I found this information in the Boeing Press Release about the Air NZ 773ER purchase. Also claim 20% better fuel consumption than nearest competitor. I assume this is 346.
It seems like a large improvement.
"Since entering into service in 2004, the overall fuel efficiency of the 777-300ER has been improved by 3.6 percent through a combination of improved fuel burn in service and enhancements to the airplane."
Ruscoe
777-300ER Fuel burn improves 3.6% since Introduction
Moderator: Latest news team
I recall 12-15% being talked about.
That is such an iffy subject, as I am sure one side downplays their fuel burn, ant the other will want to make it look better. Also, one side pax count and route length can be different, and if you dense pack them vs decent room, you can make it look better, at the cost of decent comfort.
Can they carry more freight?
Its been dramatic enough that its pretty well shutdown the A340 line.
And you also have to factor in fewer engines means fewer failures, less maintenance as well as how well the systems work.
You factor it all in, and sometimes it seems that despite the A340 handicap, it works for some airlines on some routes.
That is such an iffy subject, as I am sure one side downplays their fuel burn, ant the other will want to make it look better. Also, one side pax count and route length can be different, and if you dense pack them vs decent room, you can make it look better, at the cost of decent comfort.
Can they carry more freight?
Its been dramatic enough that its pretty well shutdown the A340 line.
And you also have to factor in fewer engines means fewer failures, less maintenance as well as how well the systems work.
You factor it all in, and sometimes it seems that despite the A340 handicap, it works for some airlines on some routes.