4 400–405 kw natural gas 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 |
|---|---|---|---|---|---|
| MTU 12V0183 GS400 | 400.0 kW | 3 | 85.5 dBA | 5228.0 kg | — |
| Cummins/Onan C400N6 | 400.0 kW | 3 | — | — | — |
| Generac MG400 | 400.0 kW | Three-Phase | 93.0 dBA | 3823.0 kg | — |
| Generac SG400 | 400.0 kW | Three-Phase | — | 3823.0 kg | 21.9 L |
Among 400–405 kW Natural Gas generators in this comparison, the MTU 12V0183 GS400 is quietest at 85.5 dBA.
Among 400–405 kW Natural Gas generators in this comparison, the Generac MG400 is lightest at 3823.0 kg dry weight.
Not every model reports every spec — blanks mean the source document didn't state that figure, not that the value is zero.