Having not bothered checking my MPG for the last 18 months of the 2 years I've owned my Twingo I checked it this weekend.
Blackpool -> Birmingham, full car (4 people and a bit of luggage), filled up with V-Power on the way in the morning and reset the trip computer before I even started the car. Drove down to Birmingham at an indicated 75-80, not a lot of traffic about so didn't need to slow down or speed up much aside from the M6 toll where I knocked it up to 90 (Kph, your honor), M6 toll also included a full bore sprint back up to cruising speed(!). Same again on the way back home...
Final result, 305 miles driven, average speed of 64mph (Off my phone, not sure how accurate that is) - 30.23L to fill (Same pump as I used in the morning)... 46mpg! I was amazed - Twingo definitely earned it's keep this weekend!
I can only wonder what I'd have gotten if I had cruise control to use and less 'enthusiasm' away from the toll booths.