You must exchange your UK driving licence for a local EU licence to drive legally in the country you live in. You must do this before the UK leaves the EU.
Link for driving licence exchange: https://europa.eu/youreurope/citizens/vehicles/driving-licence/driving-licence-renewal-exchange/index_en.htm#shortcut-0-exchanging-your-licence
Exchange your licence as early as you can because your application may take longer than usual to process.
You will still be able to drive on your EU licence when visiting the UK.
Vehicle safety and roadworthiness MOT
Your UK MOT test certificate will not be recognised in the EU after Brexit.
You must have your vehicle retested in the EU country you live in.