Block fuel is less

When I plan a flight through simbrief and add my departure and destination airport and choose the correct plane, and in fuel setting I just do P05 because A32nx use 5% more fuel, so the issue is that when I generate the flight plan the block fuel is 4.7kg and same flight plan when my friend make with everything same thing he get block fuel of 8.1kg,

Maybe share a picture of both flightplans, so it’s easier to figure out what’s wrong/different

sure here is the picture of flightplans try to make i yourself



The fuel calculation for your flight looks fine, I don’t see any problems.

Can you send the same screenshots for your friend’s flight?

Best regards,

I dont know today he got less than me.


but most of the time he get more fuel with default setting.

Try using the “Share Flight” function if you want to ensure both of your flight plans are identical. There can be small variations due to any number of different options you or your friend have set.

Best regards,

okay thanks next time I will use the share flight plan only
:heart:

At first I thought it could be a Cost Index matter but then I red your post. I don’t know if Inibuilds A320N uses/calculates CIs, but the FBW one does not. That means, it doesn’t matter if you put 0 or 100 in the MCDU. It will always use the same speeds, however Simbrief does return different cruise speeds for different CIs. However in the screenshots you shared both are using CI10. Once again, idk regarding Inibuilds, but for the FBW to match the speed with Simbrief, you have to plan your flight with CI43-45. Of course, if you plan the flight with a too low CI on Simbrief, you will end Fly faster and burn more fuel than you/Simbrief planned.

okay from next time I will add more CI value.