I filled again on Sunday morning - twice in a week - the poor car is getting over worked

I had clocked 30km of local driving in it - then a motorway cruise to Gruyeres, then some local driving to Broc and then spirited driving over the hills to Montreux (with an AMG45 in pursuit). The fill up was 32.4l for 325km - 10l/100km or 28.2mpg in old money. Which is rather impressive in my book.
I will aim to fill her up again this week - as the chances are the steady cruise back along the motorway will have produced rather good economy.