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5–10 kW Gasoline Generator Fuel Consumption

Manufacturer-documented fuel consumption for 31 5–10 kW Gasoline generator sets — median 0.95 gal/h at full load, 0.61 gal/h at half load.

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Consumption by model

31
ModelkWgal/h @ 50%gal/h @ 100% Tank (L)Runtime @ 50% (h)
Kohler 5EKD50.760.93——
Cummins/Onan 5.5 HGJAA-830760.610.95——
Cummins/Onan 5.5 HGJAB-103860.610.95——
Cummins/Onan 5.5 HGJAB-675560.610.95——
Cummins/Onan 5.5 HGJAB-710360.610.95——
Cummins/Onan 5.5 HGJAB-90160.610.95——
Cummins/Onan 5.5 HGJAD-213860.610.95——
Cummins/Onan 5.5 HGJAD-214060.610.95——
Cummins/Onan 5.5 HGJAD-255860.610.95——
Cummins/Onan 5.5 HGJAD-675960.610.95——
Cummins/Onan 5.5 HGJAE-213160.610.95——
Cummins/Onan 5.5 HGJAE-213560.610.95——
Cummins/Onan 5.5 HGJAE-213660.610.95——
Cummins/Onan 5.5 HGJAE-255560.610.95——
Cummins/Onan 5.5 HGJAE-675760.610.95——
MQ Power GA-6H6—0.1319—
Kohler 6EF60.510.80——
Generac QUIETPACT 6560.730.97——
Cummins/Onan 7 HGJAB-103670.741.22——
Cummins/Onan 7 HGJAB-675670.741.22——
Cummins/Onan 7 HGJAB-90070.741.22——
Cummins/Onan 7 HGJAD-213970.741.22——
Cummins/Onan 7 HGJAD-214170.741.22——
Cummins/Onan 7 HGJAD-256070.741.22——
Cummins/Onan 7 HGJAE-191270.741.22——
Cummins/Onan 7 HGJAE-213270.741.22——
Cummins/Onan 7 HGJAE-213770.741.22——
Cummins/Onan 7 HGJAE-255670.741.22——
Cummins/Onan 7 HGJAE-675870.741.22——
Kohler 7ER70.510.80——
Kohler 8EFKD80.781.17——

Figures from each model’s own manufacturer documentation (spec sheets and manuals); runtime = documented tank capacity ÷ consumption at 50% load. Verify against the datasheet for your exact configuration.

Common questions

How much fuel does a 5–10 kW Gasoline generator use?

Across 31 models with manufacturer data, full-load consumption runs 0.13–1.22 gal/h (median 0.95); at 50% load the median is 0.61 gal/h.