Too good to be true or software problem

[KenD]

Drove short distance back home tonight and noticed the efficiency is 20 mls/kmh.
Is a problem with the software?

 

[AdamMGEV]

Drove short distance back home tonight and noticed the efficiency is 20 mls/kmh.
Is a problem with the software?

I see you drove a very small distance. If it was downhill then it would give you a reading like this.

 

[KenD]

Good point. There are some downhills. I will check the efficiency when I go there again