I've got a 66 reg Aygo which I've owned since 2018. The multi function display in the middle of the dashboard shows something that is not explained in the handbook. I leave the display on the 'AVG MPG' reading most of the time, so when I get in the car and start the engine I expect it to show that - at present it is 62.1. What actually happens is that when I turn the ignition on (it is a basic model with keyed ignition) the AVG MPG display shows 4.6 instead. Once I start the engine, after a few seconds the display changes and it displays the actual MPG figure. Can anyone possibly explain what the other number is?
Attached are some pictures so you can see exactly what I mean:
1. Odometer displayed after opening the driver's door and before inserting the key.
2. After inserting key and turning to ON, AVG MPG is displayed, but shows value 4.6, which is what I don't understand.
3. After starting the engine, after a few seconds 4.6 changes to 62.1, the actual fuel consumption figure.
Any ideas? 🤔