28 45–50 kw diesel generator models side by side — power, phase, sound level, weight and fuel tank capacity, compiled from manufacturer specification sheets.
| Model | Standby | Phase | Sound | Weight | Fuel tank |
|---|---|---|---|---|---|
| Kohler 45EFOZDJ | 45.0 kW | 3 | — | 934.0 kg | — |
| Kohler 45EFOZCJ | 45.0 kW | 3 | — | 934.0 kg | — |
| MTU 4R0080 DS55 | 45.0 kW | three phase | 62.0 dBA | 868.0 kg | 145.0 L |
| Yanmar LPI-Y-40kW | 45.0 kW | 3 | — | 1600.0 kg | — |
| Laborde Products LPI-Y-45 | 45.0 kW | 3 Phase | — | 725.7 kg | — |
| Laborde Products 4TNV98T-ZGGM | 45.0 kW | 3 Phase | — | 725.7 kg | — |
| Cummins/Onan DYJ-9XR | 45.0 kW | 3 | — | — | — |
| Cummins/Onan DYJ-15R | 45.0 kW | 3 | — | — | — |
| Generac MMG45K | 45.0 kW | — | — | — | 416.0 L |
| Cummins/Onan DEF | 45.0 kW | 3 | — | 985.2 kg | — |
| Olympian XQ45P2 | 45.0 kW | — | — | — | — |
| MTU 20V 4000 | 45.0 kW | — | — | — | — |
| MTU 12V 4000 | 45.0 kW | — | — | — | — |
| MTU 16V4000 | 45.0 kW | — | — | — | — |
| Westquip WQ40-STAT | 45.0 kW | — | 78.0 dBA | 646.0 kg | 355.0 L |
| FG Wilson P50-3 | 45.0 kW | — | 67.5 dBA | 810.0 kg | 145.0 L |
| Atlas Copco PTS 1600 | 45.7 kW | 3 | 86.0 dBA | 8565.0 kg | 600.0 L |
| Simson-Maxwell SKW30 T6-T3 | 46.3 kW | 3 | — | 583.8 kg | 710.4 L |
| Caterpillar XQ60 Tier 4 Final | 47.5 kW | 3-phase,1-phase | 63.0 dBA | — | — |
| Kohler 48REOZK4 | 48.0 kW | — | 69.0 dBA | 1989.0 kg | 386.0 L |
| Generac RD048 | 48.0 kW | Single | 70.0 dBA | 886.0 kg | 257.4 L |
| Generac MMG55DF4 | 48.0 kW | three phase | 68.0 dBA | 1499.0 kg | 379.0 L |
| Olympian GEP65-9 | 48.0 kW | 3 | — | 874.0 kg | 219.0 L |
| Doosan G60-SIIIA | 48.0 kW | Single | 92.0 dBA | 1734.0 kg | 177.0 L |
| John Deere HJW 55 M6 | 48.0 kW | L-N | L-L | 69.0 dBA | 645.0 kg | 145.0 L |
| Westquip WQ45T4Y | 48.0 kW | — | — | 646.0 kg | 355.0 L |
| Simson-Maxwell SDAC50 T6-T3 | 49.0 kW | 3 | — | 829.5 kg | 508.8 L |
| Kohler KDI 3404 TCR | 49.3 kW | — | — | 394.0 kg | — |
Among 45–50 kW Diesel generators in this comparison, the MTU 4R0080 DS55 is quietest at 62.0 dBA.
Among 45–50 kW Diesel generators in this comparison, the Kohler KDI 3404 TCR is lightest at 394.0 kg dry weight.
Among 45–50 kW Diesel generators in this comparison, the Simson-Maxwell SKW30 T6-T3 has the largest fuel tank at 710.4 L.
Not every model reports every spec — blanks mean the source document didn't state that figure, not that the value is zero.