Go to "Fuel Economy" menu in the instrument cluster display.
This is from the 2023 Renegade owners manual:
Fuel Economy
This menu item allows you to view the fuel economy of the vehicle. The following will display:
- Range (Miles or km)
- Current Consumption (mpg or L/100km or km/l)
- Average Consumption (mpg or L/100km or km/l)
Reset procedure is shown at the bottom of the display.