UK units vs US units problems?
 

I keep track of every drip of fuel and every inch I travel the old fashioned way (well semi old fashioned,spreadsheet)
I am an English user, so I convert my litres by 4.55 to get my UK MPG, right?
Well the only time Fuelly reflects these figures correctly is when I set US units,if I set UK units my MPG goes from 73 to 88 which is wrong.
Whats going on here please, am I missing something?
Richie.

It sounds like you're doing some sort of conversion before entering your fuel-up numbers that you don't need to. You should be able to enter the numbers you get at the pump.

Looks like you're tracking via tripometer readings. Are you tracking in kilometers or miles?

I only input the pump numbers into Fuelly, I do my own conversions alongside.

I record in miles.

ok, sounds like the problem is in your conversions. Take your latest fuel-up and try entering the numbers at this calculator.

Looks like you put in around 19 litres and you drove 360 miles. That gives me around 86 MPG--which is what Fuelly is showing for your latest fuel-up when the site is set to UK units.

By the way, I find Google very handy for doing unit conversions. For example, here's 19 litres in Imperial Gallons. Google does the math and shows the numbers at the top of the page.

Did it with the calculator and it came out the same as Fuelly says 71.4 mpg.

Heres the stats, 22.92 litres of petrol, at 111.9p, 360 miles covered.

Which fuel-up are you calculating? I don't see a fuel-up on Fuelly that has 22.92 litres of petrol. I'm looking at your fuel-up log, and I see a fuel-up on August 22 with 19.1 litres and 360 miles. Do you see the same numbers? Are those numbers correct?

22nd August 22.92 litres which is 5.04 Imp Galls.

Are those the numbers that you see on this site when you visit this page?

No.

I have already got that link you sent at 12:18 pm.

I just don't understand how setting to UK units makes my mpg into the 80s, when I know from doing the maths that its 70s.

Heres a few of my stats to prove that I get approx 70 mpg.

1, 32.66LITRES, 494 MILES 68.80MPG

2, 27.34LITRES, 427MILES, 71.05MPG

3, 22.09LITRES, 357MILES, 73.61MPG

Worked it out, fuelly works only with US gallons whether uk or metric, yes?

No, Fuelly works with UK gallons.

I think problem is that the numbers you have entered at Fuelly do not match the numbers you're showing me here. I think you need to edit your fuel-ups so that the number of litres you're telling me here match the number of litres you see on the site. Once you do that, the correct MPG should follow.

OH, I think I understand now! You have your vehicle set to enter fuel volume in gallons, not litres. Yes, for fuel entry, we only support US gallons. It's our understanding that in the UK you get numbers in litres at the pump, right? Are you converting from litres to UK gallons in order to post to Fuelly?

Yes.

Why?

Because when I select UK or Metric it only offers me to enter in US gallons,is there another way then?

Yes, when you create a vehicle you choose which units you want to fuel-up with. It looks like this:

https://www.fuelly.com/images/new-car-choices.png

So the choice you wanted was Litres. You'll probably want to create a new vehicle with different reporting choices and re-enter the fuel-ups you have with litres instead of gallons.

Aha,thats great thanks.

In fact I went to edit vehicle and the option for mixed was there.

Thanks pb

Sure, sorry about the roundabout way of getting to this point. You'll probably need to go in and edit those fuel-ups to reflect the amount in litres instead of gallons. Once the reporting units are set for a vehicle, the system assumes all fuel-ups are reported that way.

The cleanest way to start over is creating a new car. Just keep that in mind if problems crop up.