Company Car Tax Calculator Software - Deloitte?

[audi321]

I'm due to get a new Co Car soon, and I want to know how much per year each car will cost me as a 40% taxpayer.

Does anyone know of a site which will allow me to filter each car by this amount? www.comcar.co.uk does this to an extent, but I cannot filter by manufacturer (I can only choose from a few).

The perfect software solution seems to be from deloitte (www.cartax.co.uk) but it won't let me download the software (which I think is free to try) without a login name and password.

Anyone know of another option?