Like it sod the extra fuel. Whether it uses more fuel or not will depend on the type of driver you are without it. If you are a fugal driver then CC will use a tad more fuel but if you are a boy racer then cc will save you money.When and if I do use it, it as you have descibed above but it doesn't form part of my natural driving routine, so maybe I'll give it a go this weekend on all roads - when I remember, and see if it makes driving a "better" experience. Then I maybe a CC convert and s0d the extra fuel if it does make a diference.