In England when you buy a new vehicle the DVLA (licensing authority) assigns a number plate, currently this consists of 2 letters, the region in the country where the car is registered, 2 numbers, currently 72 representing the second half of 2022, and 3 randomly generated letters, ie XX72XXX for a vehicle registered on 1st sept 2022 but before March 2023. In March 23 the numbers change to 23
Sometimes, depending on the numbers and letters with a stretch of the imagination, a name or car and model can be spelt out and the DVLA will auction these off to make some money
If the combination of letters and numbers may spell out a rude or swear word, then these are not assigned
In the 60's and 70's the plate consisted of 3 letters and 3 numbers, followed by a final letter, which represented the year of registration, ie A 1963, B, 64, C, 65 etc etc
There are strict rules regarding the size, font and colour, and the vehicle could be stopped if these are not adhered to, apart from Historic vehicles which are allowed a different set of criteria
If an owner wants a cherished plate, then there are various dealers or auctions, and the price will depend on whether the plate spells out a name, or again, a car make and model. Generally the fewer the characters the dearer the plate, hence RR and F1 were probably the most valuable plates ever sold. Not sure why S3 ARC demands such a price, few people are called ARC, and the overall plate doesn't seem to spell out a particular word, sometimes numbers can be interpreted as letters, ie 3 could represent E, but then SEARC still makes no sense. Might be valuable to a company called ARC, or perhaps Noah would be interested for his boat
I can imagine plates 230SL, 250SL or 280SL would command a higher price than the actual car, if they ever came on the market
If an owner wants to fit a cherished or personalised plate, they have to register that plate to that vehicle, so that the vehicle and registered owner can be identified in the case of a motoring or criminal offence. Plates need to be fitted front and rear for the same reason, so the vehicle can be identified if caught on a speed camera, by traffic police, by a dash cam, or anyone who wants to report the vehicle for an offence
On some occasions the numbers of letters can be "modified" by adding an additional fixing screw in a certain position, such as these on Ebay at the moment for an Audi S3, nothing to do with me i might add:
Audi S3 Number Plate - S3 0UAT - Private Plate - S3 QUAT.
Hello for sale I have number plate S3 0UAT
The sale is for the documentation and ownership of S30UAT
I have used these plates spaced out and a added black dot with zero issues for years
Adding a dot or screw to make the "0" look like a "Q" is illegal and the Police would pull the driver up for this
Personally, personalised or cherished plates have never interested me, but there's clearly a market for them