No offence bro, but that just made me remember a classic joke where a sardar says he is not concerned with the fuel price hike, as he always fills for 100 rupees!!!

But again, I guess you aren't monitoring your consumption every time you fill up - so a top-up of 750 does the job...right?

The best way would be refilling before it reaches blinking state!

and calculate.
Full tank --> ride some 200kms and refuel it full tank and then calculate.
Refueling it at blinking might kick off some unwanted calculations.

Additionally average would matter with lots of factor:

1. Roads you ride
2. Frequent braking or change of gears.
3. Riding style.
4. Tyre pressure, etc..

Try riding your bike in economic mode with control on wrist as 100cc for some days!

If this all too don't work to get some better result then surely get your FI checked or quality of fuel.

BTW does really a 250cc machine rider care for mileage ??

How is your performance i.e pickup/Top Speed/ Engine heat etc ?

Bro, what exactly do you mean by unwanted calculations? Basically we are only considering the total fuel consumed. (Qty of fuel it takes to fulltank = Qty of fuel consumed since the last fillup). So regardless of whether it is 9 liters, 10 liters or 11 liters we fill - that will be the amount which has been consumed since the last top-up. And your trip meter will show the corresponding kms done. I can't see any errors arising out of this method, and there is no involvement of the 'blinking bar' indicator either. It's a simple, linear calculation without any adjustments.

I'll be happy if you can correct me if I am wrong.

BTW, even a person riding a 1800cc Intruder would be worried about his FE if his FE doesn't match another Intruder's FE under similar circumstances.

naah. thats not what i meant.. if you check my previous posts i mentioned.. it takes fuel between 720-750 odd to reach the inner metal cap... whatever is the measure (9.42, 9.5, 9.7 etc etc ) i always make a note and then calculate the FE.. sometimes it does leaves space or maybe i was cautious not to fill too much to reach 10L.. so making a precise note always. i do not depend on the Fuel price. it keeps going up and down but i keep a tag for the volume i take.. though its weird to keep checking to point values but i do..


hope that clears it

I use an app called Fuel Calculator to keep a track of all my averages. I just punch in the data once I fill up - kms covered since last fillup and quantity filled in current fillup.
(there are several apps by this name, but this particular one meets my requirements perfectly and has a lovely interface too, with graphs and loads of information!)
I make it a point to fill up to one particular level everytime, so regardless of the bill amount and quantity filled, I fill to the same level. Sometimes I over-run the bike and have to fill more than my regular amount to reach that level. My fill ups have varied from 720 bucks to 830 bucks, depending on fuel prices.

Nope !! you ain't wrong, Logically it won't effect.

But practically to ride full 10 liters of kms it will calculate approx 350-400kms if I am not wrong. And riding these kms in 40-60kmph won't be possible, individual will get bore and rip it some time.
Making it mix figure.

So I was just pointing to ride 200-250kms and refuel it and calculate, these figures are small and can be ride in 40-60kmph or 70-80kmph. giving good figures.

What ever speed ride, but it should be in a range it should not vary from 40-80kmph it should be in a group like, 40-60 kmph or 60-80kmph so we can get a better figure.

nothing else !!

on what rpm do you change gears?
i am going to meerut and then mathura next week. have downloaded fuel calculator so that will see if is there something wrong with my bike or with my ride styling or with my calculations.

Depends entirely on my mood

Usually on my office commutes, I encounter bumper-to-bumper traffic and hence shift at around 4500. But if I get a chance for some spirited riding, I don't mind pushing it all the way till 8500 RPM.

I found the best way to calculate FE is using fuelly.com . i am tracking FE on this website for more than 13k kms and the average that i got is around 28kmpl. it ranges from 24-37.8kmpl. under city i get about 27-28kmpl. On the highways if i am ride at more than 130kmph, the FE drops to 25 and if i ride at around 100kmpl i get amazing figure of more than 35.

Honda CBR 250R

Well here is what I do to track fuel efficiency. As soon as last line starts blinking I reset trip to zero and say I fill petrol of 600rs and keep in mind fuel price per litre while filling(75.20) .Again when last line (in fuel guage) blinks I write down the value say around 260kms ,,. Now the formula I use is

Kms run(260) / Fuel filled (600rs)* Price of petrol per litre

using this method my mileage is constant and varies only in .xx kms. So I find this method most accurate as there is not much fluctuation in mileage I am getting.
Doesnt matter how much fuel u fill , just consider the above method once.

But Samarth, how would you ensure integrity of data in this case? For example, your last bar starts blinking at 250 kms on the trip meter. You don't find a bunk nearby, and ride for 10-15 kms before filling up again. Then you re-fuel for 600. But the next time the bar starts blinking, you wouldn't have exhausted the entire 600 rupees worth of fuel (as some amount of that fuel would be used to compensate for the extra consumption) - won't this lead to incorrect calculation?

Honda CBR 250R

Sorry about the length.
I knew exactly this question would be asked. Many argue at my answers but realise the same after few days. To check accuracy on the method said try the procedure twice and I assure u that the readings will be accurate.

My explanation goes like this. - last bar blinks , you reset your trip and u ride 30kms(using 1lite fuel approx) to reach a near by pump and fill 5 litre fuel. So what happens is one litre used up in reserve is filled first and remaining 4 liters is the extra fuel filled.

What happens above is u reset trip as soon as last bar blinks, use up 1litre fuel. Fill 5 liters in a nearby pump makes usable 4 liters(1litre is compensated to used up reserve) and u have 4 liters for use after which last bar blinks again. So u basically you use up all 5 litres

It's a bit complex and unacceptable for starters but I kindly suggest you to try this a few times and u will gradually understand how it works. I have been checking FE the same way since 8 odd years but of course accuracy in FE vehicles depends on fuel gauage which I find reasonably accurate on the Cbr. I get constant mileage n figures are (from past 4 refuels ) 33.59, 33.66, 33.78 , 33.65 which is very near an accurate

GOLDEN RULE: Reset trip as soon as last bar blinks and refuel whenever possible

what i do is i fill my petrol tank upto the inner brim and note down kilometers , petrol quantity and rupees. then after that whenever it blinks i again fill it upto the inner brim with kilometers, petrol quantity and rupees (rupees doesnt affect calculation)
for example
1. petrol 9.25ltr and 12000kms(full tank)
2. petrol 10ltr and 12320kms(full tank)

so 320kms 10 ltrs equal to 32kmpl.
have always get 19 - 26 kmpl

Everybody has their own method of calculation. I tried three and found the one using to be most accurate (atleast to me . I tried filling upto brim but somehow got wide fluctuations. Maybe I was doing it wrong. But happy that I found a stable method

@samarth ... bro I followed fulltank method and your method(which I thought earlier that I'm only following often :P ) on both of my bikes fz and cbr..and yes you are correct mileage figure fluctuation is far less on your method(70% of time mine also ).. but my freinds says that this method is incorrect and told me to follow only full tank ..