Nice info, but I think the OP was asking for fuel burn for axis types.
All I can offer is that "Junkers Aircraft & Engines" by Antony L Kay quotes for the Junkers Jumo 210 engine: 126.5 kg/hr at 690hp - that's 37.1 Imp. Gals/hr or 44.6 US Gals/hr.
The Jumo 210 powered early versions of the Ju87 Stuka, Messerschmitt Bf 109 and Bf 110 and a few lesser known types.