TDi - secshun?
Edit: to add some value to this post, it will be interesting to see just what happens to the cost of tax, seeing as emissions legislation is getting tighter and tighter for diesel vehicles (I.E. Euro 6 emissions will be CO2 - 0.50, NOX - 0.08, PM - 0.005 all in g/km).
Question is, will this be reflected in even cheaper tax for our cars come 2014 or will they just reband them again to keep making a revenue.....