8th Gen Civic - Concerns on fuel economy

[denot]

Would you mind telling me please how being winter effects fuel consumption? It is winter here as well & for the last 6 weeks (500 to 600km per week) i have used less than 7L/100km. Only fractionally but very consistant.

heater on all the time? QLD doesnt have as "wintery" as NSW or MELB... so I dunno if you need heater on in QLD...

[^^v]

i woulda thought u'd consume more in summer... as the a/c is constantly running...
i think the heater would have minimal effect on fuel consumption...

[denot]

i woulda thought u'd consume more in summer... as the a/c is constantly running...
i think the heater would have minimal effect on fuel consumption...

Not too sure about that... but what I thought is that in summer, you just have the A/C on mid (24-25 degree) and set the fan to high to save fuel... but for heater, no matter how many degree you set, it will consume the same fuel as if you put them on max (or Hi in our civic)... any tech ppl can help?

[buddah51au]

Using a heater has absolutely no effect on fuel consumption....period.
Think of a heater a a very small radiator situated behind the dash with a fan attatched. You control both the amount of hot water flowing through the heater radiator and the fan speed.
To the person who said it does not get cold in QLD, 14 consecutive mornings below 0 deg puts a quick ebd to a crazy comment.

[denot]

To the person who said it does not get cold in QLD, 14 consecutive mornings below 0 deg puts a quick ebd to a crazy comment.

Well thats only for this year I believe... the coldest ever for the past 20 year (according to chnl nine)

[buddah51au]

I stand bye my original comment, cold weather & using a heater has absoultely nothing to do with fuel ecconnomy.
You made the statement it doesnt get cold here, well let me tell you it does, every year we have cold weather, & that is coming from someone who lived in the southern highlands south of sydney.

[denot]

anyway... lets not continue the "weather" topic now shall we?

Just refil my car again today 31.50L for 321kms...

[Stubbsalicious]

Just bought my Civic VTi-L Manual about 4 weeks ago. I always fill up after 500k's, which is exactly a weeks driving for me. That uses just over 34l. So normally running at just above 6.8l/100km. That is about 40% highway and 60% in the streets.

[buddah51au]

19/06/07 20145 37.04 42.15 6.75 $45.52
25/06/07 20698 37.62 41.79 6.80 $48.50
02/07/07 21215 35.62 41.26 6.89 $43.78
09/07/07 21711 34.28 43.72 6.51 $42.13
16/07/07 22196 33.33 41.35 6.87 $40.97
23/07/07 22720 36.59 40.73 6.98 $44.24

[buddah51au]

Sorry about the mis post so try again.... here is a copy of my log book readings for the last 6 weeks. Very consistant i think.

Date km Ltrs MPG Lt/100k

19/06/07 20145 37.04 42.15 6.75 $45.52
25/06/07 20698 37.62 41.79 6.80 $48.50
02/07/07 21215 35.62 41.26 6.89 $43.78
09/07/07 21711 34.28 43.72 6.51 $42.13
16/07/07 22196 33.33 41.35 6.87 $40.97
23/07/07 22720 36.59 40.73 6.98 $44.24

[ido09s]

summer will of course affect fuel consumption as the air gets hotter and we all know how much engines love cold air. It may not be as noticable on a naturally aspirated car such as the Civic, but think of how much better a turbo car goes after having an intercooler fitted, and that is forgetting about the AC being used

I so far have gotten good fuel consumption.

first tank, a bit of highway driving 562klms, 45.2ltrs 91 octane
second tank all round town, 593klms, 43ltrs Mobil 91 octane
third tank all round town, 562klms, 45 ltrs and a bit of thrashing to help finish off the run in on the engine.

I have just filled up with BP Ultimate so will see if the 98 makes fuel consumption any better

[buddah51au]

I have noticed very little difference in fuel consumption, winter or summer, using air con or not. my all up average fuel consumption over 23,000km using standard unleaded fuel from woolworths is 7.05Lts/100km. Hard to beat i think