I haven't flown ATR for quite some years now and I cannot remember the exact cruise fuel burn anymore. I think it was around 500 kg for AT43 and 600/650 for AT45 and 700 for AT75. Strangely enough I still do remember holding fuel burn for them: Atr 42-300= 420 kg/hr, ATR45= 540 kg/hr, AT72/5= 600 kg/hr.