My next-door neighbour and I both own Vauxhall Zafiras of about the same age. Mine is 2004/04 registered and his is 2004/54. Both have 1.8 petrol engines. His is a manual whilst mine is an automatic. I understand that his annual Road Fund Tax for last year was some £55 cheaper than mine and I wonder just how that is justified. After all, an automatic is reputed to be heavier on petrol and thus pays more to the government at the pumps.