[vc_row][vc_column][vc_column_text]Read this blog if you want to find out how to ensure your 4D plates are road legal, and all the rules you need to be aware of ahead of time.
Over recent years, 4D number plates have risen in popularity, and there is no sign of the people’s love for them dwindling. However, there are often concerns about the legality of these plates, so we want to walk you through how to ensure your 4D plates are road legal, so you can rest easy with your stylish plates.
Since 4D plates can enhance your car’s overall look and are considered the best option for high-end vehicles, it comes as no surprise that there are questions. There are lots of reasons to upgrade to these modern plates, and we predict they will stay trending for some time yet, with nothing to suggest that they will become illegal again.
So, if you want 4D plates, and you want them to be road legal, keep reading to learn what you need to know.
What Are 4D Number Plates and Are They Legal?

Our well-loved 4D plates are usually laser cut with acrylic and three-dimensional (the name is misleading, we know). This means that the characters stand out from the background rather than being flat like printed plates, so they will cast a shadow if light is directed at them.
These plates are known for adding some extra class to a vehicle and can really pull a look together. At first glance, you may not notice a big difference between these plates and their 3D alternatives, but once you get an eye for it, this will be the first thing you notice.
As the best alternative to printed number plates, 4D plates are perfectly legal for road use, provided they follow the regulations. Any type of plate can be illegal if they have the wrong measurements, materials, or characters. If you know that they are legal and get fined for having 4D plates, we encourage you to dispute it and get the penalty withdrawn.
Will You Pass Your MOT With 4D Plates?
You should have no problem passing your MOT with 4D number plates, provided they are road legal and comply with all the rules set out by the government. With that being said, you do need to declare 4D number plates and other dimensional plates when doing your insurance, as these all qualify as modifications.
How to Ensure Your 4D Plates Are Road Legal

If you want to know how to ensure your 4D plates are road legal, it is a lot easier than you might think. All you need to do is get your plates from a trusted provider like us, and we will make sure that everything is DVLA-compliant and ready for the road.
But… What makes your number plate road legal? We will go through what you need to know and all the rules set out by the government in the section below, so you can have an idea of what to look out for.
Follow the Rules Set Out By the UK Government
The government website has detailed information on all the rules and regulations that need to be followed by number plate providers who want their plates to be legal for road use. These rules do not apply to number plates that are only used as decorations for any purpose off the road, such as in an office or bedroom.
These rules may not apply to carbon gel number plates as well, as these plates are illegal on the road since they do not meet the requirements. Again, these can be enjoyed as decorations, but not on the road.
Below are the number plate regulations that will determine if a number plate is road legal or not:
- Not have reflective characters (letters, numbers)
- Not have removable characters (letters, numbers)
- Be made with a background of reflective material
- Have a plain background, with no pattern or distracting characteristics
- Front plates must have black characters on a white background
- Back/rear plates must have black characters on a yellow background
- Show who supplied the number plate (mark of provider is required)
- Have a British Standard number for any plates fitted after the first of September 2021
- Must have characters written in the Charles Wright 2001 font
- Can have raised characters (3D & 4D)
- Can display certain identifiers such as flags or symbols
It is illegal to cut down plates or make any additional modifications to the plate. However, there are several legal 4D number plate options you can try out if you want something different while still complying with the law – such as 4D gel plates, or 4D hex plates.
No matter the type of number plate (printed, 3D, 4D, etc), the spacing needs to follow the rules and regulations set out by the government. Whether you have 4D gel plates or regular printed plates, ensure that you get them from DVLA-compliant shops (like us) so that the spacing is legal for road use.
Below are the rules for correctly spaces number and characters on a number plate:
- 50mm character width
- 79mm character height
- 14mm character thickness (stroke)
- 11mm space between characters
- 11mm side margins
- 11mm top and bottom margins
- 33mm between random numbers and age identifier
- 19mm of vertical space between random numbers and age identifier
Incorrectly spaced number plates can lead to the numbers and characters being misrepresented. If this happens, your plates will not easily be picked up by cameras, ANPR, or ULEZ, and they will be deemed illegal.
Get Them From a Trusted Number Plate Manufacturer
If you want to make sure that your 4D plates (or any other plates) are road legal, you need to make sure that you get them from a trusted, DVLA-compliant seller. These ships – like ours – must follow strict rules regarding materials, spacing, and appearance for all plates to make sure that they follow the laws.
If you opt to get your plates from a shop that is not compliant, you risk getting illegal plates. And, while these plates might be appealing, they will cost you a lot of time and money down the road, and are not worth it.
What Happens if Your Plates Are Not Road Legal?

If your plates are not road legal, you will get an immediate fine and three penalty points. If you do net get your plates changed, then there will be additional fines and penalties involved.
Remember to stay up-to-date with new private plate laws in 2024 to make sure that you follow all the new rules. If you want to save yourself the trouble of going to a garage for your plates, you should learn how to fit your own plates, too – it’s much easier than you think.
Order Your Next Plates from Number Plate Clinic

So, there are lots of rules and regulations you need to keep in mind when getting your new number plates. While there are plenty of number plate options to choose from, including traditional printed, 3D, and both 4d gel and regular, you need to make sure to get your plates from trusted, legal sellers if you want to stay out of trouble.
At Number Plate clinic, we consider ourselves to be the best alternative to Halfords for all your number plate needs. We can supply you with road legal plates that can be with you as early as the next day if you place your order before 1pm, but we also do so much more than that.
With our range of blogs, from carbon gel plates being replaced by 4D plates and why there is no Z in number plates, we aim to keep you informed about everything happening in the world of number plates. Now that you know how to ensure your 4D plates are road legal, we hope that you will consider upgrading to these modern and stylish plates.
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