Aircraft comparison
Gulfstream G450 vs Gulfstream IV-SP (GIV-SP)
Summary
The Gulfstream G450 and the Gulfstream IV-SP (GIV-SP) are two heavy jets, compared here on the specifications that matter. On the numbers, the Gulfstream G450 flies farther (4,350 vs 4,220 nm); the Gulfstream IV-SP (GIV-SP) carries more (19 vs 16 pax); the Gulfstream G450 is faster (488 vs 476 kt). Across 1038 benchmark city pairs in this database, the Gulfstream G450 reaches more nonstop (540 versus 516). On a route like London – Naples (3,897 nm), only the Gulfstream G450 makes it nonstop (estimated from published range).
Key differences
Range
130nm
3.0% · G450 ahead
Cruise speed
12kt
2.5% · G450 ahead
Cabin height
0.1ft
1.6% · G450 ahead
Max passengers
3
15.8% · Gulfstream IV-SP (GIV-SP) ahead
Nonstop reach
540 / 516
of 1038 benchmark routes
| Specification | G450 | Gulfstream IV-SP (GIV-SP) |
|---|---|---|
| Range | 4,350 nm (8,056.2 km)✓ | 4,220 nm (7,815.4 km) |
| Max cruise speed | 488 kt (903.8 km/h)✓ | 476 kt (881.6 km/h) |
| Max operating altitude | 45,000 ft (13,716 m) | 45,000 ft (13,716 m) |
| Max takeoff weight | 74,000 lb (33,565.8 kg) | 74,600 lb (33,838 kg) |
| Typical passengers | 14 count✓ | 13 count |
| Max passengers | 16 count | 19 count✓ |
| Cabin length | 45.1 ft (13.75 m) | 45.1 ft (13.75 m) |
| Cabin height | 6.2 ft (1.89 m)✓ | 6.1 ft (1.86 m) |
| Cabin width | 7.3 ft (2.23 m) | 7.3 ft (2.23 m) |
| Baggage volume | 169 cuft (4.79 m3) | 169 cuft (4.79 m3) |
| Powerplant | Rolls-Royce Tay 611-8C | Rolls-Royce Tay 611-8 |
| Engines | 2 count | 2 count |
| Thrust per engine | 13,850 lbf | 13,850 lbf |
Highlighted cells mark the stronger value per row (direction is per-metric). Route capability is estimated from published range; figures are not booking prices.
On a real route
London – Naples — 3,897 nm. Only the Gulfstream G450 makes this nonstop (estimate).
See the route →