Post-Brexit the rules are more complicated, so if you buy a used vehicle in the UK on French, Spanish or other EU plates you will have to pay an import tariff of 10%. However, if you purchase the vehicle in an EU or EEA member state then this import fee is not applicable.

Once in Bulgaria you can use the vehicle for six months as long as you have third-party liability insurance as a minimum, but you will need to register the vehicle with the Bulgarian authorities. If the vehicle is registered in the UK you will need to notify the DVLA that you are permanently exporting it by completing the relevant section of the V5C. You will also need to make sure you have adequate insurance for the journey.