Clubjazz - Honda Jazz & HR-V Forums

Honda Jazz Forums => Honda Jazz Mk4 2020 - => Topic started by: Mr Snazzy Jazz on May 14, 2023, 09:23:00 PM

Title: Econ Mode
Post by: Mr Snazzy Jazz on May 14, 2023, 09:23:00 PM
Has anyone used the ‘econ’ button for any length of time? If so is it worth using?
Cheers!
Title: Re: Econ Mode
Post by: shufty on May 14, 2023, 09:27:34 PM
... For me it stunts the power and the aircon too much. Also fuel economy was worse.
So no I definitely don't use it.
Title: Re: Econ Mode
Post by: Kenneve on May 14, 2023, 10:32:36 PM
... For me it stunts the power and the aircon too much. Also fuel economy was worse.
So no I definitely don't use it.

Totally agree!
Title: Re: Econ Mode
Post by: Kremmen on May 15, 2023, 03:28:27 AM
Also agree, did just the same on my 3 previous Civics, totally kills Aircon to the point that the car gets hotter when you're driving under full sun.

And, as posted, it kills throttle response.
Title: Re: Econ Mode
Post by: Marco1979 on May 15, 2023, 06:24:41 AM
I have pressed Econ after purchase and have been driving like that ever since. I hardly use the airconditioning so I do not notice much difference. Moreover, the car just goes when pressing the accelerator (just a bit further down, that’s all).
So far 68 mpg or 4.1 l/100km and still improving  :)
Title: Re: Econ Mode
Post by: rightasrain on May 15, 2023, 07:14:31 AM
The same as Marco but 3.85l/100km.
Title: Re: Econ Mode
Post by: FMIB on May 15, 2023, 07:15:49 AM
I don't use eco mode on any car for the various reasons already mentioned. However, in several of my cars, on long runs when testing, I have achieved the same mpg in normal, eco and sport modes.

Yesterday on the motorway on a level surface, fixed speed and fixed throttle, when pressing the eco button the instant fuel economy bar moved from just under 70 to just over 70. I repeated several times and each time I saw the same effect.
So clearly under those conditions, there was a benefit.
Switched back to normal mode as the improved throttle response and full aircon is worth more to me than a few more mpg
Title: Re: Econ Mode
Post by: Kremmen on May 15, 2023, 07:40:12 AM
Each to their own again.

I had a day where my car sat outside for a few hours in the sun and it got very hot inside. When I started up, the Aircon on auto did pump out icy cold air on a high fan speed but the fan speed soon reduced to quite low and when I felt the air coming from the centre vents it was only slightly cold.

As soon as I turned off Eco the fan speed instantly rose and the air was icy cold again. I'd selected 20C but it gave up at about 26C. Eco off and it continued to cool down to about 22C. I have an inside digital thermo.

On the throttle, I was on a rising motorway slip road and I could see a gap to pull in to if I accelerated to match the traffic speed. I pressed the throttle and got very little response. Again, turned off Eco and the the speed picked up as required and I did manage to slot in.

This isn't a Mk4 Jazz thing but something I've tested on 2 8G Civics and 1 9G Civic and the same on all.

Very similar posts on the Civic forum re Eco/AC/Throttle/MPG

If it works for you then go for it :)
Title: Re: Econ Mode
Post by: Nicksey on May 15, 2023, 08:31:06 AM
No, not on this current Jazz nor on my previous cars fitted with one. It really didn't make any noticeable improvement on MPG, and what is the point of air con/climate control if all you're going to do is dampen the effect.
Title: Re: Econ Mode
Post by: Lord Voltermore on May 15, 2023, 09:09:12 AM
I dont use econ mode as it stunts throttle  response.    A driver who is careful with the throttle can achieve just as much fuel saving or even better without econ mode.
 With aircon I use my discretion and sometimes switch it off completely myself. IMO thats more eco friendly than its always  running, sometime at an inadequate output, whether its really  needed or not .   

  Sorry but I think drivers who always  use econ mode have got used to a lower standard of throttle response and regard it as adequate and normal for the car.  Whether its adequate is a personal choice. But it can be better. 
Title: Re: Econ Mode
Post by: Jazzik on May 15, 2023, 09:56:21 AM
Sorry but I think drivers who always  use econ mode have got used to a lower standard of throttle response and regard it as adequate and normal for the car.  Whether its adequate is a personal choice. But it can be better.

I always use econ mode and and indeed: I regard the  throttle response as adequate and normal for the car. And as for acceleration on a (short) slip road or fast overtaking maneuver: pedal to the metal and you are really exactly the same fast as the Jazz next to you without econ.
Parking in full sun  on a hot day? No problem: before starting open all the windows or (even more effective) if possible doors and tailgate for a few minutes. Our aircon always managed (in our climate) to achieve a comfortable temperature. I don't know how that will be in the future with global warming...
Title: Re: Econ Mode
Post by: rightasrain on May 15, 2023, 10:20:55 AM
Sorry but I think drivers who always  use econ mode have got used to a lower standard of throttle response and regard it as adequate and normal for the car.  Whether its adequate is a personal choice. But it can be better.

I always use econ mode and and indeed: I regard the  throttle response as adequate and normal for the car. And as for acceleration on a (short) slip road or fast overtaking maneuver: pedal to the metal and you are really exactly the same fast as the Jazz next to you without econ.
Parking in full sun  on a hot day? No problem: before starting open all the windows or (even more effective) if possible doors and tailgate for a few minutes. Our aircon always managed (in our climate) to achieve a comfortable temperature. I don't know how that will be in the future with global warming...

Totally agree!
Every single word.
Title: Re: Econ Mode
Post by: SouthernExile on May 15, 2023, 10:54:02 AM
Right or wrong, I have Econ mode on all the time, whether through a sense of reluctance to pay more for fuel or burnishing my green credentials, I'm not sure. But I think that so far as fuel consumption goes, much more difference is made by how you use the accelerator and by external circumstances.

This morning I made a return journey from Darlington to Barnard Castle, 15 miles each way. Weather warm and sunny (by northern England standards). On the outwward journey. somewhat uphill and pursued by a white van, I went at mostly 60 where allowed, hurrying generally, and achieved a mere 58.5mpg. Coming back, little traffic, more downhill, mostly going at 50mph or less, I achieved 97.8mpg.

Whilst a conventional petrol car would have shown some difference between the two journeys, I think that fuel consumption is much more variable in the Jazz and I'm not sure Econ has much to do with it.
Title: Re: Econ Mode
Post by: Lord Voltermore on May 15, 2023, 11:00:05 AM
Sorry guys we'll have to agree to differ. Like I say ,personal choice. 

I cannot dispute that  'pedal to the metal'  Econ mode may give the same ultimate performance and acceleration.   Its the reduced  responsiveness and liveliness of the car when using more subtle and delicate  throttle control   that is not to my taste.  If that was as good as it gets then I would accept it as   adequate, but not when I know the car can do better.   

I cant comment on the effectiveness of aircon in econ mode as the throttle response put me off using it for long enough to find out.  And yes this also means I maybe  havnt used it enough to know for sure   it wouldnt improve my mpg slightly in some circumstances.   :-[   But I get very good mpg without it, similar to the eco mode regulars.   
Title: Re: Econ Mode
Post by: Jazzik on May 15, 2023, 12:18:36 PM
I cant comment on the effectiveness of aircon in econ mode

..../....
Parking in full sun  on a hot day? No problem: before starting open all the windows or (even more effective) if possible doors and tailgate for a few minutes. Our aircon always managed (in our climate) to achieve a comfortable temperature. I don't know how that will be in the future with global warming...

Totally agree!
Every single word.

Wait.... rightasrain lives in Italy...? Average temperatures (https://em-content.zobj.net/thumbs/120/sony/336/thermometer_1f321-fe0f.png)(slightly :D) higher than where most of us live...?
Title: Re: Econ Mode
Post by: John Ratsey on May 15, 2023, 12:20:34 PM
One effect of Econ not so far mentioned is that it reduces the amount of time the engine is running in cold weather solely to provide cabin heating by allowing an increased difference between target and actual temperature. For town driving in winter I rely on the heated seats and only turn on the heater if demisting is needed.
Title: Re: Econ Mode
Post by: peteo48 on May 15, 2023, 12:23:27 PM
I have it on all the time but most my driving is urban/suburban. It's very rare I am exceeding 50 mph.

That said I often wonder if it might actually harm mpg in some circumstances. If the lack of throttle response causes frustration, might you over compensate and increase the throttle input more than usual?

I have had it on for so long now I've forgotten what it was like without it. In view of the replies above I'm almost tempted to turn it off and see what happens over, say, a 3 month period.
Title: Re: Econ Mode
Post by: JJazz on May 15, 2023, 12:54:15 PM
Couldn’t get above 54 mpg with ECON on so I switched it off and it’s gone up slowly. Seems ECON is useless.
Title: Re: Econ Mode
Post by: Marco1979 on May 15, 2023, 12:59:32 PM
I like a very 'lazy' throttle response, so to say. It it easier to delicately drive and anticipate optimally, IMO.

Also, a few months ago, I experienced the absolute opposite: I did an anti slip and skid training and 'had to' drive a Mercedes A. I thought they had provided an AMG version; you were unable to gently accelerate, it would immediately go to 3,000 or 4,000 revs and accelerate brutally. It turned out to be a A180 (the Renault 1.3 engine), performance went from 0 to 100% on the first 20% of the throttle, and more throttle would not make any difference at all. Very annoying, but also unsafe!
Maybe that's why some people drive like their hair is on fire... they cannot drive their car any other way.
Title: Re: Econ Mode
Post by: Jeff15 on May 15, 2023, 01:49:26 PM
Econ mode.? It makes no difference to fuel economy .. :-X
Title: Re: Econ Mode
Post by: Jazzist on May 15, 2023, 02:07:05 PM
I have never had a car that accelerated as quickly and drove as economically as this Jazz. It's my 25th car. So I am very satisfied with it and can keep up with any traffic and with economical consumption figures with the Econ mode.
Title: Re: Econ Mode
Post by: Jazzik on May 15, 2023, 03:59:02 PM
Couldn’t get above 54 mpg with ECON on so I switched it off and it’s gone up slowly. Seems ECON is useless.

I'm very curious about the logic of this. Anyone who has a technical explanation for higher consumption when less energy is used for the climate system and the response to the accelerator pedal is reduced?
(https://www.cheesebuerger.de/images/midi/konfus/a018.gif)
Or maybe a logical explanation for the opposite is simpler: lower consumption when more energy is used for the climate system and the response to the accelerator pedal is increased?
(https://www.cheesebuerger.de/images/midi/konfus/a014.gif)
Title: Re: Econ Mode
Post by: IanG on May 15, 2023, 04:12:23 PM
I tend to switch off econ, as haven’t experienced increased economy with it enabled but switch it on during wintry conditions, as find the decreased throttle response helps prevent wheel spin in slippery conditions, much like the winter mode button on Golf GT TSI.
Title: Re: Econ Mode
Post by: shufty on May 15, 2023, 06:03:07 PM
...I bought my car to enjoy it not to eek out every last bit of mpg.
Title: Re: Econ Mode
Post by: Lord Voltermore on May 16, 2023, 09:50:47 AM

I'm very curious about the logic of this. Anyone who has a technical explanation for higher consumption when less energy is used for the climate system and the response to the accelerator pedal is reduced?

Not a technical explanation  but  when I am delicately using the throttle manually the car feels more responsive and  operating at its optimum efficiency. And therefore uses the smallest possible amount of fuel at that moment .   The suppressed throttle control in Econ mode  may be less precise and less efficient.   

This is assuming the driver really is using the most efficient throttle control.  For those who have difficulty with  very delicate throttle control, or dont realise they are not doing it well enough , or dont care anyway  may benefit the most from econ  mode dampening their excesses. 
I am not saying that those who prefer Econ mode throttle response  are lacking in throttle  skill  or self restraint.

Aircon uses quite a lot of energy, econ mode saves you the effort of reducing its use yourself. 

 Why dont you see gazelles wearing pyjamas?   It takes more energy sprinting away from lions.   ;D
Title: Re: Econ Mode
Post by: Jazzik on May 16, 2023, 11:48:36 AM
But now let's assume that the driver is really using the most efficient throttle control, but in Econ mode? (https://www.cheesebuerger.de/images/smilie/konfus/a015.gif)

Okay, let's just leave it at that. Honda added a (crappy?) Econ mode to supposedly save fuel.
Manual page 405:
The ECON button turns the ECON mode on and off.
The ECON mode helps you improve your fuel economy by adjusting the
performance of the climate control system and accelerator pedal response.


Some of us believe in it and use it consistently. There are also non-believers who even believe that it has the opposite effect (?) and therefore do not use it.
Fortunately, we are free to choose.

PS Why are zebras wearing pyamas?  ;D
Title: Re: Econ Mode
Post by: njf16154 on May 18, 2023, 11:44:25 AM
I've been using the Eco mode for the past two years and never really thought about turning it off, as I was happy with the fuel economy and responsiveness. Having read this thread, I decided to turn it off to see if it made much difference. I've just completed a couple of 100 mile journeys. One predominantly on fast A roads and motorways and the other on quieter slower A and B roads. As expected fuel economy was better on the quieter roads (70mpg vs just over 60mpg), but to be quite honest fuel consumption was more or less the same the same as when I'd made the same journeys in Eco mode a few weeks ago. I can't say that I noticed any great change in responsiveness; maybe a slightly faster throttle response, but not dramatic. I'll keep it switched off for a while to see if there is much difference. I guess the heating/cooling hasn't been required much on either journey as it hasn't been particularly cold or hot, so that may make some difference over time.
Title: Re: Econ Mode
Post by: peteo48 on May 18, 2023, 12:38:31 PM
Reading through these responses I am coming more and more round to the view that the main benefit to Econ is in its suppression of Air Con and heating rather than muting the throttle response.
Title: Re: Econ Mode
Post by: Kremmen on May 18, 2023, 01:08:40 PM
It depends if you call it a benefit.

I remember one journey from Malvern to Northolt. In Malvern the car was parked in the shade so not overly hot inside. The outside temp was about 26C and sunny.
Driving down the M40 the car was under full sun and even with the auto Aircon set to 20C the interior refused to budge from uncomfortably hot under the sun because the fan was just at a trickle.
I then turned Econ off and immediately the fan speed shot up and the interior started cooling.

This was evident on all my 8G and 9G Civics and the Jazz has demonstrated the same behaviour.

I've tried Econ a few times on each car and it's failed my testing so I don't use it any more.

But, like every other adjustable feature, if it works for you ........
Title: Re: Econ Mode
Post by: Jazzfan49 on May 18, 2023, 10:11:33 PM
I find that eco mode dulls the throttle response but I use it most of the time, with eco mode off its far more responsive but it’s nice to drive in either mode plus it’s no big issue to switch modes for fast take offs and hilly roads, I drove over 200 miles last week all over the Cotswolds and Derbyshire peaks in eco mode with no problem and 3 heavyweights on board, still recording over 65mpg with A/C on, temperature around 20 deg c and the cabin was very comfortable with plenty of cool air flow to keep us happy.  ;D ;D
Title: Re: Econ Mode
Post by: Hicardo on July 07, 2023, 10:41:12 PM
Horses for courses. I'm an Econ mode user primarily because I like the green leaf on the dash. Makes me feel happy  8)
Title: Re: Econ Mode
Post by: Kremmen on July 08, 2023, 03:38:38 AM
It's interesting that the aircon under Econ works for some.

Mine was parked in the hot sun for a while and the interior was over 50C. Powered up, dial set to 21.5C, and the aircon briefly kicked in and got the temp down to about 30C then went into limp mode, fan speed 1.

Turned Econ off and immediately the fan speed went up and started cooling again. As a test, during the drive, I turned Econ back on and the fan speed dropped to 1 again and the interior started getting hotter under the full sun.

This scenario has been the same on 3 Civics and now the Jazz.

Regarding the throttle, I was on a motorway joining slip road, saw a gap to accelerate into, pressed the throttle, nothing. Turned off Econ, got throttle response back and was able to easily accelerate into the gap.

Econ, nope, not for me.
Title: Re: Econ Mode
Post by: Jazzist on July 08, 2023, 11:22:08 AM
Strange, it seems that you have a completely different Jazz. I do not experience any limitation in Econ mode. Last month 2833 km driven to Italy and Austria and a consumption of 4.1 liters per 100 km realized driving over mountain passes and the German Autobahnen.
Title: Re: Econ Mode
Post by: Lord Voltermore on July 08, 2023, 12:28:27 PM
I find the throttle response noticeably suppressed in econ mode.    You have to press the pedal that little bit harder and wait a fraction of a second longer for power to be delivered.  You do (eventually) get the same total power delivered so it doesnt affect hill climbing ability etc. 

Throttle response is still good in Econ mode. If you always use econ mode  you may get used to the car responding in this way and happy to regard it as normal.  Some drivers may prefer it that way.
Title: Re: Econ Mode
Post by: Marmoset on July 08, 2023, 12:42:51 PM
From the outset I kept it in Econ mode but recently decided to try not using it.  I've not noticed any reduction in mpg economy, in fact I've been getting a little better fuel economy.  But as it's now warmer I'd expect that anyway.

I do find that the more responsive accelerator with econ off encourages a lighter foot style of driving.
Title: Re: Econ Mode
Post by: Jazzik on July 08, 2023, 12:45:45 PM
Regarding the throttle, I was on a motorway joining slip road, saw a gap to accelerate into, pressed the throttle, nothing. Turned off Econ, got throttle response back and was able to easily accelerate into the gap.

Econ, nope, not for me.

Strange... Econ on (I thought you never use Econ?)... you saw a gap to accelerate into, pressed the throttle and... nothing... Really? Nothing? But then you had time to turn off Econ and then... you could easily accelerate into the gap.

How does our Jazz react to the throttle in such a situation, Econ on or off?
Then it's "pedal to the metal" (we ignore the mat ;)) so real kickdown! It immediately goes like crazy. I've never noticed any difference between Econ "on" or "off".
Besides, at such a moment I really don't have time to check if Econ is on or off and fiddle with the button.

And as for the aircon: it does indeed work less effectively with Econ on. However... I never immediately get in the car when it has been parked in the full sun on a hot day and the interior is about 50°C.
I open all the windows from a distance with the key fob (and we stay in the shadows if possible). Then arrived at the car open all the doors and also the tailgate. Let it blow through for a few minutes. Then with everything open, start the car with the aircon on, to blow the hot air out of the system. Driving away with the air conditioning set about 5°C lower than the outside temperature.
When it is really hot, above 30°C (like now here) I switch off Econ and then the air conditioning does indeed work more effectively.

Title: Re: Econ Mode
Post by: peteo48 on July 10, 2023, 12:49:10 PM
Having followed this tread for a bit and being an ECON user I decided to turn it off this morning. It's like having a new car! The responsiveness is noticeably sharper. Might be leaving it off permanently now.
Title: Re: Econ Mode
Post by: Whiteshark on July 10, 2023, 01:23:06 PM
Completely agree with Pete. Having always used econ, and following comments on here, I switched it off, wow  different car. Much nicer to drive, with no noticeable difference in economy.
Title: Re: Econ Mode
Post by: Kremmen on July 10, 2023, 02:02:47 PM
If you've used Econ consistently then you will get used to it.

The few times I've tested it, over 4 Honda's now, I also noticed how it dulls the throttle. My sliproad experience was pressing the throttle just hard enough to speed up and blend in based on my knowledge of the throttle. Having been used to Econ off I knew how hard to press and with that same level I hardly accelerated.

Your next mission, should you decide to accept it, is to climb into a hot car, say 40C to 50C+ Econ on, windows shut, and with a temp set to 21ish. After a few miles turn Econ off and see if your climate control suddenly jumps more into life, fan speed increases and the inside starts cooling down a lot faster.
Title: Re: Econ Mode
Post by: Jazzik on July 10, 2023, 02:19:47 PM
Your next mission, should you decide to accept it, is to climb into a hot car, say 40C to 50C+ Econ on, windows shut, and with a temp set to 21ish.

Who would do that? And why?
Title: Re: Econ Mode
Post by: shufty on July 10, 2023, 02:31:19 PM
Your next mission, should you decide to accept it, is to climb into a hot car, say 40C to 50C+ Econ on, windows shut, and with a temp set to 21ish.

Who would do that? And why?

? Perfectly obvious scenario...

...You're in your car it's very hot, you can't wind the windows down to let the heat out, as you're in a hurry and travelling down the motorway @70 so the noise would be deafening and ruin your fuel consumption figures too much.
You set your aircon but after a while you realise that you're not getting much cooler. Upon switching off the econ button you reach utopia and the car cools much quicker  ;D

Title: Re: Econ Mode
Post by: Jazzik on July 10, 2023, 07:22:52 PM
Maybe re-read the last sentence of this post of mine...

When it is really hot, above 30°C (like now here) I switch off Econ and then the air conditioning does indeed work more effectively.

Oh, and since when have we retirees been in a hurry? ??? And do we live next to the motorway slip road? ::)

:D
Title: Re: Econ Mode
Post by: coldstart on July 10, 2023, 07:32:23 PM
Pardon my barging in. As a future Jazz owner I find this discussion very interesting!
What I fail to understand is how exactly the more efficient air conditioning in normal mode should correlate to better fuel efficency ???
If I have learned anything yet it is that nothing comes from nothing.
Title: Re: Econ Mode
Post by: Marco1979 on July 10, 2023, 07:58:26 PM
Pardon my barging in. As a future Jazz owner I find this discussion very interesting!
What I fail to understand is how exactly the more efficient air conditioning in normal mode should correlate to better fuel efficency ???
If I have learned anything yet it is that nothing comes from nothing.
I think it has to do with compensation; both normal and econ make the car behave in a certain way. When you notice it and don’t like it, you will automatically compensate. E.g. setting the temp to another value or pressing the throttle more. This might work opposite.
In both settings you as a driver will ultimately make the car run economic. So choose what fits best to your needs.
Title: Re: Econ Mode
Post by: 5thcivic on July 10, 2023, 08:05:20 PM
I used to leave econ on in the last Civic since never needed a larger amount of acceleration from the 1.8 VTEC, and down at 35mpg it probably helped a little bit. At 60mpg plus in the Jazz I don't care so never even tried it yet.
Title: Re: Econ Mode
Post by: Lord Voltermore on July 11, 2023, 12:53:09 PM
Pardon my barging in. As a future Jazz owner I find this discussion very interesting!
What I fail to understand is how exactly the more efficient air conditioning in normal mode should correlate to better fuel efficency ???
If I have learned anything yet it is that nothing comes from nothing.
It doesnt. 
 Econ mode can sometimes help  in two ways.

 1)  It reduces aircon performance and subsequent energy use. Most benefit if you habitually leave air con on whether its needed or not.  But you can save even more energy if you manually switch aircon off completely when its not really needed.  .   And in very hot weather you may need to switch econ mode off anyway to get enough aircon performance. 

2) It  dampens down the speed at which the throttle reacts. Its of most benefit to  drivers who are less gentle and refined on the throttle than they should be. Some my not realise this applies to them.   Many drivers find that by taking care to be gentle  they can achieve even  better economy without econ mode.  I'm not saying that all drivers who habitually use econ mode have a heavy right foot. If it helps your fuel economy  carry on .
  ;D     .
Title: Re: Econ Mode
Post by: coldstart on July 11, 2023, 02:11:45 PM
I think it has to do with compensation; both normal and econ make the car behave in a certain way. When you notice it and don’t like it, you will automatically compensate. E.g. setting the temp to another value or pressing the throttle more. This might work opposite.
In both settings you as a driver will ultimately make the car run economic. So choose what fits best to your needs.
That makes a lot of sense to me! - Ultimately the driver can annihilate all technological benefits by driving unreasonably.
Title: Re: Econ Mode
Post by: Jazzfan49 on July 18, 2023, 02:37:02 AM
I use econ mode 90% of the time in my 23 plate SR, even when the temperature is above 25c the aircon is cold enough to make the car comfortable, my hands are literally freezing cold so I have to position the vents away from me, acceleration is still good enough for joining motorways and dual carriageways plus non dangerous overtaking manoeuvres, standard mode is great for upsetting the boy racer’s away from the lights while keeping to the speed limits  ;D