Looks to me like you got that stuff from parkers website.
Im not sure buying a diesel is the answer given that diesel will always be more than petrol now and the saving difference may get less and less. Whats annoying is there is enough petrol really, especially in aberdeen where deep mining can get new finds which last 15 years. But its in the media now and it will keep going up.
Anyway its not £400 for every gti since it doesnt work out like that
Ones registered in 2000-02 are only £200 for 12 months in 2010.
http://www.parkers.co.uk/cars/road-tax/?deriv=18438
Date of Registration 6 Months 12 Months Band CO2 (g/km)
5 Feb 2000 – 1 Mar 2001 £101.75 £185.00 -
1 Mar 2001 – 1 Feb 2002 £93.50 £170.00 E 173
Rates effective from April 2009
Date of Registration 6 Months 12 Months Band CO2 (g/km)
5 Feb 2000 – 1 Mar 2001 £101.75 £185.00 -
1 Mar 2001 – 1 Feb 2002 £112.75 £205.00 I 173
Rates effective from April 2010
Date of Registration 6 Months 12 Months Band CO2 (g/km)
5 Feb 2000 – 1 Mar 2001 £110.00 £200.00 -
1 Mar 2001 – 1 Feb 2002 £115.50 £210.00 I 173
The only polos that cost £425 are the 06 onwards polo gti ones and if you can afford £15k or whatever they cost Im sure you can afford £425 for a years tax. Its probably down to the huge emissions at 190, when non gti cars with same engine such as an 06 corsa 1.7 sxi are only 130 emission rating.
http://www.parkers.co.uk/cars/road-tax/?deriv=33631