L-39 has wildly unrealistic fuel consumption rate in MSFS 2024 on Xbox

ISSUE DESCRIPTION

Description of the issue:

The default L-39 does not consume fuel at a realistic rate, at a rate of 3 gallons per hour. This was done at full throttle for at least 45 minutes. This has been a long standing bug. I loaded it with 168 gallons at start and flew for at least an hour and 10 minutes, and it ended with 165 gallons left, using only 3 gallons. This is a problem at all altitudes.

(https://www.csobeech.com/files/L39DataSheet.pdf) This is a datasheet for the correct numbers

FREQUENCY OF ISSUE

Every time

REPRODUCTION STEPS

Please list clear steps you took in order to help our test team reproduce the same issue:

  1. Load up L-39 with fuel in the EFB.

  2. Fly for at least an hour with throttle at full power.

  3. See that only 3 gallons have been consumed

MEDIA

Microsoft Flight Simulator 2024-2025_10_18-20-54-50.png

Items Shared on 10-18-2025

The bug is still present. Any info if it’s gonna be solved?