Hello everyboby

First of all, sorry about language. I am able to study this interesting forum but writing in Your language is far from my abilities.
Anyway, I have been driving my TDdi for two years and about 100000 km here in Finland within local speed limits and smoothly in general. That is probably why the fuel consumption has been very satisfactory. It has been very much the same as a gentleman's I read about in this forum: about 5,5 l/100 km. I have noticed that you have reached quite high numbers, obviously because of higher average speed.
My next move might be TDCI with Durashift automatic transmission which according to Ford is very sophisticated. Driving as much as I do, the fuel consumption is an important factor. This is why I am asking you, experienced Durashift users, how much this new automatic transmission will increase fuel consumption bearing in mind my present "always below 6 l/100 km" with manual transmission.
Thanks in advance.