Two-thirds of Welsh drivers are unaware of the new car tax laws coming into force from 1 April.
The research by Confused.com also revealed only one in 10 UK drivers understand the new car tax laws and two out of five UK drivers say the new charges would discourage them from buying a 2017 plate.
Amanda Stretton, Confused.com’s motoring editor, said, “The new car tax laws are very complex, so it’s no wonder that only one in 10 drivers understand them.
“The revised emission brackets and standardised rates will mean that many car buyers will feel the pinch, and with just 24 days to go it’s vital that motorists get to grips with the changes.”