I've said it before, but I'll say it again, it doesn't really matter how the optimum fuel consumption is arrived at. nor does it matter if certain journeys are down to the 40-50mpg range. or even up to the 80-90mpg range.
I just leave it to the Honda boffins to determine the most efficient mode, although like most members I assume that the most miles in EV mode will equal the best consumption.
To that end, I mostly drive in 'B' mode to promote maximum regeneration where possible and for me 'Econ' mode takes the edge off the performance. so I leave it Off.
No, what matters is the overall mileage covered, against fuel used, which for me as the attached photo shows is today 10727 miles at 67.6mpg ( the 'B' trip only reads to 3 decimal places, hence it only shows 727.8 miles), however I can assure everyone that it was set when the car was new and has not been reset at any time.
I guess I should say, that most of my motoring is journeys in the 10-15 mile range, urban and semi urban, with little motorway use
And so, having had 5 Jazz cars, all automatic (1 I-shift & 3 CVT) this MK 4 EX is the best car yet, particularly with fuel costs as they are at the moment.