Calculating MPG

[HermanTheShee...]

Hi, I filled my tank for the first time, and was just trying to find out how far I can go etc etc.

I managed to get in 7.8 litres, up to the neck of the tank, bike on the side stand. Assuming the garage wouldn't have gone to any lengths to squeeze in petrol, and had topped it up after the 25 mile test ride.

It's a 2004 Suzuki GS500F

I done 111 miles - 25 = 86 miles

7.8 litres = 1.715 gallons = 50.1 mpg

So I should get about 180 miles out of a tank? (17 litres)

Have I worked this out right?

Cheers
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2004 Suzuki GS500F > 2006 Suzuki SV650S
My real name isn't Herman

[DAF]

Nothing wrong with your figurework. Of course, your estimated range on a full tank assumes the same fuel economy throughout although in practice this might vary depending on your style of riding.
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2005 Yam Fazer (FZ6-S)

[Rookie]

That sounds about right to me, a GS500 should bring back some decent miles. I get about 35mpg, frankly I thought I'd get more. C'est la via!

[mattsmith95]

Checked the figures, that's okay, I do it a different way.

Example

250 miles for 13 litres

250 divided by 13 = 19.23

19.23 multiply by 4.546 = 87.42

So I know how many miles per litre and per gallon

[HermanTheShee...]

That's great, means I can get to work an extra day before having to fillup

It's just to work out petrol Monday to Friday, mostly motorway cruising, and if I keep the speed down I should get a bit more
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2004 Suzuki GS500F > 2006 Suzuki SV650S
My real name isn't Herman

[craigs23]

Remember that those are average mpg figures and you may not get a full 17 litres in your tank. I usually fill up around 10-15 miles after switching to reserve, even though theoretically there should be enough fuel to see another 10 miles or so.

[kawakid]

Used bike for work business other day.

Did 75 miles, at a steady 70mph, refilled tank 4.5 litres, which worked out at 76mpg.

Won't normally do that commuting, but at that steady speed it was fantastic.
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I've a twin and a 4.

[Nath]

I wouldn't try to calculate your mpg off half a tank of petrol. A full tank will give a more accurate figure.

I just filled up with petrol on my way home from work with the trip counter showing 135 miles without having gone onto reserve. Last week I was "making good progress" everyday on my way to work, and managed only 60 miles to a tankful Gave me quite a fright as I'm used to riding a twin.
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Hard livin', hard luck.

[Simple]

could use this https://www.torquecars.co.uk/Tuning/uk-mpg-calculator.php

I rid ea gpz500s, my MPG varies, Gunning it off lights on a more spirited commuter drinks fuel, thrashing on a rideout gains a better mpg than a commute due to the stop start nature of commuting.
Best mpg is bimbling at constant throttle on motorway.

currently getting 54mpg out of the GPZ, that's meets at night, college and back each day.
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Insta - FemFeral

[doggone]

A good rough guide to how you're doing is to remember that 10 miles to a litre is about 50mpg.
So when you fill up you have a good idea i.e. more than 10 miles to each litre is reasonable.

[MarkJ]

I made myself a mileage calculator in excel for work. Just put in the miles, price per litre and cost in pence and it works out all the stuff for you

[HermanTheShee...]

Cool! I done mine in excel too but it wasn't as well done as that
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2004 Suzuki GS500F > 2006 Suzuki SV650S
My real name isn't Herman

[mattsmith95]

There are many factors that can change MPG, slack chain, tyres not at the correct pressure and the weather.

You will be surprised how many miles you lose per tank if your tyres are not pumped up properly and/or your chain is loose.

Also time of year, at the moment I'm getting great fuel stats, about a month ago the stats were not as good but that was because
the weather wasn't so warm.