Espace Fuel Consumption

Hi

I've recently bought a 53 Plate Espace 1.9Dci Authentique. I went out on my first motorway run of about 60 miles or so, I kept at a steady 65 - 70 mph. When I got back I checked the trip computer, it reported an average of 38.7 MPG. Does this sound about right as I was expecting more from it.

I was hoping someone with the same car could let me know what they get on a good run.

Thanks