What's the V3 document reference number on a UK logbook?

A Republic of Ireland buyer wants to buy my car located in the north of Ireland. They are asking for a V3 number on a log book. What is this? And is this necessary for the sale for them to bring the car over?

Jess

Jul 2025 Filed under: importing

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Expert answer

Hi Jess,

It's just the document reference number on your logbook (or V5C), found on the top-right corner of the front page, an 11-digit number.

There is nothing unsafe about providing this number to the seller. They may be able to use it to calculate taxes etc. on importing the car. 

Shane O' Donoghue - Complete Car Advisor