The instantaneous fuel consumption display has disappeared. How can I get it to show up again?

My 2.8t diesel has been driven for three years and 94,000 kilometers. The fuel consumption is still high. Does anyone have a good solution? The current display shows 10.4. With 500 RMB worth of fuel, the range display shows 550 kilometers. The fuel price here is 6.83 RMB.

How do I display the fuel consumption on the dashboard of a Volvo C30?

What does your urban fuel consumption display show?

How do you adjust the fuel consumption display on a Mazda 5?

The instantaneous fuel consumption display has disappeared. How can I get it to show up again?

Why doesn't my fuel consumption display anymore? It's always showing "——————".

Experts, is the fuel consumption display accurate? [facepalm]

How to adjust the fuel consumption display on the dashboard? It recently changed to something else, showing 33km like that. How can I change it back?

My Outlander's head-up display suddenly stopped showing. What could be the issue? Has anyone experienced this? How should I fix it? Any advice would be appreciated.

How is the average fuel consumption displayed on the Hongqi H7?