Clubjazz - Honda Jazz & HR-V Forums
Honda Jazz Forums => Honda Jazz Mk4 2020 - => Topic started by: Pogglefish on November 01, 2021, 06:32:47 PM
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Just a quick couple of questions: I’m coming to the end of my first tank of fuel and I’d like to see how far the car will go before the low fuel light comes on.
Currently I have 40 miles of range left and the low fuel light is not yet on (though I am on the last blob of the fuel gauge) but the recommendation in the stereo screen has come on, that came on with 80 miles to go.
So my questions are:
- At what remaining range does the low fuel light actually come on? The manual suggests at 1 gallon left, but I presumably have less than that if my range is less than mpg (showing 61).
- Is the recommendation supposed to come on sooner than the warming light?
Cheers
- Pogglefish
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I've not seen the warning light come on as I've had two bars left on the gauge when I found somewhere convenient to refuel. However, on one of those occasions I managed to squeeze almost 35 litres into the tank so the gauge must have been about to drop to one bar. In your position I would be refilling the tank, if only to get a better understanding of the gauge accuracy.
It's also possible that Honda have become less conservative with the low fuel warning due to the Mk 4 being far less prone to guzzling fuel in a traffic jam than a non-hybrid system.
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I've only seen the fuel light once, on my first tank as I was running it down to fill it with my preferred fuel.
The miles left don't seem to go down steadily, my gauge started at 50+ miles left but then started to rapidly drop over the remaining miles.
I think the first time the fuel light comes on is when you can start the clock for perhaps 50 real miles left (1 gallon) before it's completely empty.
As bad things can happen to hybrid batteries if you run out, I now fill up between 1/4-1/2 a tank.
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I have always filled up ASAP after any warning light re fuel.
Besides you may be in a queue and just about to run over an Insulate Britain person and run out!!
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@aphybrid
Are you aware your phone number is in full view ?
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I try never to let my tank on any vehicle get much below 1/2 way. A vehicle without fuel is called a roadside ornament....
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I'm with Culzean. I might go a bit further than him but I don't like getting anywhere close to "range anxiety." My minimum is 100 miles left then I'm looking to refuel.
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Pogglefish is braver than me. I too start to get range anxiety at a quarter tank.
That said on a recent trip through Yorkshire using a preplanned satnav route I had expected to fill up at a Co op filling station only to find it wasn't supermarket prices. With my innate desire to save £1.50 on fuel and emboldened by 60 miles range remaining, and only 35 miles to the nearest Sainsburys, I pressed on beyond my normal comfort zone.
No light came on with an estimated 5 litres left in the tank . I was only able to fill 37 litres but I had brimmed it until fuel was visible as a bit of a test. (I know its not a good idea, especially in hot weather) I think this probably adds another couple of litres in the filler pipes over the official tank capacity.
(Service station attendants are still common in eastern europe. The patient and persistent ones who don't give up at the first signs of being full are able to squeeze an extra couple of litres into my Yaris diesel )
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It's amusing that Honda try to shave the last gram of weight off the car for fuel economy and yet people are happy to lug 13kg or so in fuel all the time.
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As proved very recently in the UK, fuel stations can have problems and I'd rather always have at least half a tank should I have to make a journey.
I've always topped up when just under half a tank and I've never moaned about MPG, it is what it is.
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I continue to be surprised that people are prepared to believe the “range remaining” readout in any car, to the extent that they expect to be able to go down to very low figures. Lots of people seem to disbelieve the MPG calculation, but that figure is used in calculating the range ... so why should the range figure be accurate? Personally, in my Mk3, I find the antics of the range figure fascinating to watch as it jumps up and down by +/-50 miles or more within a short distance. I wouldn’t trust it.
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As proved very recently in the UK, fuel stations can have problems and I'd rather always have at least half a tank should I have to make a journey.
I've always topped up when just under half a tank and I've never moaned about MPG, it is what it is.
Some people say 'you get the MPG you deserve'.... ;D
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Thanks everyone. I can now confirm that the warning light came on with the range showing 38 miles left though, as many have pointed out, that then dropped rather rapidly to just 4 miles (even though I only drove another 15 miles before filling up); whereupon the car took on 38 litres. :o I’ll fill up on the recommendation light rather than the warning light in future.
On the other hand, 460 miles (of mainly commuting) on one tank is very impressive, I work that out to be about 56mpg. My Mk.3 would only have managed 325 miles of that driving before needing a fill up.
-Pogglefish
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I haven't investigated, but if the Jazz fuel tank is similar to the Civic design then it's not a regular box type tank but a sort of flat pan.
The magic seats stop the regular fuel tank position so it's located under the front seats. Being a long, wide flat pan must make it difficult to measure and when low on fuel any incline may throw the gauge ?
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For everyone with "range anxiety", here the first refueling of our Jazz, immediately after receiving the new car at the dealer.
The dealer has no petrol station and delivers the car with 2 (two!) liters (less than half a gallon) and the warning to refuel immediately. We drove to a petrol station, about 4 kilometres (less than 3 miles), yes with the fuel light on. Here's what went into the tank:
30.08.2021 38,50 litres
Since that first day I have no range anxiety. Even with less than 2 liters in the tank, the Jazz still drives (to a petrol station :D).
In order not to exaggerate, I usually fill the tank with just one bar visible (and no warning light yet).
On average, about 31 to 35 liters are added to the tank: https://www.spritmonitor.de/de/detailansicht/1280885.html (see the first refueling 30.08.2021 :o )
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the Jazz still drives (to a petrol station :D).
Depends how far the petrol station is away :-X
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...Assuming the dealer stopped filling at the first 'click' I managed 445 miles on first tank and it took 32.5l to get back to first click again. So about 62ish mpg.
On the mk2 Jazz I would normally wait until after the low level warning had appeared (and then some) before filling but in this instance I needed to there and then. May just fill on last bar in this car though.
I did travel 125 miles after the warning light came on once in a 1992 'k' Clio 1.1 before it coughed and then ran out as I glided into a layby on the A17 ;D (can of petrol at the ready ;))
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If 35l enough to month or more waiting the low fuel light not best decision , best you can do if there no fuel shortage fill up after 2 or 3 bars disappear.
I filled up tank already several times after 2 bars go off (this is ~10l of gasoline each fill up in my case) and get better fuel economy, before that I seen mpg drop after reaching 1/2 tank and below on every tank full to empty.
By the way I seen that PHEV and EV with range extender asking to add fresh fuel after 90 days or car itself goes in hybrid mode to burn fuel before it will by old.
https://bestride.com/news/technology/plug-in-hybrids-and-range-extended-evs-need-to-keep-your-fuel-fresh-heres-how-they-do-it (https://bestride.com/news/technology/plug-in-hybrids-and-range-extended-evs-need-to-keep-your-fuel-fresh-heres-how-they-do-it)
But maybe I have bad 95 RON gasoline in my country and someone in Europe or United Kingdom will no see any difference….
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If 35l enough to month or more waiting the low fuel light not best decision , best you can do if there no fuel shortage fill up after 2 or 3 bars disappear.
I filled up tank already several times after 2 bars go off (this is ~10l of gasoline each fill up in my case) and get better fuel economy, before that I seen mpg drop after reaching 1/2 tank and below on every tank full to empty.
By the way I seen that PHEV and EV with range extender asking to add fresh fuel after 90 days or car itself goes in hybrid mode to burn fuel before it will by old.
https://bestride.com/news/technology/plug-in-hybrids-and-range-extended-evs-need-to-keep-your-fuel-fresh-heres-how-they-do-it (https://bestride.com/news/technology/plug-in-hybrids-and-range-extended-evs-need-to-keep-your-fuel-fresh-heres-how-they-do-it)
But maybe I have bad 95 RON gasoline in my country and someone in Europe or United Kingdom will no see any difference….
Strange that you are getting better fuel economy frequently topping up to a full tank, than when its often half full or less. Should be the other way round because the car is a few Kilogrammes heavier. Maybe your local petrol is boosted to 95 Ron with additives that are so volatile the improvement evaporates very quickly when the fuel gets sloshed around in a half full tank.
Interesting about petrol going stale in Plug- in hybrids where some drivers may not need to use any petrol at all from their tank for a year or more. I have read that E10 goes stale a bit more quickly than 100% petrol.
Although The problem is less likely with self charging hybrids there must be some drivers who will be doing such a small annual mileage they may still have the same petrol in the tank for months. ( Especially those who may fill up in late summer, only do a few miles a month, hibernate or go off somewhere warm for the winter, and still have 3/4 of a tank left to last them right through spring ) These may also need to ensure the car gets run to keep the HV battery charged.
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I'm not convinced that continually topping up a few litres at a time is making any real difference.
It's probably just fooling the fibometer into reporting higher mpg. The only true way is to calculate by brimming, or to the pump nozzle 'click', and doing the maths.
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If 35l enough to month or more waiting the low fuel light not best decision , best you can do if there no fuel shortage fill up after 2 or 3 bars disappear.
I filled up tank already several times after 2 bars go off (this is ~10l of gasoline each fill up in my case) and get better fuel economy, before that I seen mpg drop after reaching 1/2 tank and below on every tank full to empty.
By the way I seen that PHEV and EV with range extender asking to add fresh fuel after 90 days or car itself goes in hybrid mode to burn fuel before it will by old.
https://bestride.com/news/technology/plug-in-hybrids-and-range-extended-evs-need-to-keep-your-fuel-fresh-heres-how-they-do-it (https://bestride.com/news/technology/plug-in-hybrids-and-range-extended-evs-need-to-keep-your-fuel-fresh-heres-how-they-do-it)
But maybe I have bad 95 RON gasoline in my country and someone in Europe or United Kingdom will no see any difference….
Strange that you are getting better fuel economy frequently topping up to a full tank, than when its often half full or less. Should be the other way round because the car is a few Kilogrammes heavier. Maybe your local petrol is boosted to 95 Ron with additives that are so volatile the improvement evaporates very quickly when the fuel gets sloshed around in a half full tank.
Interesting about petrol going stale in Plug- in hybrids where some drivers may not need to use any petrol at all from their tank for a year or more. I have read that E10 goes stale a bit more quickly than 100% petrol.
Although The problem is less likely with self charging hybrids there must be some drivers who will be doing such a small annual mileage they may still have the same petrol in the tank for months. ( Especially those who may fill up in late summer, only do a few miles a month, hibernate or go off somewhere warm for the winter, and still have 3/4 of a tank left to last them right through spring ) These may also need to ensure the car gets run to keep the HV battery charged.
Interesting points. On the issue around PHEVs we have a near neighbour with a BMW 3 series PHEV. He went six months without adding fuel and he only needed to add fuel after a lengthy road trip. He bought a PHEV so that he could do occasional long trips without the usual hassle around charging. Almost all his motoring is in EV mode.
I think the manual does suggest doing a 30 minute run in the Mk4 Jazz if not used often for the benefit of the hybrid battery.
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I'm not convinced that continually topping up a few litres at a time is making any real difference.
I am convinced!!! It really makes a difference! But logically thinking unfortunately a negative difference...
I don't know how it is with you all here, but normally I drive a few hundred meters, sometimes even a few kilometres extra to get to a petrol station. This causes burning some extra fuel. The more often one would do that the more (unnecessary) fuel one would burn.
I refuel our Jazz roughly every 650 - 800 km. (400 - 500 mi) and Roman suggests to refuel at least 3 to 4 times more often... How many extra (unnecessary) km./mi would one make over the years?
Next to that: 1 liter of petrol weighs about 750 grams. If you never empty your tank beyond, say, about 30 liters left, you are always driving with a minimum of 22 kg. petrol "ballast" around. And as we all know: extra weight means extra consumption...
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I'm not convinced that continually topping up a few litres at a time is making any real difference.
I am convinced!!! It really makes a difference! But logically thinking unfortunately a negative difference...
I don't know how it is with you all here, but normally I drive a few hundred meters, sometimes even a few kilometres extra to get to a petrol station. This causes burning some extra fuel. The more often one would do that the more (unnecessary) fuel one would burn.
I refuel our Jazz roughly every 650 - 800 km. (400 - 500 mi) and Roman suggests to refuel at least 3 to 4 times more often... How many extra (unnecessary) km./mi would one make over the years?
Next to that: 1 liter of petrol weighs about 750 grams. If you never empty your tank beyond, say, about 30 liters left, you are always driving with a minimum of 22 kg. gasoline "ballast" around. And as we all know: extra weight means extra consumption...
I write this from my expiriense with my local gasoline and tank of 35 liters that last 45-50 days to empty, add to this story hot climate and possibility to get realy bad gasoline in first place.
If you not want to drove arround full fuel tankl go ahead and fill only 5 liters after low fuel apears, do this round year !!!
Tell to everyone afterward if you get better fuel economy then i have.
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I'm not convinced that continually topping up a few litres at a time is making any real difference.
It's probably just fooling the fibometer into reporting higher mpg. The only true way is to calculate by brimming, or to the pump nozzle 'click', and doing the maths.
I drived 327 kilometers to get 2 bars of fuel meter go off then fill up to full tank (i let the fuel pump on gas station to stop automaticaly) - managed to fill up 10.8L.
Afterward i fill up after 335km and get 11.1L but this time i added to 3/4 of tank "95" RON gasoline with 98 RON, managed to get from this tank 930.7km and computer still judge that on remaining gasoline i can go another 150km
But that was in end of month and i heard about fuel price jump so filled up - get this time 30.7l to full tank (trip A 930.7KM)
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If 35l enough to month or more waiting the low fuel light not best decision , best you can do if there no fuel shortage fill up after 2 or 3 bars disappear.
I filled up tank already several times after 2 bars go off (this is ~10l of gasoline each fill up in my case) and get better fuel economy, before that I seen mpg drop after reaching 1/2 tank and below on every tank full to empty.
By the way I seen that PHEV and EV with range extender asking to add fresh fuel after 90 days or car itself goes in hybrid mode to burn fuel before it will by old.
https://bestride.com/news/technology/plug-in-hybrids-and-range-extended-evs-need-to-keep-your-fuel-fresh-heres-how-they-do-it (https://bestride.com/news/technology/plug-in-hybrids-and-range-extended-evs-need-to-keep-your-fuel-fresh-heres-how-they-do-it)
But maybe I have bad 95 RON gasoline in my country and someone in Europe or United Kingdom will no see any difference….
Strange that you are getting better fuel economy frequently topping up to a full tank, than when its often half full or less. Should be the other way round because the car is a few Kilogrammes heavier. Maybe your local petrol is boosted to 95 Ron with additives that are so volatile the improvement evaporates very quickly when the fuel gets sloshed around in a half full tank.
Interesting about petrol going stale in Plug- in hybrids where some drivers may not need to use any petrol at all from their tank for a year or more. I have read that E10 goes stale a bit more quickly than 100% petrol.
Although The problem is less likely with self charging hybrids there must be some drivers who will be doing such a small annual mileage they may still have the same petrol in the tank for months. ( Especially those who may fill up in late summer, only do a few miles a month, hibernate or go off somewhere warm for the winter, and still have 3/4 of a tank left to last them right through spring ) These may also need to ensure the car gets run to keep the HV battery charged.
MTBE up to 15% more by 14% then by BP
aromatics up to 35% more by 15% then by BP
olefines up to 18% this crap prohibited in most countries because it causes smog. not used by BP
added according to Bazan group https://www.bazan.co.il/Media/Uploads/B024.pdf (https://www.bazan.co.il/Media/Uploads/B024.pdf) sorry i can't find english pdf version.
BP uses up to 20% of toluene (aromatics) and up to 1 % of ETBE so gasoline rectification on BP sites is much better i think
https://www.bp.com/content/dam/bp/country-sites/en_au/australia/home/products-services/data-sheets/premium-unleaded-95.pdf (https://www.bp.com/content/dam/bp/country-sites/en_au/australia/home/products-services/data-sheets/premium-unleaded-95.pdf)
there is E10 pdf https://www.bp.com/content/dam/bp/country-sites/en_au/australia/home/products-services/data-sheets/regular-unleaded-petrol-with-ethanol.pdf (https://www.bp.com/content/dam/bp/country-sites/en_au/australia/home/products-services/data-sheets/regular-unleaded-petrol-with-ethanol.pdf)
But drivers that delivering fuel often do bad thing - they can on the way to gas station drain part of the gasoline and so that the number of liters is equal to received for delivery, they adding to gasoline used engine oil, acetone or alcohol, what kind of gasoline gets to the gas station nobody knows except these swindlers, our organization responsible for fuel quality regularly carry out checks and find low quality gasoline at gas stations - after checking at least half a year, the gasoline there is normal.
In the south of Israel, on the way to Eilat, there are several gas stations in Arab cities, there such "high-quality gasoline" is constantly poured and checks, although they reveal violations, nothing changes.
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If 35l enough to month or more waiting the low fuel light not best decision , best you can do if there no fuel shortage fill up after 2 or 3 bars disappear.
I filled up tank already several times after 2 bars go off (this is ~10l of gasoline each fill up in my case) and get better fuel economy, before that I seen mpg drop after reaching 1/2 tank and below on every tank full to empty.
By the way I seen that PHEV and EV with range extender asking to add fresh fuel after 90 days or car itself goes in hybrid mode to burn fuel before it will by old.
https://bestride.com/news/technology/plug-in-hybrids-and-range-extended-evs-need-to-keep-your-fuel-fresh-heres-how-they-do-it (https://bestride.com/news/technology/plug-in-hybrids-and-range-extended-evs-need-to-keep-your-fuel-fresh-heres-how-they-do-it)
But maybe I have bad 95 RON gasoline in my country and someone in Europe or United Kingdom will no see any difference….
Strange that you are getting better fuel economy frequently topping up to a full tank, than when its often half full or less. Should be the other way round because the car is a few Kilogrammes heavier. Maybe your local petrol is boosted to 95 Ron with additives that are so volatile the improvement evaporates very quickly when the fuel gets sloshed around in a half full tank.
Interesting about petrol going stale in Plug- in hybrids where some drivers may not need to use any petrol at all from their tank for a year or more. I have read that E10 goes stale a bit more quickly than 100% petrol.
Although The problem is less likely with self charging hybrids there must be some drivers who will be doing such a small annual mileage they may still have the same petrol in the tank for months. ( Especially those who may fill up in late summer, only do a few miles a month, hibernate or go off somewhere warm for the winter, and still have 3/4 of a tank left to last them right through spring ) These may also need to ensure the car gets run to keep the HV battery charged.
Interesting points. On the issue around PHEVs we have a near neighbour with a BMW 3 series PHEV. He went six months without adding fuel and he only needed to add fuel after a lengthy road trip. He bought a PHEV so that he could do occasional long trips without the usual hassle around charging. Almost all his motoring is in EV mode.
I think the manual does suggest doing a 30 minute run in the Mk4 Jazz if not used often for the benefit of the hybrid battery.
This recomendation surely to charge battery but small 12v one, i have voltmeter with 12v socket fitted and when i start car i see 14.7v on voltmeter but after driving for ~20-30 minutes without huge load on 12v battery i can see that voltage drops to 12.7v (yes our dc-dc charger not topping up 12v battery constantly).
To top up HV battery to 95% enough to run engine for 5-6 minutes by pressing accelerator pedal when car is stationary in Parking (P).
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I think the manual does suggest doing a 30 minute run in the Mk4 Jazz if not used often for the benefit of the hybrid battery.
This recomendation surely to charge battery but small 12v one, i have voltmeter with 12v socket fitted and when i start car i see 14.7v on voltmeter but after driving for ~20-30 minutes without huge load on 12v battery i can see that voltage drops to 12.7v (yes our dc-dc charger not topping up 12v battery constantly).
To top up HV battery to 95% enough to run engine for 5-6 minutes by pressing accelerator pedal when car is stationary in Parking (P).
No, it specifically mentions it is for the benefit of the HV battery.
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What I find odd is that on the 2 occasions I've used a CTEK to fully charge the 12V battery after not using the car for a couple of weeks, on next powering up the battery segments go right up to max then tail off during driving back to the normal 3 to 6 variable segments.
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I'm not convinced that continually topping up a few litres at a time is making any real difference.
It's probably just fooling the fibometer into reporting higher mpg. The only true way is to calculate by brimming, or to the pump nozzle 'click', and doing the maths.
I drived 327 kilometers to get 2 bars of fuel meter go off then fill up to full tank (i let the fuel pump on gas station to stop automaticaly) - managed to fill up 10.8L.
Afterward i fill up after 335km and get 11.1L but this time i added to 3/4 of tank "95" RON gasoline with 98 RON, managed to get from this tank 930.7km and computer still judge that on remaining gasoline i can go another 150km
But that was in end of month and i heard about fuel price jump so filled up - get this time 30.7l to full tank (trip A 930.7KM)
I dont think filling to the first click auto stop on the pump is consistent enough between pumps for precise comparisons on small quantities over a short period. With a fast pump the filler neck on the car may fill up with fuel faster than it can drain down into the tank. Especially when its almost full . The pump detects this backlog of fuel in the filler pipe as a full tank and clicks off early. After a few seconds maybe half a litre or more of this trapped fuel will have drained down into the tank. With a slower pump there is no such backlog and you can fill up with that much more fuel. Seems like you have used more for the same distance, but you haven't really.
The only way to do it accurately is to brim the tank until fuel is literally visible in the filler neck. But this is not very safe, especially in a hot climate where the petrol may expand.
Sound like your local petrol is using some dubious additives. Even before it is adulterated further by criminals.
If there is a risk of a very bad batch of petrol it makes more sense to buy little and often. If you add 10 litres of bad petrol to 30 litres of 'good' petrol you may never know. Add 30 litres of bad to 10 litres of good and you'll know all about it. :o
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I agree, which is why after the first click I let it 'fizz' down for a few seconds, before the pump cuts out through inactivity, and then drizzling in to get a second click.
I just didn't want to make it sound more complicated :)
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What I find odd is that on the 2 occasions I've used a CTEK to fully charge the 12V battery after not using the car for a couple of weeks, on next powering up the battery segments go right up to max then tail off during driving back to the normal 3 to 6 variable segments.
This mentioned in user manual on page 138
When car used for 30 minutes HV battery will by cycled many times from 29% to 70% or less depends on conditions but at the end of this drive cycle HV battery will be the same ~30-40% SOC (so mayby not charge level concern but balancing liion pack because if pack unbalanced pack will stop working with hybrid system check error on dashboard) - liIon battery have very low self discharge rate and when car not used almost not discharges.
Another story if for some reasone when car in ready state driver moving from Drive (D) to Neutral (N) in this case ICE engine will stop charging HV battery and HV battery may by discharged by car loads such as A/C (directly uses HV DC) seat heaters and rear window heater (powered throught DC-DC converter that suply charge to 12v system) below the point when car can start ICE to recharge HV battery.
Loock on Toyota recommendation for hybrids (but they mention both batteryes just because many their hybrids uses HV NiMh packs this ones have huge self discharge rate in comparison with LiIon packs -
https://mag.toyota.co.uk/coronavirus-toyota-hybrid-car-maintenance/ (https://mag.toyota.co.uk/coronavirus-toyota-hybrid-car-maintenance/)
They simple asked to turn on car to ready state for 60 minutes.
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I'm not convinced that continually topping up a few litres at a time is making any real difference.
It's probably just fooling the fibometer into reporting higher mpg. The only true way is to calculate by brimming, or to the pump nozzle 'click', and doing the maths.
I drived 327 kilometers to get 2 bars of fuel meter go off then fill up to full tank (i let the fuel pump on gas station to stop automaticaly) - managed to fill up 10.8L.
Afterward i fill up after 335km and get 11.1L but this time i added to 3/4 of tank "95" RON gasoline with 98 RON, managed to get from this tank 930.7km and computer still judge that on remaining gasoline i can go another 150km
But that was in end of month and i heard about fuel price jump so filled up - get this time 30.7l to full tank (trip A 930.7KM)
I dont think filling to the first click auto stop on the pump is consistent enough between pumps for precise comparisons on small quantities over a short period. With a fast pump the filler neck on the car may fill up with fuel faster than it can drain down into the tank. Especially when its almost full . The pump detects this backlog of fuel in the filler pipe as a full tank and clicks off early. After a few seconds maybe half a litre or more of this trapped fuel will have drained down into the tank. With a slower pump there is no such backlog and you can fill up with that much more fuel. Seems like you have used more for the same distance, but you haven't really.
The only way to do it accurately is to brim the tank until fuel is literally visible in the filler neck. But this is not very safe, especially in a hot climate where the petrol may expand.
Sound like your local petrol is using some dubious additives. Even before it is adulterated further by criminals.
If there is a risk of a very bad batch of petrol it makes more sense to buy little and often. If you add 10 litres of bad petrol to 30 litres of 'good' petrol you may never know. Add 30 litres of bad to 10 litres of good and you'll know all about it. :o
Sorry but this kind of game with new car and plastik fuel tank is dangerus !!!!
All fuel tanks desigened this way that they have space for expanding fuel, if i brimm to the cap i risk damage fuel tank and charcoal canister, this will cost me too much.
I get twice almost identical ammount of fuel when refueled with almost full tank and i used same pump on same gas station.
This enough for me
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If you use the first click stop for safety but measure consumption over several fill ups then any potential errors will be minimised. The more fill ups you use for the calculation then the more accurate will be the mpg.
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Just found Fuel recommendation on engines.honda.com
https://engines.honda.com/support-and-service/fuel-recommendations#gas (https://engines.honda.com/support-and-service/fuel-recommendations#gas)
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Today I travelled about 6 miles after the miles remaining hit zero before putting 37.66 litres into the tank. The low fuel warning came on with about 30 miles of journey remaining and mental arithmetic indicated that 5 litres of fuel (the handbook says approx 5.3 litres remaining when the low fuel warning came on) should be good for at least 50 miles. And that's roughly how it worked out.
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Just found Fuel recommendation on engines.honda.com
https://engines.honda.com/support-and-service/fuel-recommendations#gas (https://engines.honda.com/support-and-service/fuel-recommendations#gas)
Those are for small (lawnmower type) engines, but many points are still relevant.