Originally Posted By Felix42
The tax on my 2005 Roadster is £290.

That sounds quite good John.
The tax on my 2001 1800 4/4 is £265, 196g/km.
It must be a really stinky engine for the time, despite the engine management - maybe that's the problem?
I am intending to have the ECU modified at sometime, but I am not sure what effect that will have on actual g/km.