Perhaps this statement should have the word worse substituted for better.
The DA-42 is the recent example of far poorer than predicted performance that sticks in everybody's mind. 200+ kts predicted and in reality only 155 kts or so. That is not just a few knots, it is an outrageous 25%!!!
Ok..Ok..Ok...my mistake, what I (probably) meant to say was that the performance is better then POH/AFM figures.
In old brochures (2000-2001) they do anticipate 200+ KTAS for the DA-42.
Still 16 NM/gallon is not that bad...
They are working on different engines, this could be one of them;
in cooperation with Austro Engine GmbH and the German Mercedes Benz Technology (MB-Tech). The new diesel has a power output of 170 hp 570 Nm.
But lets wait and see what the numbers will turn out to be for the D-Jet.