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Getting the right vehicle identification number for your vehicle

It is a legal requirement for all vehicles used on public roads to have a vehicle identification number (VIN). Usually the VIN is stamped into the chassis of the vehicle. It may be lost when a vehicle is substantially rebuilt or modified, especially where the chassis, monocoque bodyshell or frame has been replaced with a new or used one.

When the Driver and Vehicle Licensing Agency (DVLA) assesses your completed rebuilt, radically altered or kit built vehicle, it is important that it is able to establish the original VIN . Without evidence of this, the vehicle may not be able to keep the original registration number.

If there is not enough evidence of the original VIN your DVLA local office will give you a replacement identity number. DVLA will then give you an authorisation letter to get the vehicle stamped with the new VIN. You will not be able to register the vehicle until DVLA receives confirmation that the vehicle has been stamped with the correct VIN.

• Find your nearest DVLA local office

Allocating your own vehicle identification number

Individuals with kit-built or kit-converted cars may prefer to allocate their own unique 17 digit VIN number. Your nearest DVLA local office can tell you how you can do this. This does not apply if a ‘Q’ registration number is allocated.

'Q' registration numbers - why some vehicles have them

‘Q’ registration numbers have proved to be useful for consumer protection. The display of a ‘Q’ prefix number plate is a visible sign to a prospective buyer of the vehicle’s uncertain origin. ‘Q’ registration numbers are issued by the DVLA to vehicles where the age or identity of the vehicle is in doubt.

Where a ‘Q’ mark is allocated, any original vehicle registration number will be voided and the number must not be displayed again.

Your vehicle will need to pass one of the following before a 'Q' registration number can be issued:

• Individual Vehicle Approval (IVA)
• Single Vehicle Approval (SVA)
• Motorcycle Single Vehicle Approval (MSVA)

During this test, the Vehicle and Operator Services Agency will check to make sure the vehicle is constructed to British or European safety standards.

If your vehicle cannot pass IVA, SVA or MSVA it cannot be registered.

• What is the Single Vehicle Approval scheme?

• The Individual Vehicle Approval scheme

• The Motorcycle Single Vehicle Approval (MSVA) scheme