What year is my number plate?

The current system, since September 2001

A current UK registration is two letters, two digits and three letters, in that order. The two digits in the middle are the only part that says anything about age, and they change twice a year rather than once.

From 1 March to 31 August the identifier is simply the year. A car registered in May 2024 wears a 24. From 1 September to the end of the following February the identifier is the year plus fifty, so a car registered in October 2024 wears a 74 and so does one registered in January 2025.

That is why the scheme runs out of numbers slowly rather than quickly. The spring series began at 02 in March 2002, because 00 and 01 were never issued, and it will run to 50 in 2050. The autumn series began at 51 in September 2001 and will run to 99.

The letters either side carry no age at all. The first two are the memory tag, which records the region and the local office that issued the mark, and the last three are a random sequence to make the mark unique.

• 02 to 50: March to August of that year. 24 is March to August 2024.
• 51 to 99: September of the year fifty lower, through to the following February. 74 is September 2024 to February 2025.
• 00 and 01 were never issued in the spring series.
• The first two letters are the region, the last three are random.

Prefix plates, August 1983 to August 2001

Before the current scheme the age letter came first: a single letter, then up to three digits, then three letters. An R reg is August 1997 to July 1998, and a T reg is March to August 1999.

The changeover date was 1 August for most of the scheme's life. It moved when the twice yearly pattern was introduced in 1999, which is why S, T, V, W, X and Y cover half years rather than full ones and why so many people misremember them.

The letters I, O, U and Z were never used as prefix identifiers, because they are too easily confused with figures or with each other on a plate read at speed.

• A to R: annual, changing on 1 August, from 1983 to 1997.
• S: August 1998 to February 1999, the first half year.
• T, V, W, X, Y: half years, running to August 2001.
• I, O, U and Z were never issued as prefix letters.

Suffix plates, February 1963 to July 1983

Older still, the age letter came last: three letters, up to three digits, then the age letter. An A suffix is 1963 and a Y suffix is August 1982 to July 1983, which is where the scheme ran out and switched to the prefix format.

The changeover date moved during 1967. Until then the letter changed on 1 January, which produced an enormous spike of registrations every New Year. From August 1967 it moved to 1 August, and the E suffix is the short seven month period that bridges the two.

A car wearing a suffix plate today is at least forty three years old, so in most cases it is also old enough for the historic vehicle tax class, which is a nil rate claimed annually rather than granted automatically.

Marks that carry no age

Three kinds of plate tell you nothing about when the car was registered, and it is worth recognising all of them before you draw a conclusion from a mark.

Dateless marks are the oldest format, letters and numbers with no age element at all. They can be transferred onto a vehicle of any age, which is why they command the highest prices in the private plate market.

Northern Ireland marks are three letters and up to four digits, where the letter triple contains an I or a Z. They have never encoded an age, and a car wearing one can be any age at all.

A Q mark identifies a vehicle whose age or identity could not be established, typically a rebuild or an import with incomplete paperwork. It is not a private plate and it cannot be transferred away.

• Dateless: letters and numbers, no age element, transferable to any vehicle.
• Northern Ireland: three letters containing an I or a Z, then digits.
• Q mark: age never established, and it stays with the vehicle.

Reading a plate at the kerb

Start with the shape, because it tells you which scheme you are in before you read a single character. Two letters, two digits, three letters is the current scheme. A single letter at the front is a prefix plate and a single letter at the end is a suffix plate. Anything else carries no age.

Then read the middle two digits and decide which half of the year they mean. Under fifty is spring, so it runs March to August of that year. Over fifty is autumn, so subtract fifty and the period runs from September of that year into the following February. That is the whole trick, and it works on every current plate on the road.

Finally, check the plate against the car rather than the other way round. A mark that looks older than the vehicle is a transfer and tells you nothing. A mark that looks newer than the vehicle is not possible, so if you think you are seeing one, you have misread the identifier or the plate is not legal.

• Two letters, two digits, three letters: current scheme, and the digits are the age.
• Letter first: prefix, 1983 to 2001. Letter last: suffix, 1963 to 1983.
• Under fifty is March to August. Over fifty is September to February, minus fifty.

Why a plate is not proof of age

The rule DVLA applies to every transfer is that a registration may never make a vehicle appear newer than it is. It may freely make one appear older, or hide the age entirely.

That means a plate is a floor rather than a fact. A car wearing a 15 plate was registered no earlier than March 2015, and a car wearing a dateless mark could be from any year at all.

The date that settles it is on the V5C, in the field for date of first registration, and it is also on the free DVLA vehicle enquiry service, which needs only the registration number. If the two disagree with what the advert says, the advert is the thing to question.