Manufacturer-documented fuel consumption for 13 400–405 kW Diesel generator sets — median 24.49 gal/h at full load, 13.74 gal/h at half load.
Compare 400–405 kW Diesel generator specs side-by-side →
| Model | kW | gal/h @ 50% | gal/h @ 100% | Tank (L) | Runtime @ 50% (h) |
|---|---|---|---|---|---|
| AKSA APD-ULV400 | 400 | 3.88 | 7.08 | — | — |
| Caterpillar D400 GC | 400 | 24.22 | 42.56 | 2820 | 30.8 |
| Cummins/Onan DFCE | 400 | 15.85 | 15.59 | — | — |
| Emsa E BD XX 0500 | 400 | 13.74 | 27.71 | 1145 | 22.0 |
| Generac MD400 | 400 | 4.41 | 7.34 | — | — |
| Kohler 400REOZJ | 400 | 13.76 | 26.76 | — | — |
| Kohler 400REOZJD | 400 | — | 30.88 | — | — |
| MTU 6R0225 DS400 | 400 | 1.37 | 2.62 | — | — |
| MTU 8V1600 DS400 | 400 | 11.89 | 21.40 | — | — |
| Perkins 2506A-E15TAG1 | 400 | 13.21 | 19.02 | — | — |
| SDMO GS400UC | 400 | — | 24.49 | — | — |
| Simson-Maxwell SVW350 T6-T3 | 403 | 14.61 | 25.62 | — | — |
| Simson-Maxwell SVW400 T6-T3 | 404 | 14.61 | 25.62 | 2536 | 45.9 |
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.
Across 13 models with manufacturer data, full-load consumption runs 2.62–42.56 gal/h (median 24.49); at 50% load the median is 13.74 gal/h.
At 50% load, documented tank sizes give 22.0–45.9 hours (median 30.8 h) across 3 models.