Diesel consumption at Euroline

Hello guys, I’ve had a brand new Euroliner with 92 kw for 2 months and so far I’ve driven almost 2000 km. The diesel consumption so far was about 10,3l/100 km. It’s at least miles away from the declared value of just under 8 litres. The workshop informed me that the engine was not really free until about 5000 km. I would like to call my driving method an average. It can’t be that the consumption is a good 2.5 liters above the specified value. What are your experiences? Before I had a Euroline Bj. 99 and this one needed less. Greetings aljulu