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80–85 kW Diesel Generator Fuel Consumption

Manufacturer-documented fuel consumption for 27 80–85 kW Diesel generator sets — median 5.18 gal/h at full load, 2.91 gal/h at half load.

Compare 80–85 kW Diesel generator specs side-by-side →

Consumption by model

Model	kW	gal/h @ 50%	gal/h @ 100%	Tank (L)	Runtime @ 50% (h)
Caterpillar D80	80	3.57	6.00	—	—
Caterpillar DE110E2	80	3.33	6.31	250	19.8
Cummins/Onan C80 D6C	80	0.97	1.81	984	267.4
Cummins/Onan DGCG	80	0.74	1.48	24	8.6
Cummins/Onan DGDA	80	—	2.91	125	—
Cummins/Onan DSFAE	80	3.43	6.89	530	40.8
FG Wilson P100E	80	—	5.47	227	—
FG Wilson P80	80	2.91	5.55	250	22.7
Generac SD080	80	3.70	4.41	510	36.4
Kohler 80EFOZ	80	3.12	5.92	—	—
Kohler 80EOZ	80	2.72	5.18	—	—
Kohler 80ROZJ	80	2.51	4.99	—	—
MTU 4R0113 DS80	80	1.37	2.62	—	—
MTU 4R0120 DS80	80	1.37	2.62	—	—
MTU MTU 4R0113 DS80	80	1.37	2.62	145	27.9
MTU MTU 4R0120 DS80	80	1.37	2.62	—	—
Northern Lights M80A13	80	—	6.08	—	—
Olympian GEP110	80	3.09	6.79	250	21.4
SDMO J80U	80	3.04	5.55	—	—
Terex T70C	80	0.90	1.59	606	178.2
Terex T90	80	0.90	1.59	—	—
FG Wilson P88-3	81	2.51	0.77	76	8.0
Hipower HJW 85 M6	81	3.65	6.05	—	—
Caterpillar C4.4	82	—	1.20	—	—
Perkins 1006TG1A	82	3.01	5.76	—	—
Kohler 80REOZJ	83	3.80	6.29	215	14.9
Perkins 1104C-44TAG1	83	10.30	12.42	—	—

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 80–85 kW Diesel generator use?

Across 27 models with manufacturer data, full-load consumption runs 0.77–12.42 gal/h (median 5.18); at 50% load the median is 2.91 gal/h.

How long will a 80–85 kW Diesel generator run on a full tank?

At 50% load, documented tank sizes give 8.0–267.4 hours (median 22.7 h) across 11 models.