MPG Fuel economy survey

Pottsy · 12th July 2007, 13:48

I have made a fuel economy survey:

http://www.civinfo.com/forum/survey.php

The survey asks all sorts of questions about modifications to your car, your running in method and how quickly you drive and I understand that this might put a few people off. So, it is anonymous, so your secrets are safe.

Once there is a bit of data there, we should be able to see the effect of tyres, running in, driving style, cruising speed and so on for all the different engine types.

ruracer · 12th July 2007, 18:13

My car can switch between showing MPH and MPG and KMH and L/100KM.
I see some people have filled in the survey probably guessing at the conversion to MPG. There is a button beside the selector for the trip computer to switch between them.

Pottsy · 12th July 2007, 18:44

There will be results all over the place, because if you don't filter the results then you are seeing petrol mixed with diesel....

Use the filter, Luke.

WoolyCiv · 12th July 2007, 21:52

Either some of us have filled in incorrect MPG figures or else I have just found out that I am a crap driver where economy is concerned

Pottsy · 12th July 2007, 22:41

I think there are a group of people who tootle around at 55 mph max....

ruracer · 12th July 2007, 22:45

I just looked at the improvements for next model survey...some of the questions dont apply to me, i cant select my exact model of car(saloon 1.8 SE-S) onlythe hatchbacks are represented
and the suggestions are unexpected.
Like being able to close windows and sunroof with ignition off, I can do and I have keyless entry and can open the boot with the key too.
I thought the hatchback was essentially the same car? what gives? many small differences and others bigger like suspension. I dont have the torsion beam but double wishbone rear suspension instead.
I hadnt noticed these differences before when considering buying looking at the honda website and other magazines, etc. Odd.

Anyway, what was your posted MPG if I may ask, Woolyciv?
Are you way off? I looked at my results and Im pretty much in the highest vote category for nearly every question.

WoolyCiv · 12th July 2007, 22:55

Mostly around town? (Miles per Imperial gallon) 32
An equal mix of town and motorway / main roads? (Miles per Imperial gallon) 37
Mostly motorways and main roads? (Miles per Imperial gallon) 43

ruracer · 12th July 2007, 23:03

no , thats not way off. looks ok to me. maybe its the diesel figures throwing you off.
diesel is maybe 45-50 range?

Kremmen · 13th July 2007, 07:00

I agree - those figures look spot on for the 1.8 to me.

pjr · 13th July 2007, 07:47

Quote:

Originally Posted by WoolyCiv

Mostly around town? (Miles per Imperial gallon) 32
An equal mix of town and motorway / main roads? (Miles per Imperial gallon) 37
Mostly motorways and main roads? (Miles per Imperial gallon) 43

Agree with Kremmen there ~ those are near identical to my figures.

Pottsy · 13th July 2007, 08:02

Just looking at it now, 35/40/42 seems to be where the 1.8 results are.

You have to use the filter.

Click on the check box by the engine question and press Go:

filter1.gif

Then tick 1.8, and press Filter:

filter2.gif

Now all the results are for the 1.8 only:

filter3.gif

You can filter for all sorts of criteria - so we can see the effect of tyres, driving style, running in and so on. As before, when the survey dies down, I'll do a summary.

ruracer · 13th July 2007, 09:07

cool, interesting to see summary

PTR · 13th July 2007, 10:42

Pottsy,

Could you please insert L/100km in the charts also? because mpg does not say to much for me...

(and for lot of other people I guess

)

Pottsy · 13th July 2007, 10:56

I will, when I do the final analysis.

WoolyCiv · 13th July 2007, 19:52

Quote:

Originally Posted by pjr

Agree with Kremmen there ~ those are near identical to my figures.

When I made my original post the number of folk completing the survey was pretty low and when I compared my figures to the others (Same model, same engine, same gearbox), there were some MPG figures that looked a little suspect to me (high 30s for town driving - obviously not driven in Preston during the rush hour!). I suspect that someone with a diesel thinks it is petrol engined

Pottsy · 15th July 2007, 22:30

Little teaser for the diesel (I'll do it all in a couple of weeks when the submissions die down):

22teaser.gif

Egelundsvej · 16th July 2007, 13:57

Have now had my 1,8 Sport for 9 months and driven almost 27000 kms - I guess close to 17k miles. Instrument read out is almost invariably between 6,9 and 7,1 litres per 100 km which should be about 14,28 kilometers per litre or in the region of 40,6 miles per gallon. The truth is however that the calculated average is 13,1 kilometers per litre or 37,23 miles per gallon - a difference of 9,05%.

Strange to say, I had the speedometer checked at an independent test station (Danish equivalent of the AA) and the speedometer overreads by between 8,7% and 9,1%, right across the range from 30 kph to 150 kph, i.e. when the speedometer show 100kph, true speed is 91,9 kph.

I am a very happy Civic owner but I truly believe that Honda have pimped the performance figures for the car - both economy, speed and probably the kW and Nm figures too!!

But it is still a great car - as I've said before, every mile is a smile.

ruracer · 16th July 2007, 14:07

Yeah but every car is gonna be like that. So you can still compare across the marques/models as the baseline would be the same.
You have probably experienced this, when you are behind another car and going through a speed trap, you both do say 80kmh on your speedos and you do not catch up with the car in front or get caught from behind either.
The fuel figures are measured independantly of the manufacturers so the baseline should be the same there too. So while it may not be a true 7.1 L/100KM, at least you can know you still get better economy than a car that states it gets 7.6 L/100KM.

By the way, I drive a 1.8 saloon and have done 1000KM, so my B trip says 7.5 and my A trip over the last 250KM says 7.2 L/100KM.

Another thing, I can reset the A trip but can I reset the B trip too? I havent tried it yet as I dont want to reset it at the moment.

richierich · 16th July 2007, 17:58

You just hold the reset button when you are on the B fuel economy figures. I use them both, the A for the tank mileage and the B for the journey mileage (when on business)

ruracer · 16th July 2007, 18:51

yeah, I know. I use them the opposite way around at the moment and I think I might leave it that way. I havent touched trip B since I got the car to show my overall effciency on the total car mileage and trip A is my journey one or tank one if I wish.
I just wondered if trip B both could be reset like I do with trip A already.
But Ill leave it I think, interesting to see in a years time or more what the overall efficiency of the car is, the longer I leave it the more accurate it should be.

12th July 2007, 13:48	#1 (permalink)
Pottsy Administrator Civinfo guru Join Date: 10th April 2006 Location: Leics Posts: 4,772 Thanks: 7 Thanked 64 Times in 33 Posts	Fuel economy survey I have made a fuel economy survey: http://www.civinfo.com/forum/survey.php The survey asks all sorts of questions about modifications to your car, your running in method and how quickly you drive and I understand that this might put a few people off. So, it is anonymous, so your secrets are safe. Once there is a bit of data there, we should be able to see the effect of tyres, running in, driving style, cruising speed and so on for all the different engine types.

13th July 2007, 10:42	#13 (permalink)
PTR Magic Rear Seat Join Date: 4th October 2006 Location: Hungary Posts: 668 Thanks: 0 Thanked 0 Times in 0 Posts	Pottsy, Could you please insert L/100km in the charts also? because mpg does not say to much for me... (and for lot of other people I guess)

16th July 2007, 13:57	#17 (permalink)
Egelundsvej Supporter Locking Wheelnut Join Date: 13th December 2006 Location: Koege, Denmark Posts: 102 Thanks: 0 Thanked 0 Times in 0 Posts	Fuel Economy/mpg Have now had my 1,8 Sport for 9 months and driven almost 27000 kms - I guess close to 17k miles. Instrument read out is almost invariably between 6,9 and 7,1 litres per 100 km which should be about 14,28 kilometers per litre or in the region of 40,6 miles per gallon. The truth is however that the calculated average is 13,1 kilometers per litre or 37,23 miles per gallon - a difference of 9,05%. Strange to say, I had the speedometer checked at an independent test station (Danish equivalent of the AA) and the speedometer overreads by between 8,7% and 9,1%, right across the range from 30 kph to 150 kph, i.e. when the speedometer show 100kph, true speed is 91,9 kph. I am a very happy Civic owner but I truly believe that Honda have pimped the performance figures for the car - both economy, speed and probably the kW and Nm figures too!! But it is still a great car - as I've said before, every mile is a smile.

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This thread is about: Fuel economy survey, it's in Engines and Transmission at the Honda Civic forum Civinfo; I have made a fuel economy survey: http://www.civinfo.com/forum/forumdisplay.php?f=41 The survey asks all sorts of questions about modifications to your car, your running in method and ...

12th July 2007, 18:13	#2 (permalink)
ruracer Wheelnut Join Date: 5th July 2007 Posts: 76 Thanks: 0 Thanked 0 Times in 0 Posts	My car can switch between showing MPH and MPG and KMH and L/100KM. I see some people have filled in the survey probably guessing at the conversion to MPG. There is a button beside the selector for the trip computer to switch between them.

12th July 2007, 18:44	#3 (permalink)
Pottsy Administrator Civinfo guru Join Date: 10th April 2006 Location: Leics Posts: 4,772 Thanks: 7 Thanked 64 Times in 33 Posts	There will be results all over the place, because if you don't filter the results then you are seeing petrol mixed with diesel.... Use the filter, Luke.

12th July 2007, 21:52	#4 (permalink)
WoolyCiv 12th June 2006 1.8EX Rocketship door handle Join Date: 28th May 2006 Location: Lancashire Posts: 1,118 Thanks: 0 Thanked 0 Times in 0 Posts	Either some of us have filled in incorrect MPG figures or else I have just found out that I am a crap driver where economy is concerned

12th July 2007, 22:41	#5 (permalink)
Pottsy Administrator Civinfo guru Join Date: 10th April 2006 Location: Leics Posts: 4,772 Thanks: 7 Thanked 64 Times in 33 Posts	I think there are a group of people who tootle around at 55 mph max....

12th July 2007, 22:45	#6 (permalink)
ruracer Wheelnut Join Date: 5th July 2007 Posts: 76 Thanks: 0 Thanked 0 Times in 0 Posts	I just looked at the improvements for next model survey...some of the questions dont apply to me, i cant select my exact model of car(saloon 1.8 SE-S) onlythe hatchbacks are represented and the suggestions are unexpected. Like being able to close windows and sunroof with ignition off, I can do and I have keyless entry and can open the boot with the key too. I thought the hatchback was essentially the same car? what gives? many small differences and others bigger like suspension. I dont have the torsion beam but double wishbone rear suspension instead. I hadnt noticed these differences before when considering buying looking at the honda website and other magazines, etc. Odd. Anyway, what was your posted MPG if I may ask, Woolyciv? Are you way off? I looked at my results and Im pretty much in the highest vote category for nearly every question.

12th July 2007, 22:55	#7 (permalink)
WoolyCiv 12th June 2006 1.8EX Rocketship door handle Join Date: 28th May 2006 Location: Lancashire Posts: 1,118 Thanks: 0 Thanked 0 Times in 0 Posts	Mostly around town? (Miles per Imperial gallon) 32 An equal mix of town and motorway / main roads? (Miles per Imperial gallon) 37 Mostly motorways and main roads? (Miles per Imperial gallon) 43

12th July 2007, 23:03	#8 (permalink)
ruracer Wheelnut Join Date: 5th July 2007 Posts: 76 Thanks: 0 Thanked 0 Times in 0 Posts	no , thats not way off. looks ok to me. maybe its the diesel figures throwing you off. diesel is maybe 45-50 range?

13th July 2007, 07:00	#9 (permalink)
Kremmen Krem de la Krem Civinfo guru Join Date: 7th January 2007 Location: West London Posts: 2,415 Thanks: 3 Thanked 8 Times in 8 Posts	I agree - those figures look spot on for the 1.8 to me.

13th July 2007, 08:02	#11 (permalink)
Pottsy Administrator Civinfo guru Join Date: 10th April 2006 Location: Leics Posts: 4,772 Thanks: 7 Thanked 64 Times in 33 Posts	Just looking at it now, 35/40/42 seems to be where the 1.8 results are. You have to use the filter. Click on the check box by the engine question and press Go: filter1.gif Then tick 1.8, and press Filter: filter2.gif Now all the results are for the 1.8 only: filter3.gif You can filter for all sorts of criteria - so we can see the effect of tyres, driving style, running in and so on. As before, when the survey dies down, I'll do a summary.

13th July 2007, 09:07	#12 (permalink)
ruracer Wheelnut Join Date: 5th July 2007 Posts: 76 Thanks: 0 Thanked 0 Times in 0 Posts	cool, interesting to see summary

13th July 2007, 10:56	#14 (permalink)
Pottsy Administrator Civinfo guru Join Date: 10th April 2006 Location: Leics Posts: 4,772 Thanks: 7 Thanked 64 Times in 33 Posts	I will, when I do the final analysis.

15th July 2007, 22:30	#16 (permalink)
Pottsy Administrator Civinfo guru Join Date: 10th April 2006 Location: Leics Posts: 4,772 Thanks: 7 Thanked 64 Times in 33 Posts	Little teaser for the diesel (I'll do it all in a couple of weeks when the submissions die down): 22teaser.gif

16th July 2007, 14:07	#18 (permalink)
ruracer Wheelnut Join Date: 5th July 2007 Posts: 76 Thanks: 0 Thanked 0 Times in 0 Posts	Yeah but every car is gonna be like that. So you can still compare across the marques/models as the baseline would be the same. You have probably experienced this, when you are behind another car and going through a speed trap, you both do say 80kmh on your speedos and you do not catch up with the car in front or get caught from behind either. The fuel figures are measured independantly of the manufacturers so the baseline should be the same there too. So while it may not be a true 7.1 L/100KM, at least you can know you still get better economy than a car that states it gets 7.6 L/100KM. By the way, I drive a 1.8 saloon and have done 1000KM, so my B trip says 7.5 and my A trip over the last 250KM says 7.2 L/100KM. Another thing, I can reset the A trip but can I reset the B trip too? I havent tried it yet as I dont want to reset it at the moment.

16th July 2007, 17:58	#19 (permalink)
richierich Smell My Cheese! Rocketship door handle Join Date: 17th May 2006 Location: Bicester, Oxfordshire Posts: 1,844 Thanks: 0 Thanked 0 Times in 0 Posts	You just hold the reset button when you are on the B fuel economy figures. I use them both, the A for the tank mileage and the B for the journey mileage (when on business)

16th July 2007, 18:51	#20 (permalink)
ruracer Wheelnut Join Date: 5th July 2007 Posts: 76 Thanks: 0 Thanked 0 Times in 0 Posts	yeah, I know. I use them the opposite way around at the moment and I think I might leave it that way. I havent touched trip B since I got the car to show my overall effciency on the total car mileage and trip A is my journey one or tank one if I wish. I just wondered if trip B both could be reset like I do with trip A already. But Ill leave it I think, interesting to see in a years time or more what the overall efficiency of the car is, the longer I leave it the more accurate it should be.