I think you have been OWNED!!
You should have stuck with the GOlf, however the newer car is more powerful so they must judge it on boy racer value.
Theres only really one thing you want to do with a 1.6 Ford Ka, as they are not commonly seeen, and thats be quicker than the rest, the government know this hence the hefty tax.
You could be worse, it could be a Land Rover and you'd be paying �400 lol.
my Megane is around the same and its the same size engine so who hard done by, when you whizz by me at the lights?