Clubjazz - Honda Jazz & HR-V Forums
Other Hondas & General Topics => Off Topic (Non-Honda) => Topic started by: guest244 on November 24, 2007, 04:14:14 PM
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I would be really interested to find out what everyone’s mpg is.
One of the many reasons I chose my Jazz was the impressive fuel economy figures. When I took delivery of my car, it had a full tank of fuel and the mpg was set at 0. I’ve had my car for 10 days now and the fuel gauge is showing just over half full. The mpg reading is 36.2. That seems quite low - how does it compare to yours?
It’s a 55 Sport with just over 8000 miles on the clock. It has only done short trips so far but today he’s going for a tootle on the motorway so I’m looking forward to seeing if that number gets any better!
[edit by RichardA 14 December 2009 - now a pinned topic]
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My MPG reads 36, but i only travel 8 miles a day to work, a lot of stopping and starting in the traffic to Wimbledon. I will let you know tomorrow when i take it on Motorway what it says then.
I love the car though, so easy to drive and very nippy!
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Hi jazzgirl
I picked up my 57 plate Jazz 1.4 Sport (manual) in September. I do a round trip to work of about 70 miles of which about 50 is by Motorway & the other a mixed town drive. On the Motorway, I usually do about 55-65 mph. Mixed with leisure trips, I have got, at worst, 42 mpg and at best 53 mpg.
The car mpg indicator has not matched these. It is about 2-3 mpg above or below the actual, so it can only be taken as a guide line.
To get an accurate mpg, start by from a full tank & reset your trip computer to 0. When you next go to the petrol station, fill the tank (till the petrol pump clicks off) & before you leave, take a note of the trip mileage and the number of litres on the pump (usually printed on the receipt as well). To convert to mpg, multiply the number of litres by 0.22. Divide the number of miles by the result of this calculation.
For example, say the trip read 203.1 miles & you filled the tank with 21.74 litres, then your miles per gallon would be:
21.74 x 0.22 = 4.7828. MPG: 203.1/4.7828 = 42.47
I believe that someone posted this calculation on this forum before (my thanks to them) & it has been a good guide. I used to own a Toyota Corolla 1.6 before the Jazz and the best I got from this one was 41 mpg.
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Mrs CE’s SE Sport (53 reg) with the alloy wheels and body kit seems to do about 45 - 47 real MPG on a fill to fill basis. She does a reasonable amount of work in town so we have seen 43 - 44 mpg on occasion.
It does, however, seem to vary quite widely with some later ones doing over 50mpg and I have seen over 60mpg (indicated) over 45 miles with a 1.2 litre manual. I do have a light right foot and the journey was mostly on A roads.
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Here is a website that has a calculator that easy converts the numbers for us Europeans over to the US MPG numbers:
http://www.carriertruck.com/new/convert.htm#fuel
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Bought the car on 19.09.07 since then I have been getting 43-45mpg around town and 47-49mpg on motorway runs. Dont leave the air con selected on it knocks the mpg by as much as 4-5mpg. You only need to switch on the air con for about 10 mins per week when the temperature outside does not call for cooling.
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We had a long run in it last weekend and it went up to 42 (mainly motorway). Since we got back the mpg changes between about 39.5 and 40 - that’s just tootling around and backwards and fowards to work (round trip about 3 miles).
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I average about 40mpg, which I find disappointing, as in my last car, a 1 litre polo, I averaged the expected 47mpg on much the same mix of journeys. The indicator shows nearly 50 mpg for longer journeys on open roads, but only 30 mpg for short journeys in town. I queried the consumption after the first thousand miles with the dealer, but although they expressed surprise at my records, they checked the engine computer, and said there was nothing wrong.
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Best I’ve seen is 51mpg
everyday use gives me 47 and a bit
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Hi there, I have a 2002 1.4SE jazz, Ave MPG = 48, worst = 42 & best = 52. Ive had it for 5weeks and found it to be a really nice little car. My previous car was a 2.0 nissan primera, I owned that for 8years. I am hoping to keep the Jazz for about 8 years too.
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before i changed to 16? alloys my mpg was around the 40’s but thats within london driving. i was driving on the motorway once and it went up to 45 ish’.
there are ways to improve mpg like early braking, properly pumped tires and driving like a “grandad”.
if you have 16? heavy alloys you would prob have an mpg around 35
agent_paul
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Hi
I have a jazz sport 07 model and i have found the fuel economy to be all over the place
Bought the jazz in april 07 and the fuel computer was reading about mid forties mpg
but never got anywhere near the 49mpg quoted in the brochure!
when the weather got colder end of last year it went down to about 36-37 mpg!
i asked the stealer and they cudnt give an answer!!
presently i am getting about 42mpg
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I’ve had my factory new 57 Jazz 1.4 SE cvt for a few months now. Engine not yet fully run in as I don’t drive many miles.
I’ve noted the tripmeter seems to be 4% more optimistic than actual calculations from my fillups at the station.
In case you are not aware, the trip meter apears to calculate the mpg from when it was last reset to Zero. On my car it can produce very erratic readings for first few miles after being reset but eventually stabilises.
fwiw, driving very short journeys around town, my cvt returns 37mpg on the tripmeter which is probably about 35+mpg real world. If I’m careful on the gas and with aircon switched off, I’ve seen a high of 49mpg on tripmeter which is probably 47mpg in real world when cruising down the motorway between 60-70mph.
Overall average, I get 40mpg between tank fills at the moment. (42mpg on tripmeter)
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[quote:1sru0br2]“On my car it can produce very erratic readings for first few miles after being reset but eventually stabilises.”[/quote]
Mine does that too.
Mine reads about 47mpg on normal driving.
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Hi, I am the tightest man in the world ;)
1.2s Jazz
The best I have ever had, 60 on a long motorway run was 62 mpg.
The same journey at about 70 gets me 54mpg
The same journey at about 80 gets me 47mpg
General running about gets me 48mpg.
I know these seem higher than most replys but please see first my comment, I use every method I can to get the best mpg :geek:
I have noticed that during cold weather the mpg drops by around 5mpg, I may have to start walking during the winter to combat this wast of money :o
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I have now had my jazz 1.4 sport for just over a year now and mpg has been disappointing
Honda claim 48.7mpg but the most I have ever got is 42mpg
I have also worked out the mpg on paper and still no more than 41-42mpg
So has anyone got 48.7mpg or better?
Also how?
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what kind of journies do you drive? mpg improves on longer runs.
the quoted figuares are by and large unrelistic, the EU needs a better way of measuring fuel comsumption.
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I commute 50 miles round trip per day, some town but mainly 'A' roads and I find it quite easy to get up to 55mpg on the readout, which is probably nearer to a real life 50mpg.
With a bit more thought, less rapid acceleration, change up early to keep the revs down and as little use of the brakes as possible I can get over 60mpg on the readout - which I know equates to over 55mpg.
The main thing is to hold back on the acceleration from a standstill, as this is what really eats up the fuel, change up as early as possible and try to keep the revs below 2000.
Short journies will drink up the fuel on any car, because when the engine in warming up the mixture is made richer by the ECU and more time is probably spent in 'stop-start' mode, which is really bad for fuel consumption.
And finally, up until recently most cars did not have the handy little 'mpg' readout, which now really makes people into anoraks about fuel consumption.
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i have a 2004 1.4 se
i think its awfull on fuel. my reading is 31 on average, the highest i have seen it go is 33 and that is on the motorway.
what cn i possibly do to fix this?
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The trip computer on the jazz has an update time of about 10 seconds, that means that every 10 seconds it looks at the present rate of fuel flow and averages it out over the amount of miles on the trip readout.
This means that if you zero the trip readout the mpg figure will respond rapidly to any change in your driving style because it is averaging over a very small mileage, but as the trip reading accumulates more miles the mpg reading will respond more slowly to the fluctuations in driving style/traffic condition.
I normally zero my trip every time I fill up the tank and experiment with different driving styles and gearchange points to see what I can get the reading up to, the best I got was 72mpg.
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A good topic for my first post. Done 38000 miles in our 2005 1.4 SE Auto at 44.8mpg. Mixture of rural roads, drives into Southampton and Bournemouth and some motorway.
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Just filled up the car when the warning light came on and took a note of the mileage to work out my MPG. The car advised 41.5mpg.
I filled up with 38.42 liters and the trip meter read 267.3 miles. Using Colgarf's calculation, this equates to 31.624mpg. This seams very poor to everyone else's and I'm worried by the discrepancy between my calculation and the cars reported value.
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Something wrong somewhere! You don't say whether you do mainly town or rural driving? I do a 50 mile round trip commute every day about 20% town 80% main 'A' road and get an mpg reading of about 54mpg in winter and about 60mpg in summer, I have checked this many times with the amount of fuel I put in and the 'car mpg readout' is about 10% optimistic.
The mpg calculator works best with steady speed and does not like erratic driving as it only updates about every 10 seconds (it takes a snapshot of the 'rate' you are using fuel at that instant and then uses that figure and the TOTAL miles on the trip meter to give an average mpg figure, that is why the mpg readout can vary a lot in the first 50 miles or so after you have reset the trip mileage but then it is lot steadier). Rolling down a hill after I just reset the trip meter I once saw 107mpg, I wish it stayed like that. The best I ever managed on my daily commute was 70mpg (driving VERY carefully, accelerating slowly, changing up early, keeping below 60mph, coasting down hills etc)
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I would say it was a 50 / 50 mix really. The last fill up and this one was from shell but the previous one was from a supermarket. I'm going to see how this one goes and maybe try an additive like redex or petrol detox / magic.
I can't find the fuel tank size in the manual but from previous posts, i assume it's 10 gallons.
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The fuel tank holds 42 litres or just over 9 gallons
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On average have about 5 litres left in the tank if I wait until the low fuel light comes on.
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Just filled up the car when the warning light came on and took a note of the mileage to work out my MPG. The car advised 41.5mpg.
I filled up with 38.42 liters and the trip meter read 267.3 miles. Using Colgarf's calculation, this equates to 31.624mpg.
The mpg calculation is likely to come out lower if you didn't brim the tank on the previous fillup prior to filling up recently.
When the warning light comes on and stays on, I always try to brim the tank on each fillup, and note down the miles covered and reset the trip meter each time. You should get more consistent readings and calculations this way. My mpg calcs are usually up to 2mpg less than what the trip meter reports.
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The previous 2 fill ups were at a shell garage and until the nozzle cut out. Both at the same pump.
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Really pleased with our new Jazz, over the 6 weeks we've owned it we're averaging just under 45 mpg in mixed conditions, I find the fuel comp pretty accurate, after brimming & checking mileage etc.. the comp only seems to be over reading by about 1 mpg, Steve
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Did a very rough 'rule of thumb' yesterday on a route I travel regularly and found that mine is more econmical at 3000rpm than 2500!
3000rpm equates to about 60mph and the gauge showed 51mpg. At 50mph the gauge showed 43/44!
Bearing in mind that the mpg is the average since the last trip reset, it's showing quite an improvement.
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I seem to recall that manufactures always had 56mph as the optimum speed to get the best fuel economy.
8)
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Acceleration - probably the biggest impact on fuel economy is acceleration, studies have shown that in urban driving accelerating slower and changing up earlier (as opposed to redlining it in every gear) can improve consumption by up to 40%.
Speed - next biggest fuel user is speed (where drag, and therefore power requirement is proportional to the square of the speed - which is why you can do 100mph with 80 bhp, but will need 400bhp to do 200mph). Above 30mph wind resistance really begins to become the major source of drag (obviously this will have more affect on a LandDrover Defender with the aerodynamics of a housebrick than a sports car with a Cd of 0.2). So all things being equal, the slower you drive the less fuel you will use.
Aircon- whether to use aircon is another choice, on an aerodynamic car like the Jazz driving with the windows open above 30mph causes a big increase in drag (unlike on the LandDrover where it has little affect) and it is probably better to open the windows around town but use aircon on main roads.
Weather conditions - the air temperature has quite an effect on fuel used, the colder the air the thicker it is (more drag), the engine also takes longer to warm up on a cold day, and a cold engine needs a richer fuel/air mixture to run - this can drag fuel consumption down to 20-25mpg for first couple of miles.
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I have been wondering about the effect on fuel consumption of using the air conditioning. I remember the salesman telling me to leave the fan on the low setting all the time (because the Jazz is prone to misting – which the salesman did not tell me). He also said you may as well leave the Air Con on all the time as well because the compressor is much smaller and more efficient these days that the effect on fuel consumption is a lot less than it used to be. I was reluctant to take his advice as on my previous car the use of air con had a marked negative effect on fuel consumption.
I decided to investigate:
At weekends we often visit relatives who live 15 miles away, a gentle cross country run.
On a recent journey I filled up near the start of the trip and reset the gauge. When I had returned home the computer had recorded 53 mpg (1.4SE CVT). The following week the weather conditions were similar. I filled up again and made the trip with the air con on and returned the same 53 mpg (my normal weekly consumption is 40ish). Now I know it was not very scientific as speeds and traffic conditions can vary but it seems that using air con on the Jazz is not that detrimental to fuel consumption.
As a result of this I have been using air con much more. In traffic I use it in recirc mode as I do not like drawing in the traffic fumes. I sometimes wonder if it is wrong to use recirc for extended periods; is it possible to use up the air in the car if no fresh air is coming in? A work colleague laughs at this as he runs in recirc nearly all of the time, he says air con is more efficient used like that.
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I too have noticed that using the a/c does not have that much effect on the fuel consumption. The benefits far outweigh the extra fuel used. I wouldn't use the recirc function for longer than necessary. The inside glass will after a while mist/steam up as well as the air inside being uncomfortable to breathe.
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While it may be true that recirc is a bit more more efficient, I wouldn't use recirc A/C on the Jazz because the aircon unit is very efficient anyway, has negligible effect on fuel consumption, and the Jazz it is far too prone to misting up in anything but the best of weather (If it rains and the windows start to mist up, the only way to clear them is to put on the aircon and the heater together to dry and warm the air coming into the car).
I believe, from experience that having recirc on all the time can also lead to you getting drowsy. The combination of pollen filter and the aircon heat exchanger will take most of the crap out of the air coming into the car anyway. It is a good thing to replace the pollen filter at least once a year as it blocks up pretty quickly and cuts down the amount of air coming into the car - spring is probably the best time. You may be surprised how black the filter is when you remove it.
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Bear in mind that airconditioning makes the air in the car very, very dry, and can lead to sinus problems and headaches if it is constantly used. It is probably better to save it for when the weather really requires it thanto use it all the time.
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Hi, My new 1.4 Jazz which I bought new last November regularly gets around 52 mpg (according to the computer) although it gets 2 or 3 mpgs less when I use Tesco petrol.
This is still better than my last 2006 Jazz which only on rare occasions reached 50 mpg. So the new model is definitely slightly more economical which is exactly what Honda claim.
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;D
Just did a fuel check again now that i had to fill up. The MPG has increased from 31.6 previously to 44.7. The computer advised 44.2.
Have added a pot of Dtox lets see if i can get any better.
;D
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Just another calculator between mpg and km/l...
http://www.vangeyn.net/mpg/
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Just another calculator between mpg and km/l...
http://www.vangeyn.net/mpg/
US gallons, so watch out!
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I did a first fuel check since i bought the car in Jan 2009 its a Jazz SE on a 55 plate with 15000 on the clock.......i filled the tank to the very top, did a coast run and back then filled it up to the top again.......the numbers crunched out at 51 mpg.....some motorway high speed driving involved too as well as winding coastal roads.....I'm happy with that!!! ;D
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O.k so with the D-tox in the tank, the first 100 miles was town driving and the computer read out was 39.1 mpg. The rest of the tank was used to get from Kent to Lowestoft and back. The Jazz did not quite make it and i had to fill up at Lakeside (Tesco). The result was a decrease in mpg to 41.45. The car did have more of a load and the D-tox was present so this will of had an impact. I will post the next calculation but the one after is the one i am interested in as this will be a fill up at my normal shell garage.
:-\
Reading the other posts, it might be changing the spark plugs give a bigger improvement.
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I regularly got between 39 to 41 MPG, I tend to do short journeys roughly 25 miles per day, but over the weekend I drove down to the Lake District, approx 200 miles. Then did a return drive home via sedgefield, 290 miles. On the return journey I got as much as 57 MPH and today my short drives gave me a reading of 51.5 MPH.
I have read that giving your engine a service followed by a long drive at high speed is good for reducing your emissions but didn't know it could also improve your MPH.
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Have you zeroed your trip mileage since you did the long journeys? The 'mpg' reading responds very quickly to changes in driving conditions just after trip mileage display has been reset but as the trip mileage rises the rate of using fuel (mpg) readout responds slower and slower (the calculations done by the computer must use the total mileage on the trip and the present 'rate' of fuel use (the flow sensor is sampled about every 10 seconds) to work out the 'mpg'). If you haven't reset the 'trip mileage' this means that you will still be getting a 'hangover' effect from the good 'mpg' readings on your long trip. Personally I reset the trip to zero every time I fill the tank and experiment with different driving styles to see how they affect my 'mpg' display.
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Like you I too reset the trip mileage every time I fill up.
Update. I have refilled my tank and reset the trip milage and am still getting around 50/51 MPG doing city driving.
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I put 40 litres* of ASDA unleaded two weeks ago and got 250miles out of half a tank! Of course as we all know, the second half will be drunk faster then the first but the figures look good so far.
*Playing fuel-light bingo is not advised nor something I do normally - I usually go to Esso once the light comes on and normally get about 37 litres in the tank until it 'clicks'. 40 litres is a lot in to a 42 litre tank but by no means the most I've put in - that would be 42.05 litres!
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Someone posted this link on Pistonheads. Basically, it's a site to compare real-world mpg figures with manufactuer's claims:
http://www.actualmpg.com/
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O.K so after a full tank of petrol, a trip to Lowestoft and back from Kent and a few short journeys . I have now calculated the mpg to be 45.366. This is up from about 35 on my first post. I am due to service the car soon so i will see how much better it gets with clean spark plugs and a new air filter.
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The ASDA tank only gave me 44mpg according to the spreadsheet (47 on the trip computer). I put a full tank in 12miles after the light came on and got 39 litres in. Usually I can only get 37 litres in until the pump 'clicks'.
Different petrol station then usual though.
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Anyone ever mistaken the trip counter for the mpg readout?
I have :-[
Almost had me there as the 'mpg' climbed from the high 40's to the mid 50's :D
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Richard,
It is called "looking and not seeing" a well known problem in aviation circles.
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'Should have gone to specsavers!'
I think 'looking and not seeing' is a general problem in life, not just in aviation circles (or should that rather be 'aviation spins, loops or circuits?').
I have briefly mistaken the trip for mpg but realised that it was reading 75, and that it may have been a case of 'wishfull looking'.
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The problem i have with my own car is when i look at the fuel gauge i think its wrong, after having a few journeys in my wifes Jazz......... :'(
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G'day from Australia.
Our 06 1.3l GLi CVT used just 66km per day, mostly on on the motorway to get to work gets 5.6l/100km (50.443024345000005 mpg) (maximum speed 100 kph (about 62 mph)).
If we go on a trip to our favourite beach we get 4.2l/100km (67.25736579333334 mpg).
This is also over motorway roads with maximum speed of 110 kph. ;D
Since it is such a lovely day here today we are about to go to to Noosa beach now.
It is mid-winter here in Queensland and the temprature is a rather CHILLY 21 degree Celsius (69.8 degree Fahrenheit) :P
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Lucky s-d!
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Lucky s-d!
Yes, I am. Thank you. :D
My Mother and Father were Londoners (East End, during the Blitz).
Came to Aus in 1950 and NEVER went back. ;D
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G'day gramin and welcome to the best Jazz forum in the world. I don't doubt that the warmer weather in Oz helps your fuel consumption and we can't hope to match your figures in cold and wet blighty.
We lived in Sydney Northern Beaches area for 8 years, but are now back in UK - didn't like the weather too much - loved the people though and still have many friends who we keep in touch with.
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You should have come to Brissie.
MUCH better than Sydney
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Welcome gramin :)
Dare I ask, how much is your petrol over there?
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We lived in Sydney Northern Beaches area for 8 years, but are now back in UK - didn't like the weather too much
The first person I've met who thinks that! :)
Main off-putter is the wildlife - my sister went down under a few years back to visit a pal from uni, and had a bit of a fright when she found a spider as she flipped down the sunvisor of her mate's Holden Barina (aka Vauxhall Corsa) :o . Massive bugger, but thankfully the relatively harmless Huntsman spider and not the highly dangerous Funnelweb.
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Welcome gramin :)
Dare I ask, how much is your petrol over there?
Price around Brisbane this weekend $1.30Au per litre (about 3 UK pounds per gallon (I think)). :'( :( >:(
This is for 91 ron unleaded.
Diesel is about 10 cents/Litre dearer. As is premium unleaded (95 ron)
E10 Ethanol is about 10 cent/litre cheaper and is rated for some reason at 91 ron
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I love my Jazz, which is a 54 reg 1.4 se. We have had it for 4 and half years now, and it just gets better and smoother and we have not re-set the mileage trip for about 18 months and the average to date is 46.4 and that is mostly about town ! when I was in a "lets see what it will do " mode, I managed 60 mpg on a run of 121 miles keeping the speed to no more than 60 mph that was on mainly duel carriageway and A roads, and before you ask, there were no tale backs behind us !
Even when we have driven quite fast on the same route we have still attained mid fifties. So, yes I am well pleased with our little Jazz, can`t see us ever parting with her !
tommo0_5
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Filled my GD 1.4SE up with 97RON super petrol last week and am generally getting about 4 to 5 mpg better fuel consumption than with 'normal' 95RON petrol - I have done this previously and always see better figures. With supermarket petrol the consumption goes the other way :( - so by paying about 8 pence a litre more (about 7% extra) you can get about 8% better consumption - sort of cancels out the extra cost really and engine feels more lively too.
I wonder if car manufacturers use 'super' fuel to get their mpg figures ???
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I've got a new 2009 Jazz 1.4 ES i-shift, which I have had for just under 2 months, and I must say I'm very pleased with.
Ever since I've had it, the MPG reading has been about 54 mpg, but over the last week,
I've noticed it has dropped to about 46 MPG. Today when I took it out, I've noticed it has now increased to about 62 MPG, and stayed there all day.
I've not filled the tank since this has started to happen, do you think I have a problem
with the computer.
Any thoughts from anyone please!
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No I don't think you have a problem. Its just the computer working out the fuel used according to use
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1.4 Sport..Motorway driving 51 MPG @ 60 - 65 MPH Winter Weather 40 miles.
1.2s was the best so far at 61 MPG @ 60 MPH Summer Weather. ;D
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I can coax 65mpg (reported) at about 55-60mph in summer, given a relatively flat motorway and no passengers. The hills (eg. Holywell and Rhuallt on the A55 in North Wales) are petrol eaters. The upside is that the Jazz will happily cruise up both those hills at 65-70mph, whereas my previous car (a K11 Micra 1.0L) struggled.
The display is currently showing about 52mpg, having done a long run (about 300miles) and some local driving.
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I have filled up recently with the Shell V-Power and driven up to Lowestoft and back from Kent. I have calculated my MPG to 45.1, which is no different from my previous post. Therefore i have not noticed a difference in MPG although the last post was in June so that may have an impact. I also came across this site to quickly work out your MPG. http://www.torquecars.com/tools/uk-mpg-calculator.php (http://www.torquecars.com/tools/uk-mpg-calculator.php)