Mines an 03 plate St and i am getting 316 miles on a full tank, which reading bthe comments below is quite good. However mine seems to have a problem, if you are in 5th or 6th and are cruising say 60mph, it starts to serge in a cycle motion as if its holding back. Took it back to ford and was told everything is ok, they then finished by telling me to plant it everywhere i go as this engine was designed to be reved "HARD".
Thanks Ford - Useless

My question is has anyone else had this problem and does the bluefin sort it, or any other advice would be welcomed