Cummins QST30G2 vs MTU MTU 12V2000 G65
The Cummins QST30G2 and MTU MTU 12V2000 G65 are both diesel generator engines in a similar power class. Both are rated at roughly 861 kVA. Displacement is 30 L versus 23.88 L. The table below compares their full specifications side by side.
| Specification | Cummins QST30G2 | MTU MTU 12V2000 G65 |
|---|---|---|
| Headline rating | 860 kVA | 861 kVA |
| Standby (50 Hz) | 688 kWe | 689 kWe |
| Prime (50 Hz) | 643 kWe | 626 kWe |
| Standby (60 Hz) | 800 kWe | — |
| Prime (60 Hz) | 740 kWe | — |
| Displacement | 30 L | 23.88 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | United States | Germany |
Choosing between Cummins QST30G2 and MTU MTU 12V2000 G65
Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The MTU MTU 12V2000 G65 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.