67 20–25 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 |
|---|---|---|---|---|---|
| Caterpillar D20-6 | 20.0 kW | — | — | — | — |
| Caterpillar D20 | 20.0 kW | 3 phase | — | 620.5 kg | — |
| Caterpillar XQ20 | 20.0 kW | 3 | 63.0 dBA | 921.0 kg | 171.0 L |
| Northern Lights M844LW3 | 20.0 kW | 1 | — | 33.0 kg | — |
| Northern Lights M20CRW3 | 20.0 kW | 1 | — | 372.0 kg | — |
| Cummins/Onan C20 D6 | 20.0 kW | 1/3 | 68.4 dBA | 442.0 kg | 174.0 L |
| Kohler 20EFKOZD | 20.0 kW | 1 | — | 490.0 kg | — |
| Kohler 20EOZD | 20.0 kW | 1 | — | 375.0 kg | — |
| Kohler 20EFOZD | 20.0 kW | 1 | — | 387.0 kg | — |
| Northern Lights NL488W2 | 20.0 kW | — | — | — | — |
| Cummins/Onan MDKAE | 20.0 kW | Single/Three | — | 365.2 kg | — |
| Kohler 20EKOZD | 20.0 kW | — | — | — | — |
| Emsa E BD XX 0025 | 20.0 kW | — | — | 801.0 kg | 82.0 L |
| Generac RD020 | 20.0 kW | 1Ø, 3Ø | 70.0 dBA | 714.0 kg | 170.3 L |
| Magnum MTT25 | 20.0 kW | 1 and 3 | — | 2368.0 kg | 931.0 L |
| Magnum MTT25CAN | 20.0 kW | 1 and 3 | — | 2368.0 kg | 931.0 L |
| Generac MLT4200IF4 | 20.0 kW | Single | 68.0 dBA | 1033.0 kg | 194.5 L |
| MTU MTU 4R0055 DS20 | 20.0 kW | 1 | 64.7 dBA | 750.0 kg | — |
| Kohler 20REOZD | 20.0 kW | Single | 64.0 dBA | — | 152.0 L |
| Magnum MLT4200IF4 | 20.0 kW | single phase | — | 955.0 kg | 190.0 L |
| Cummins/Onan DGAB | 20.0 kW | I,3 | — | — | — |
| SDMO MONTANA | 20.0 kW | Three-phase | 91.0 dBA | 950.0 kg | 100.0 L |
| Magnum MLG 20 | 20.0 kW | 1Ø | 68.0 dBA | 660.0 kg | 212.0 L |
| Magnum MLG20ICAN | 20.0 kW | 1Ø | 68.0 dBA | 660.0 kg | 212.0 L |
| Doosan L20 | 20.0 kW | Single phase | — | — | — |
| Kohler 20REOZK | 20.0 kW | 3 | — | 520.0 kg | — |
| SDMO TM20UC | 20.0 kW | 3 | 77.0 dBA | 500.0 kg | 36.0 L |
| SDMO T20UC | 20.0 kW | 3 | 67.0 dBA | 560.0 kg | — |
| SDMO J20U | 20.0 kW | 1 | 78.0 dBA | 750.0 kg | 100.0 L |
| Generac SD020 | 20.0 kW | Three-Phase | — | 934.0 kg | — |
| Generac Number | 20.0 kW | 3-phase | — | — | — |
| Generac MLG25 | 20.0 kW | — | 68.0 dBA | 744.0 kg | 211.98 L |
| Generac SD020T | 20.0 kW | Three-Phase | — | 586.0 kg | — |
| Magnum MMG25FHI | 20.0 kW | single/three | 68.0 dBA | 1038.0 kg | 401.2 L |
| Wacker Neuson G 25 | 20.4 kW | — | 65.0 dBA | 867.0 kg | 221.0 L |
| Kohler 20.5EFKOZD | 20.5 kW | 1 | — | 431.0 kg | — |
| Kubota 4318 | 20.6 kW | 3/4,3/4 | 82.0 dBA | 380.0 kg | 79.0 L |
| Kohler 21EKOZD | 21.0 kW | 1 | — | 422.0 kg | — |
| Lister Petter GS20DE-LN | 21.3 kW | — | 75.8 dBA | — | — |
| Aurora Generators AGi20P | 21.3 kW | — | — | 242.0 kg | 45.0 L |
| SDMO T 27 HK | 21.6 kW | 3 | 81.0 dBA | 460.0 kg | 100.0 L |
| MQ Power DCA25SSIU2 | 22.0 kW | 1 and 3 | 64.0 dBA | 635.0 kg | 65.0 L |
| Northern Lights NL844T4E | 22.0 kW | 1 | — | 580.0 kg | — |
| Kubota SDG13LX-581 | 22.0 kW | 3 | 84.0 dBA | 580.0 kg | 100.0 L |
| AKSA AD22 | 22.0 kW | — | — | 600.0 kg | 100.0 L |
| Westquip WQ25LT | 22.0 kW | 3 | — | 1315.0 kg | 250.0 L |
| MQ Power DCA25USI | 22.0 kW | 3-phase | 56.0 dBA | 1036.0 kg | — |
| Lister Petter GS20DE-LM | 22.4 kW | — | 75.8 dBA | — | — |
| Kohler 23EOZD | 23.0 kW | 1 | — | 387.0 kg | — |
| Westquip WQ25 | 23.0 kW | — | — | 476.0 kg | — |
| Kohler 20REOZT | 23.0 kW | — | — | — | — |
| Isuzu ML23IMRD | 23.0 kW | 1 | — | — | — |
| Kohler K25 | 23.4 kW | — | 81.0 dBA | 709.0 kg | 100.0 L |
| Perkins 403D-15 | 24.0 kW | — | — | 197.0 kg | 180.0 L |
| Perkins 404D-22T | 24.0 kW | — | — | — | — |
| FG Wilson P27 | 24.0 kW | 3 | 69.0 dBA | 621.0 kg | 230.0 L |
| Kohler 24EKOZD | 24.0 kW | 1 | — | 431.0 kg | — |
| FG Wilson PH24E2S | 24.0 kW | — | 98.0 dBA | 439.0 kg | 45.0 L |
| Kubota SQ-3300 | 24.0 kW | Single phase,3 Phase | 64.0 dBA | 699.0 kg | 62.0 L |
| FG Wilson 1103 | 24.0 kW | Three-phase | 70.0 dBA | 699.0 kg | 71.0 L |
| FG Wilson 1104 | 24.0 kW | Three-phase | 70.0 dBA | 699.0 kg | 71.0 L |
| FG Wilson P33-1 | 24.0 kW | single | — | 827.0 kg | 161.0 L |
| Aurora Generators AGi24Y-E | 24.0 kW | — | 76.0 dBA | 180.0 kg | 45.0 L |
| FG Wilson LH 30 | 24.0 kW | — | — | 428.0 kg | 44.0 L |
| Generac MLG 15 | 24.2 kW | 1-phase | 70.0 dBA | 646.0 kg | 211.98 L |
| Perkins 1100 | 24.2 kW | — | — | — | — |
| Lister Petter LLD 275 | 24.8 kW | 1 or 3 | — | 456.0 kg | 66.0 L |
Among 20–25 kW Diesel generators in this comparison, the MQ Power DCA25USI is quietest at 56.0 dBA.
Among 20–25 kW Diesel generators in this comparison, the Northern Lights M844LW3 is lightest at 33.0 kg dry weight.
Among 20–25 kW Diesel generators in this comparison, the Magnum MTT25 has the largest fuel tank at 931.0 L.
Not every model reports every spec — blanks mean the source document didn't state that figure, not that the value is zero.