They say it is a tax to only affect the most polluting vehicles and favour the friendly ones... My 02 Laguna Diesel will do 50mpg and yet it is still going up by a tenner in tax...

Personally I think they have placed it just so the average family car will go up by a bit so they make a bit more money, the fast cars go up a lot as it is a nice easy cheap shot they can put under the green banner, and only a few small carswill go down in tax which willbe offset by most families having one big and one small car...