made any changes to your vehicle that DVLA need
to be made aware of (this can impact emissions, MOT testing and road tax status
Changed your name or address or other personal
information
If you don’t tell DVLA about changes after a sale or
transfer of a car, you may miss out on road tax refunds.
When selling your car
You’ll need the V5C log book to help sell your car. It is
good to let the buyer have a look at it so they can ensure it is genuine and
matches your vehicle.
But, do not give them the logbook document reference number
or provide them with an image of your vehicle logbook. If a third party has
this much information they can easily defraud you and get a fake logbook. This
often contributes to cloned or stolen cars.