Maths experts....calculating mpg

What does start range projected mena?

If for example you drive 10 miles at a steady speed of 60 mph in top gear on the A1 your gauge will calculate that you can do say 200 miles with the fuel left. If you then enter a town start using lower gears, go slower, starting, stoping whatever, your gauge will then recalculate going off your current driving conditions and you will find your 200 miles is now only say 140.

That was my point. When you have started your journey and looked at your miles you must have then drove more economical and it has recalculated and is telling you that driving as your driving now that’s how far your fuel will take you. Jump in the car on next journey and red line it in every gear and it will recalculate again and tell you that you can only go 30 miles instead of your previous projected 120

Yes, of course it does (doesn't any shed)?

When I was working I was doing circa 35k miles pa.

Now I do less than 3k miles pa as it's mainly local.

The figures quoted were for a 26 mile cruise, of mainly A roads and motorway,
so I'm just curious as to what might be the best possible mpg.

I'm not that bothered, as five of my last seven cars did, at best, low twenties!

I've been tracking my MPG for years; it keeps me in touch with how the car is running but like LFV my mileage is relatively low these days.

How I track is by putting in a full tank, resetting the trip meter to zero and then calculating what I use next time I fill up and again resetting to zero. Simple maths does the rest.

Average MPG since I bought the car in July 2016 is 37.35
Average MPG on long trips (1 hour or more) is 40-42
Average MPG local is 32-37
Cost per mile ranges from 12p to 15p

1.6 Fiesta

A notable factor is that winter driving is more costly with a lower MPG than in the summer, hence the wide variation in local MPG

I do the same, Aspro. My driving is mainly in urban traffic and works out at around 4 miles per litre.