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Airbus Acj319 vs Boeing Bbj Max 8 vs Gulfstream G400

The Airbus ACJ320 and Boeing BBJ MAX 8 are “VIP airliner” conversions in the large-cabin category, designed to provide a wide-body-style cabin experience from single-aisle airframes, while the Gulfstream G400 is a purpose-built large-cabin business jet focused on efficiency and airport flexibility. In range terms, the BBJ MAX 8 is generally positioned as the longest-legged of the two airliner-based options, with the ACJ320 also offering long intercontinental capability depending on tank and configuration choices; the G400 offers true long-range business-jet performance, typically shorter than the VIP airliners but still suitable for many transoceanic missions. Passenger capacity differs most by mission: ACJ320 and BBJ MAX 8 can be outfitted for very high headcounts in airline-style seating, but in VIP layouts they typically carry a few dozen with multiple lounges and bedrooms. The G400 seats fewer overall, usually in the low-to-mid teens in standard executive arrangements, prioritizing comfort, baggage, and nonstop range over maximum headcount.

SpecBoeing BBJ 737 MAXGulfstream G400
Summary
Cockpit2—
DOC / nm$ 15.74—
Min Crew44
Total Seats1212
ManufacturerBoeingGulfstream
Aircraft NameBBJ MAX 8G400
CertificationFAA / EASA—
Max Range (nm)65554200
DOC / nm / Seat$ 1.97—
Max Cabin Seats3519
OEM VerificationVERIFIED—
Useful Load (lbs)7170030650
Standard Cabin Seats8—
Direct Operating Cost$ 7,396—
Flight Deck (Base Spec)HoneywellGulfstream Symmetry Flight Deck
Max Cruise Speed (ktas)470539
Base Aircraft Price (USD)$99,000,00034500000
Cabin
Cockpit2—
Min Crew4—
Total Seats10—
ConfigurationGreen Interior—
Max Cabin Seats35—
Cabin Pressure (psi)9—
Standard Cabin Seats8—
SL Cabin Altitude (ft)24000—
Engine
FADECYes—
ModelLEAP-1B—
TBO (hrs)On-Condition—
Flat RatingISA + 15—
Thrust (lbs)28000—
No. of Engines2—
Dimensions
Length (ft)129.7—
Wingspan (ft)117.9—
Aisle Step (ft)Flat Floor—
Cabin Width (ft)11.6—
Cabin Height (ft)7.1—
Cabin Length (ft)98.4—
Overall Height (ft)40.3—
Cabin Width - Floor (ft)10.7—
Cabin Length - Seating (ft)91.9—
Baggage Volume Ext. (cu. ft)1200—