Our is a 1.7 but it has only limited VFR avionics and standard tanks, 789 kg BEM. I polished it when I got it, and we get:
50% 105 kts 3.8/3.9 usg ph
70% 120 kts 6 usg p h
100% 135 kts 8 usg
All with pilot & student. 3 people and MTOW seems to take 5 kts off even though the cofg is in a more efficient position. Looking at the fuel consumption figures I suspect our % load measurments are not the same - ie my 50% is your 60%.
I'm at Perth, Scotland. We have Thielert and Diamond factory certified engineers on site so come over if you want a trip or need some maintnenance done! pm me for details