Join Date: May 2019
In the UK these things are, as far as I’m aware, done using the manufacturer’s declared ‘official’ figures. So for road tax purposes, for example, the banding is determined by the official CO2 figures. The alternative is to put each individual car on a rolling road.
Is there nothing in state law/regulations that says where the power-to-weight figure has to come from?
I have no idea. I am thinking of telling the authorities that my other car is a 4C (which it is) so which of the two would they prefer my son to drive?
The Giulietta isn’t much over the threshold anyway, so maybe trying to convince them that real-world engine performance in hot and humid Sydney has it less than 130kW/tonne, in reality.
Last edited by 147Alfaguy; 20-05-19 at 09:47.