My wife managed 34.2mpg according to the trip computer. This was on a drive from the northwest to Hereford and back using the A49 and a short drive on the M6.

I stopped looking at the fuel economy figures when I realised I didn't give a flying

I also turned off the percentage battery indicator on my iPhone.

It has been very liberating!

If you must track consumption, then I recommend litres per 100 miles because although a higher figure (say 10 litres, bad) is worse than a lower one (say 7 litres, good), if you are more familiar with MPG then it makes you feel better when you're giving it the beans. L405 P400e Autobiography (MY2020)... Silicon Silver / Espresso
RRS TDV6 HSE Lux (MY2011)... Nara Bronze / Arabica - now gone!