Whilst I have seen 37 mpg on a long run now I have crise control the weighted avg is 28.7 and the standard deviation 4.5.
I run50:50 on E5 since E10 arrived and that has raised the weighted avg by just under 2 mpg in the last 8000 miles


JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"