0. Identification of the vehicle

Registration plate (number plate) and vehicle identification number rules and inspection for motorcycle MOT tests.

0.1. Registration plates

You must inspect the rear registration plate on all motorcycles except for:

  • unregistered motorcycles
  • foreign registered motorcycles
  • diplomatic motorcycles
  • military motorcycles

You do not need to inspect front number plates.

You do not need to check:

  • the supplier’s name
  • postcode
  • BS number
  • logos or emblems if they are outside the minimum margin around the registration number

Registration plates must not:

  • be obscured, excessively damaged, deteriorated or delaminated
  • have background overprinting
  • have any feature or fixing that changes the appearance or legibility of any of the characters including the use of tints or films
  • have a honeycomb or similar effect background on motorcycles first registered on or after 1 September 2001 - back-lit registration plates may have a honeycomb type construction which is not to be confused with a honeycomb effect background

Particular attention should be given to the position of any fixing screws or bolts as well as any delamination of the number plate as this can prevent identification of the motorcycle by automatic number plate recognition (ANPR) cameras which ‘see’ any non-reflective material as being black.

Registration plates may:

  • have an optional non-reflective border displayed within the margin which must be:
    • no wider than 6mm and not within 5mm of the characters on motorcycles first used before 1 September 2021
    • no wider than 5mm and not within 10mm of the characters on motorcycles first used on or after 1 September 2021
  • display white, grey or silver characters on a black background - only on motorcycles manufactured before 1 January 1980
  • use characters containing grey, possibly to achieve a 3D effect

Registration plate characters:

  • may contain grey, possibly to achieve a 3D or highlighting effect (only on motorcycles first used before 1 September 2021)
  • may be raised or 3D
  • must be the correct size, stroke width and spacing
  • must not be italic, sloping or formed using broken or multiple strokes
  • must be laid out in the correct format for the age of motorcycle
  • must be formed using the prescribed font or be substantially similar to the prescribed font - as shown below

You do not need to physically measure the characters or their spacing. They should only be rejected if they are obviously incorrect.

Registration plate characters

Rear registration plates fitted to motorcycles manufactured on or after 1 January 1980 must:

  • have black characters on a yellow background
  • be fitted vertically, or as close to vertical as is reasonably practicable
  • be mounted towards the rear of the motorcycle

Rear registration plates fitted to motorcycles first registered on or after 1 September 2021:

  • must be a single shade of black
  • may be raised, but the entire surface of the characters, including the sides, must be a single shade of black
  • may have an integral raised or depressed border around the number plate periphery, not more than 5mm wide and 2mm high

Rear registration plates on motorcycles must be in a two line format. Motorcycles first used before 1 September 2001 can have a three line format.

Motorcycle registration plate formats

Registration plates must meet the dimensional requirements shown in the examples. However, the space between a ‘1’ or an ‘I’ and another character is permitted to be proportionately greater.

Motorcycles with non-date related plates, such as those issued before 1963 and Northern Ireland plates must still meet the separation requirement between groups of characters where relevant.

Motorcycle registration plate character spacing

Motorcycles registered before 1 September 2001 can have larger plates fitted with characters 89mm high and other relevant dimensions that are subsequently larger.

Imported motorcycles that do not have the space for a standard sized registration plate can have a smaller registration plate.

Defect Category
(a) Number plate missing or so insecure that it is likely to fall off Major
(b) Number plate inscription missing or illegible Major
(c) Number plate showing an incorrect registration Major
(d) Number plate does not conform to the specified requirements Major

0.2. Vehicle identification number (VIN)

Check the motorcycle is displaying a legible vehicle identification number (VIN).

Motorcycles may have the VIN displayed in more than one location, but only one VIN must be complete and legible. All motorcycles first used on or after 1 August 1999 must have a VIN or frame number.

Check that there is not more than one VIN displayed, other than for multi-stage build motorcycles. Multi-stage build motorcycles can have 2 VINs, both of which may have the same last 8 digits.

When registering a multi-stage build motorcycle for test, enter the last 6 digits of either VIN, along with the registration number. If the MOT testing service finds a match against either full VIN this should be accepted.

If no match is found, create a new record using the converter’s VIN.

A converter’s serial number is not a VIN.

Defect Category
(a) VIN missing or cannot be found Major
(b) VIN incomplete, illegible or obviously falsified Major
(c) More than one different VIN displayed Major