I have the certificate of conformity from Volkswagen. The year of manufacture of the car was 1999 and the year of registration in the UK was 2012. However DVLA claim that the year of manufacture determines that the tax is based on an engine size, and not emissions as its post 2001. I'm getting nowhere with this! They have told me I can send of the conformity and log book, and they will "look" at it.