Author Topic: MPG for those interested.  (Read 172604 times)

Sidot

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MPG for those interested.
« on: February 12, 2016, 02:52:13 PM »
Collected car mk3 SE 29.9.15.
10 miles on the clock .....now 2131.
46.66 gallons used 1818 miles covered = overall 38.96 mpg.
All "around the town Autumn and Winter" driving, except one 197 mile trip to South Wales.
I drive carefully and try for best optimum.
Only slightly better than mk2 1.2 ltr. Which was about 34/35 comparing like for like.
I see a Mk2 go past and still admire the smooth lines whilst trying to get my Honda Connect to do what I want it to !!!

Edit by Admin: made topic a sticky topic.
« Last Edit: February 13, 2016, 02:41:55 PM by RichardA »

guest5924

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Re: MPG for those interested.
« Reply #1 on: February 12, 2016, 03:51:02 PM »
I pick up my Jazz SE on the 23.12.15 and to date I have done 850 miles filled up today for the fourth time and the
        clocks tell me the average M P G is 48 which I think is not to bad , K L J

John Ratsey

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Re: MPG for those interested.
« Reply #2 on: February 12, 2016, 07:06:23 PM »
My Mk 3 is just over 2000 miles and averaging 56 mpg. However, a lot of the miles were accrued in September and October as longer trips in better weather. If I don't need to go anywhere during the winter months then I don't go. The computer strugges to report much over 40 mpg for shorter trips in winter and I know that it is optimistic.

Wait for some nice summer weather and the mpg will take an upwards leap plus, I hope, there will be a gradual improvement as the engine gets run on. The target for my Mk 3 is to equal the 58.8 mpg which my previous hybrid Jazz had averaged. However, if Honda are promising a 99g/km CO2 Civic with 1 litre 3 cylinder turbo engine then the same engine in the Mk 3 Jazz (if/when it appears as an option) could give significantly better mpg than our current engines.
2022 HR-V Elegance, previously 2020 Jazz Crosstar

John Ratsey

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Re: MPG for those interested.
« Reply #3 on: March 05, 2016, 02:20:24 PM »
Made a trip from Swindon to Somerset last Thursday. About 80 miles each way. I used the motorway (60 to 75 mph) for the outward trip, slight headwind and the computer said 60 mpg. I used the A361 for the return home (30 to 60 mph depending on traffic and speed limits) and the computer showed 66 mpg. Based on my previous observations I would deduct 5 mpg to get real values.
2022 HR-V Elegance, previously 2020 Jazz Crosstar

dfconnolly

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Re: MPG for those interested.
« Reply #4 on: April 04, 2016, 06:15:35 PM »
The only way to get meaningfull mpg figures is to measure the miles recorded between fill ups against the actual fuel put in as measured at the pump.

I find the computer readout on my Hubrid is generally optimistic by at least 4mpg

Regards

Dave C
From the advert "Who knows where you’ll go?"

Downsizer

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Re: MPG for those interested.
« Reply #5 on: April 20, 2016, 11:04:49 AM »
I've just completed a 3 day trip from Suffolk to York to Salford and return, a total of 460 miles and I was surprised to be able to complete it on one tankful (of ASDA 95).  It was 95% on dual carriageway (A14/A1/A64/M62) using cruise control on 68 mph wherever possible.  The average speed was 54 mph and there was one blob left on the fuel gauge bar chart when I got back (but only 4 miles left apparently!).  The refill took 36.7 litres giving 12.5 miles per litre or 57.0 mpg.  The trip meter showed 60.4 mpg.  The combination of CVT and cruise control is clearly more frugal than my right foot.

jazzeck

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Re: MPG for those interested.
« Reply #6 on: April 23, 2016, 08:38:38 PM »
Certainly agree with dfconnolly on only using actual miles and fuel added, I have studiously (because I have time) recorded fuel consumption this way for my last 5 Honda cars, 2 Civics, 1 Accord 2 Jazzes and will do so for my new Jazz - to be delivered on 19th May. In all cases where fitted the on board consumption optimistic by about 4mpg.

jazzeck

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Re: MPG for those interested.
« Reply #7 on: April 25, 2016, 12:37:52 PM »
Also for mk2 EX average mpg for 18370 miles is 45.2.
My wife's mk 2 ES average mpg for 30493 miles is 47.1

AlanTR

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Re: MPG for those interested.
« Reply #8 on: May 22, 2016, 06:08:21 PM »
Only owned our 2016 SE CVT for a few weeks but we have recently driven from Tyneside to Cornwall, Devon, Dorset and back - about 8 days and 1200+ miles - averaged 54.9 mpg (trip computer) which seems OK assuming that it's reasonably accurate.

Our previous diesel car, a Hyundai IX20 1.4 CRDi, based on previous experience, would have probably done the same trip at around 56 mpg, so I'm quite impressed with the petrol Jazz. 

VicW

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Re: MPG for those interested.
« Reply #9 on: May 22, 2016, 07:21:05 PM »
Alan, your 54.9mpg is probably about 52mpg actual if most trip computer readings are anything to go by. My 2011 CVT in which I do almost no short journeys, records about 51mpg computer mpg which is 48mpg actual.

Vic.

AlanTR

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Re: MPG for those interested.
« Reply #10 on: May 24, 2016, 07:37:48 PM »
Thanks for the info - I expected the trip accuracy to be around +/- 5%. So, I'm happy as 52 mpg is also quite good for a petrol car. Great little car....!

John Ratsey

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Re: MPG for those interested.
« Reply #11 on: May 25, 2016, 09:15:22 PM »
The computer on my Jazz is reading about 10% optimistic based on >3,000 miles. My previous Jazzes were less optimistic and I have to wonder whether Honda is trying to create an illusion of significantly improved mpg when, in reality, the difference is more modest.

I've just been to, around and from Cornwall and the average of 2 fill-ups was 56.1 mpg (based on litres and miles). A good mixture of driving ranging from motorway to country lanes.
2022 HR-V Elegance, previously 2020 Jazz Crosstar

Downsizer

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Re: MPG for those interested.
« Reply #12 on: June 03, 2016, 06:39:24 PM »
I've had the car (SE cvt) for 3 months now, and completed 3149 miles of mixed motoring (35 mph average) on 281.7 litres of supermarket RON 95 fuel.  This gives 50.8 mpg, compared to 46.1 for a similar pattern of motoring in my previous 1.4 Mk2 manual.  I'm very happy with this 10% improvement.

Quote from John Ratsey in the Mk2 thread in February:"I think a fair target would be around 10% improvement. The auto idle stop will save a bit of fuel under stop-start driving, the Mk 3 has slightlly better aerodynamics which helps the open road mpg, plus there are tweaks to the engine and its management system."

andruec

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Re: MPG for those interested.
« Reply #13 on: June 20, 2016, 09:48:52 AM »
During my 20 mile commute (extra urban with 2 miles urban) it's settled down to around 50mpg.

On a drive back from North Wales (180 miles, steady 60 all the way) it managed 67mpg.

mikebore

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Re: MPG for those interested.
« Reply #14 on: June 20, 2016, 09:55:42 AM »
During my 20 mile commute (extra urban with 2 miles urban) it's settled down to around 50mpg.

On a drive back from North Wales (180 miles, steady 60 all the way) it managed 67mpg.

Thanks....is that as displayed in the car info screens, or calculated from tank input? About 3 mpg different as far as I can tell so far.

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