170 tdi s tronic mpg / millage question

[dannyboygti]

hi guys I'm looking at replacing my

8p2 sb tdi 140 manual

for a

8p3 sb s tronic 170 tdi

and was wondering what kinds on mpg / miles to a tank people get with the 170 s tronic box i shall mostly be doing motorway millage and don't drive like a idiot either normally 75mph tops with cruise on

thanks in advance

 

[LEE69]

motorway trip mates 140 does 64 mpg my 170 does 56 mpg