If its before 06 and less bhp its £275
If its after 07 with the more powerful engine then its £475
its a considerable extra outlay every year which will never go away, im convinced I can get something that was built before 06 and satisfies my needs
to be honest I havent checked out the less powerful cheaper to tax version as my brother tells me the newer one is "the one to have"
Edit: but I will!
The first ones have 276bhp, the second one and the GT4 (gran turismo) have 300bhp, the final ones had 313bhp.
I think from 2007 the newer ones also got an updated/improved interior.