminder to order a new plate, not as a problem that has gone away.

When you are ready, the number plate builder lets you choose your replacement and see the price straight away.

Frequently asked questions

Will a cracked plate fail an MOT?

It can, if the crack makes the registration hard to read or the plate is insecure. We cover the test side in our guide to cracked number plates and the MOT. Testers look at more than cracks, as explained in our guide to number plates and the MOT.

Can I repair a cracked plate?

Repairs rarely last and may hide the registration. Replacing it is the safe option.

How quickly can I get a new one?

Use the number plate builder to order. Our guide to replacing a lost or damaged plate explains the whole process.