Specifications That Optimized Value
• Range: 6,297 km (3,400 nm): transcontinental, not transatlantic;
• Speed: 850 km/h (459 knots): same as other 2000s;
• Capacity: 8 - 12 passengers in the unchanged cabin;
• Avionics: EASy II - same as premium Falcons;
• Price: Significantly lower than EX models.
You get a 26.2 ft cabin with a width of about 7 ft 8 in and a height of about 6 ft 2 in. Cabin volume is roughly 1,024 to 1,028 cu ft, depending on the published specification.
That is a lot of cabin for an aircraft designed around a roughly 3,400 nm mission.
The other important detail is the powerplant. Two Pratt & Whitney Canada PW308C engines produce 7,000 lb of thrust each. The DX also uses the EASy flight deck architecture, and Dassault specifically lists EASy II upgrade capability for the model.
There is a trade-off here. The reduced fuel capacity is exactly what separates the DX from the longer-range EX family, so the mission needs to be right before you start comparing aircraft.