Challenger 605 vs G400
The G400 leads, topping 7 of 7 compared metrics.
Put the Bombardier Aviation Challenger 605 (introduced 2006) beside the Gulfstream Aerospace G400 (introduced 2023) and the trade-offs sharpen fast. Both are business jets, which makes them natural cross-shopping rivals. The clearest separation between them is cabin capacity, where the G400 carries more passengers. We line the numbers up below, then translate them into the mission each aircraft actually wins.
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Challenger 605 vs G400: the key differences
- The G400 delivers 5% more range (Challenger 605: 4,000 nm; G400: 4,200 nm).
- The G400 delivers 4% more cruise speed (Challenger 605: 459 kt; G400: 476 kt).
- The G400 delivers 58% more passenger capacity (Challenger 605: 12 seats; G400: 19 seats).
- The G400 is the newer design (introduced 2023 versus 2006 for the Challenger 605), a gap of 17 years that usually shows up in avionics, cabin systems and fuel burn.
- The G400 is the larger aircraft by maximum takeoff weight (74,600 lbs versus 48,300 lbs), which typically buys more cabin and payload at the cost of higher trip economics.
Which mission suits which aircraft
Both aircraft are built for long-haul and transatlantic missions, so outright range rarely separates them — the call leans on cabin (the G400 seats more), trip economics and what is actually available on the market. Match the airframe to how you fly most weeks, not to the headline range figure.
Which should you choose?
On published specifications the G400 leads on both range and cabin capacity, so it suits operators who want maximum mission flexibility from a single airframe. The Challenger 605 can still be the smarter buy on acquisition cost, operating economics, runway performance, or current availability — the factors that rarely show up in a spec sheet. Our acquisition advisory team can model both against your actual mission profile before you commit.
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Challenger 605 vs G400: FAQs
Which has the longer range, the Challenger 605 or the G400?
The G400 has the longer published range — 4,200 nm versus 4,000 nm for the Challenger 605.
Does the Challenger 605 or G400 seat more passengers?
The G400 carries more passengers at maximum configuration — up to 19 seats, compared with 12 on the Challenger 605.
Which is faster, the Challenger 605 or the G400?
The G400 cruises faster, at 476 kt versus 459 kt for the Challenger 605.
Which is newer, the Challenger 605 or the G400?
The G400 is the newer design, introduced in 2023 versus 2006 for the Challenger 605.
Is the Challenger 605 or the G400 the larger aircraft?
By maximum takeoff weight the G400 is the larger aircraft — 74,600 lbs versus 48,300 lbs for the Challenger 605.
Should I buy the Challenger 605 or the G400?
On published specifications the G400 leads on both range and cabin capacity, so it suits operators who want maximum mission flexibility from a single airframe. The Challenger 605 can still be the smarter buy on acquisition cost, operating economics, runway performance, or current availability — the factors that rarely show up in a spec sheet. Our acquisition advisory team can model both against your actual mission profile before you commit.
Still weighing up the Challenger 605 vs G400?
Specs only take you so far. Our advisors give an independent recommendation based on your mission, budget and how you actually fly — and represent your side through to purchase.