VGT Series vs Cummins QSB 5.9 – How do we Compare?

 

 

The VGT Series of marine engines is MarineDiesel’s flagship product. We originally aimed to make the lightest, most powerful, most reliable engine available in the market, and we succeeded where others have not.

So, how does the VGT Series compare to others?

Price:

MarineDiesel VGT: Mid-range

Cummins QSB 5.9: Low

*Price will vary greatly based on many factors, including import duties and dealer markups, but in general

 

Cost of Spares:

MarineDiesel VGT: Mid-range

Cummins QSB 5.9: Mid-range

*Note: The Cummins engines are sold and serviced through the CMD network, which is largely focused on the recreational market

 

Rating:

MarineDiesel VGT: Commercial / Military Medium to Heavy use

Cummins QSB 5.9: Recreational

 

Engine Block:

MarineDiesel VGT: V-8

Cummins QSB 5.9: Inline 6

*Inline cylinder arrangements tend to produce higher levels of vibration

 

Weight:

MarineDiesel VGT: 500 kg

Cummins QSB 5.9: 658 kg

 

Fuel Consumption:

MarineDiesel VGT: Max 220 g / kWh

Cummins QSB 5.9: Max 235 g/kWh

 

Curves:

Cummins QSB 5.9 Power Curve

Cummins QSB 5.9 Power Curve

MD VGT 450 Power and Torque Curves

MD VGT 450 Power and Torque Curves