My experience bears this out some. When I'm really, really careful with the throttle, I can maybe eke out another MPG or so in some situations, but generally the car seems to like running a little faster and deep on the throttle when accelerating.Don't do this. (drive like an old man)
These small turbo-charged diesel engines like a bit of stick, so once the temperature needle has started to move give it some wellie!
You don't have to plant your foot, but give it a chance to spool up and clear its tubes.
Then switch on the cruise control and let it take care of things.
My last tank was a little lower. I've been running the A/C and not trying much to be efficient. But... "lower" for me is 54 MPG.