But OP's screen is overall MPG for the mileage...
Mine, for 700 after 1st 1000 (reset MPG at 1000), is 24.3 FWIW
3 MPG screens:
Fuel Economy:
- overall Average MPG since last manual reset (after resetting at 1000 miles, plan to let this one go for the life of the vehicle)
- graphical bar shows the instantaneous MPG
View attachment 4767
Accumulated Info
- MPG for the mileage indicated since last manual reset (used as my fill-up to fill-up trip odometer)
View attachment 4768
Drive Info
- MPG for the mileage indicated since last manual or automatic reset (after 4 hours if vehicle is not driven)
View attachment 4769
FWIW
For me then, both Fuel Economy and Accumulated info should both match since I never reset them.