Fuel Economy

[Skarbro]

I get pretty good mileage. I\'m getting well over 300 km\'s at half tank every time, and I do a lot of city driving. Are you guys kicking into WOT every time?

[cstraw]

Here are my most recent fuel log entries:

Date $ L km miles l/100km mpg(m) mpg(I)
23-Jun 41.00 42.49 650.1 403.1 6.54 35.99 42.97
25-Jun 40.57 41.44 621.2 385.1 6.67 35.26 42.10
13-Jul 45.23 44.39 702.1 435.3 6.32 37.20 44.42
23-Jul 46.86 43.43 630.5 390.9 6.89 34.15 40.77
6-Aug 48.98 42.70 590.3 366.0 7.23 32.52 38.83
15-Aug 42.85 43.07 692.1 429.1 6.22 37.80 45.14
26-Aug 40.41 42.22 597.3 370.3 7.07 33.27 39.73
27-Aug 37.29 39.38 619.2 383.9 6.36 36.99 44.17
---------------------------------------------------------------------
average 2880.0 3223.4 44241.7 27429.9 7.29 32.28 38.55

My average is really creeping upwards. Hopefully I will break the 33mpg average soon. BTW, the car is a 2004 Mazda 3 Sport (78 000km) manual transmission. All calculations are done dividing the number of kilometers driven by the amount of fuel used (always filling tank). I have certainly noticed very good efficiency on longer smooth drives (few stops) over reasonable distances... common sense stuff!

Chris

[JPAV8S4U]

Ok... Here is my luck.. After 5000km on my 06, I have not yet gotten less than 600Km per tank.... To be honest the average is approximately 620KM per tank. At first, I thought it was due to the brand new engine (usually it is the opposite and you get less mileage... but ill take it) but the same mileage is coming to me after 5000Km on the engine.. I dont know what my luck is, but id assume most people have heavy feet... It is nice to accelerate at 3500...... try 2500-3000.... maybe that is the trick. I also only drive 100 on the 401 lol........ so you beat me to work by 3 mins...... WOOOPDY DOO!
maybe ill still beat you when you get pulled over..... and even show up to work with a few extra hundred in the bank and a few less points on the licence>? lol.. Aight.. thats enough... Cheers!

High Fives

[Chuckie]

if you\'re late to work. alot of people are going to be pissed. :p

I think I can get 620km a tank if I drove like a granny too.. I just think it\'s not worth the extra few bucks.

For the record, I get around 540 with 80% city driving.

[majic]

the lights comes on at 540 or you fill up @540 shitting your pants b/c u\'ve been driving on fumes ?

[Chuckie]

the second option. City driving sucks.

[majic]

Originally posted by Chuckie


the second option. City driving sucks.

ahhh for a minute i thought you had a beast of a car.. it\'s much easier to relate to everyone\'s \"mileage\" when we\'re all on the same page so L/100km is the easiest (no worries whether you mean US gallows or UK) so either...

when does your light come on? OR
how many L/100km does your car consume

[JPAV8S4U]

chuckie! you calling me a granny.... and btw... Im always early to work never a late departure for me ha ha haha... I leave a few mins earlier.... and i get an extra 120km per tank.... thank you very much

[SABIO]

my last check... since I have returned my car to stock.

41 Litres of gas....358 km. trusty math I hope... 20.5 miles per gallon.(all in town)

Thats a whole lot better than the 14-16Mpg I was getting. Man, I can\'t believe I was missing out on 4 Mpg with all those mods.

I wonder if I will get 500km on a tank if I do all highway?

I wish my car got 600-700km a tank like Mazda says it does. I might have actually purchased it after my lease. Mazda is getting my POS back. with the rusty rims, blown motor mount, windows that click, volume button that dosen\'t work, worn out seat, et al

[Flagrum_3]

Originally posted by SABIO


my last check... since I have returned my car to stock.

41 Litres of gas....358 km. trusty math I hope... 20.5 miles per gallon.(all in town)

Thats a whole lot better than the 14-16Mpg I was getting. Man, I can\'t believe I was missing out on 4 Mpg with all those mods.

I wonder if I will get 500km on a tank if I do all highway?

I wish my car got 600-700km a tank like Mazda says it does. I might have actually purchased it after my lease. Mazda is getting my POS back. with the rusty rims, blown motor mount, windows that click, volume button that dosen\'t work, worn out seat, et al

Hey Sabio, according to my figures your getting 24.5 mpg (imperial: 1gal=4.55l), which is still far from what you should be getting...it baffles me! I average 34 mpg and I don\'t baby it....just took her for a nice highway drive: average speed 150-160 kph @ approx 4000rpm, went 340k, used 30 liters...thats approx 32 mpg.I am curious what mods you took off?! I would expect certain mods to increase mileage such as intake and exhaust.As I\'ve mentioned before in other posts something must be wrong with the car\'s set-up...alas your averaging 10 mpg less than others, that\'s alot of mula over the long hall.


_3


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[FLIPDADY]

Originally posted by SABIO


I wonder if I will get 500km on a tank if I do all highway?

I just got 525km all hwy. I remember getting those kind of numbers when I first picked up the car.

[Flagrum_3]

Originally posted by FLIPSPEED

Originally posted by SABIO


I wonder if I will get 500km on a tank if I do all highway?

I just got 525km all hwy. I remember getting those kind of numbers when I first picked up the car.

+1 First 5or6000k fuel consumption was shite!....hey joe any Flippy Friday tonight?


_3


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[FLIPDADY]

Originally posted by Flagrum_3

Originally posted by FLIPSPEED

Originally posted by SABIO


I wonder if I will get 500km on a tank if I do all highway?

I just got 525km all hwy. I remember getting those kind of numbers when I first picked up the car.

+1 First 5or6000k fuel consumption was shite!....hey joe any Flippy Friday tonight?


_3


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Check the thread. Looks like a few peeps are coming out.

[SABIO]

Originally posted by Flagrum_3




Hey Sabio, according to my figures your getting 24.5 mpg (imperial: 1gal=4.55l), which is still far from what you should be getting...

We don\'t use Imperial Gallons. 1 gallon is 3.78 L .. correct...

[Flagrum_3]

Originally posted by SABIO

Originally posted by Flagrum_3




Hey Sabio, according to my figures your getting 24.5 mpg (imperial: 1gal=4.55l), which is still far from what you should be getting...

We don\'t use Imperial Gallons. 1 gallon is 3.78 L .. correct...

Who\'s we? If you mean Canadians then I\'m sorry mang, but a gallon here is 4.55 liters....3.78l is correct if your from the United States of America.

Anyways either way your using way too much fuel,...Have you ever had it diagnosed by a dealer?...just curious.



_3


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[TheProfessor]

Originally posted by FLIPSPEED

Originally posted by SABIO


I wonder if I will get 500km on a tank if I do all highway?

I just got 525km all hwy. I remember getting those kind of numbers when I first picked up the car.

I do 80% highway and always get well over 500km to a tank (closer to 600 actually). Car is bone stock

Flagrum, I\'m quite convinced that most intakes on the market actually cause in increase in fuel consumption. My friend put a K&N drop in on his 3 and noticed a drop, my brother put one on his WRX and noticed a drop, and when I had my Civic I too noted a drop. This was NOT a result of driving the car more \'spirited\' since the addition of the intakes either!

[Flagrum_3]

Originally posted by TheProfessor

Originally posted by FLIPSPEED

Originally posted by SABIO


I wonder if I will get 500km on a tank if I do all highway?

I just got 525km all hwy. I remember getting those kind of numbers when I first picked up the car.

I do 80% highway and always get well over 500km to a tank (closer to 600 actually). Car is bone stock

Flagrum, I\'m quite convinced that most intakes on the market actually cause in increase in fuel consumption. My friend put a K&N drop in on his 3 and noticed a drop, my brother put one on his WRX and noticed a drop, and when I had my Civic I too noted a drop. This was NOT a result of driving the car more \'spirited\' since the addition of the intakes either!

Hey Professor, your probably right,...I\'ve never installed an intake such as the ones for our cars before...I guess I was thinking more exhaust systems, which by virtue of how it works should increase gas mileage.But looking at an intake and how it works...increased air intake->increased demand for fuel?...sounds plausible.


_3


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[TheProfessor]

Originally posted by Flagrum_3


Hey Professor, your probably right,...I\'ve never installed an intake such as the ones for our cars before...I guess I was thinking more exhaust systems, which by virtue of how it works should increase gas mileage.But looking at an intake and how it works...increased air intake->increased demand for fuel?...sounds plausible.


_3


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Yeah, that theory is pretty much my explanation for the increased consumption also.

[Skarbro]

Originally posted by TheProfessor

Originally posted by Flagrum_3


Hey Professor, your probably right,...I\'ve never installed an intake such as the ones for our cars before...I guess I was thinking more exhaust systems, which by virtue of how it works should increase gas mileage.But looking at an intake and how it works...increased air intake->increased demand for fuel?...sounds plausible.


_3


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Yeah, that theory is pretty much my explanation for the increased consumption also.

I don\'t buy into that theory. IMO, it does increase fuel effeciency. But it also increases the heavy-foot factor. The nicer sound and more power makes one want to step on the gas more.

[DrunknFoo]

Never paid much attention recently but a few tanks after my MS CAI install. My best averages are anywhere from 520-540km/full tank and a low of 450-470km/full tank. No real differences before/after, I guess it depends on the mood I\'m in while driving or if I\'m late for work or an event. =P

[majic]

aaahh.. here we go.. the never ending discussion ..

LEAD foot vs better air flow

[TheProfessor]

I suppose it depends how rich/lean the stock air/fuel ratio is. If in stock form there is already too much air then adding an intake (and thus more air) should cause the ECU to add more fuel thereby reducing your fuel economy. If on the other hand there is some unburned fuel then adding an intake should actually increase fuel economy if all else stays the same (i.e. heavy foot).

Did that sound at all convincing?

[majic]

Originally posted by TheProfessor


I suppose it depends how rich/lean the stock air/fuel ratio is. If in stock form there is already too much air then adding an intake (and thus more air) should cause the ECU to add more fuel thereby reducing your fuel economy. If on the other hand there is some unburned fuel then adding an intake should actually increase fuel economy if all else stays the same (i.e. heavy foot).

Did that sound at all convincing?

sounds right

[Kevin@nextmod]

I finally managed to get 470km a tank 100% city driving keeping it under 3k.

With the intake and exhaust i guess its pretty good considering i average about 390 a tank most of the time.

[SABIO]

I suppose it depends how rich/lean the stock air/fuel ratio is. If in stock form there is already too much air then adding an intake (and thus more air) should cause the ECU to add more fuel thereby reducing your fuel economy. If on the other hand there is some unburned fuel then adding an intake should actually increase fuel economy if all else stays the same (i.e. heavy foot).

Did that sound at all convincing?

Nope. Adding the Cold Air Intake does what it says... It allows cooler Air into the plenum. It does not add More Air.
Way to many sensors on the engine to let it burn more fuel than it should.

Cooler air is not exceptionally dense...compared to warm air....if it was...using your senario of more gas>cold air....during a nice hot 35C week... I should get 875Km on a tank of gas. LOL