Hi,
Had to covert your l/100kms to mpg but for that engine sounds about right.
See
https://www.honestjohn.co.uk/realmpg.../t4-powershift
Incidentally I have a V60 T3 manual and the trip computer mpg is pretty much spot on averaging 35mpg mixed (8l/100km)
The auto is more thirsty
If your annual miles are low console yourself that you won't have any hefty diesel engine related garage bills to fork out for.