Fuel Consumption (1 Viewer)

David Spade

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haha yeah i know different factors affect fuel consumption lol
thats why i like to average out my figures lol
not many 4wds will average 20L/100km lol

i could say falcons do 100L/100km haha
..
..
for a few seconds
 

seremify007

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Driving a heavy or powerful car in the city. It just takes soo much energy to accelerate all that weight over and over.
They're only good once you've got the momentum going. It's amazing how little petrol a small lightweight Getz or Micra uses in comparison.
 

Valeu

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I get 7ish/100km on highway, 9ish in the suburbs. That's in a 2.2L manual Camry, driving more or less normally.

"So, what wastes the most fuel?
I shall try to drive more frugrally.

I stick to main roads/motorways, so there isn't much stop/start going on. "

Generally speaking, lower speed is better for economy (70-90km/h is optimum for most cars), but not accelerating slowly to that speed. Engines are actually most fuel efficient under moderate/heavy load at lower engine speeds. They are at their least efficient at wide-open throttle (max load) as the engine protects itself from meltdown in these conditions by dumping extra fuel into the chambers. Engines are also relatively inefficient under light load conditions - when you are only pressing the accelerator a tiny bit, as the fuel energy is going more towards overcoming pumping losses in the engine than propelling you forward. That means if you drive a manual, accelerate fairly quickly (not fully) between gears, but keep the revs low. If you have an automatic, accelerate but try to keep the engine in as high a gear as possible.

Where safe, instead of maintaining a steady speed with light throttle (and therefore light engine load) 'pulse' up to a certain speed (using 50%-80% throttle) and then stick the transmission in neutral and let the car cruise along (better to do this iin a manual). When the car is starting to slow down, pulse up again and put it back in neutral (you can also turn the engine off during the glide stage). This technique helps increase fuel efficiency by reducing pumping losses, but can be dangerous and inconsiderate if in moderate traffic.
 
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seremify007

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I also find that accelerating moderately to the typical driving speeds (i.e. speed limits around 70km/h) and then leaving it on cruise control to be the most fuel efficient. Obviously other things like cancelling cruise control when approaching a hill (e.g. the bridge on Victoria Rd to the city) and letting off when approaching a red light so that you can accelerate lightly back to the speed limit again after it turns green also helps.
 

astroe

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Haaaa bump.

I've heard rumours that fuel consumption is much higher in the first few months of a new car, because the engine isn't tight enough? Or something to that effect.

Can anyone support/disprove?
 

seremify007

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Haaaa bump.

I've heard rumours that fuel consumption is much higher in the first few months of a new car, because the engine isn't tight enough? Or something to that effect.

Can anyone support/disprove?


Agree but I don't know the technical reasons behind it. Engines need to be run in and things need to be lubricated and what not before things get going smoothly.
 

Riet

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maybe for like the first few 100 km but not months, tolerances on engines nowadays are very good and it certainly isn't going to get any tighter after being run, if anything "looser" as friction wears parts down.
 

Bananaberry

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My car does 6L/100km. I have a 45L tank I think. 70% of my driving is freeway driving over 110km/h.
 

Billy420

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i Drive a sherman tank at this moment in time, it gets about half mile to the gallon.. but we have a lot of fuel to waste. Right?



yours sincerely,

Brondom Budz
 

Billy420

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i Drive a sherman tank at this moment in time, it gets about half mile to the gallon.. but we have a lot of fuel to waste. Right?



yours sincerely,

Brondom Budz
i totally agree.. spot on sir .. spot on
 

Sokolov

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you have to take into account the loss of fuel when your car is unattended as abbos desperately pry open your fuel tank for their great satisfaction of petrol sniffing.

bonus points if it is an azn/bogan/indian who spent $100,000 worth of upgrades to his supercharged WRX-8 with neon lights, 22" rims, carbon fibre hood, decals and other pointless shit
 

Ritard_

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you have to take into account the loss of fuel when your car is unattended as abbos desperately pry open your fuel tank for their great satisfaction of petrol sniffing.

bonus points if it is an azn/bogan/indian who spent $100,000 worth of upgrades to his supercharged WRX-8 with neon lights, 22" rims, carbon fibre hood, decals and other pointless shit
shut up fenris
 

seremify007

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lol u two know each other?

anyway... is anyone filling up early this wk to avoid the long weekend price surge? i'm filling up on my 98 tonight :)
 

rozymisty

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I was running out of fuel right before easter weekend, got it for 1.21 at an independent (freedom), down the rd there was a woolies for 1.20 wtih the discount and a huge line...wouldve been better to pay the extra cent lol.

I normally fill up when it gets to the 2nd last line, coz im not sure how long i got till it goes empty lol. But the other day i got past the last line and I got to 450km. Thats in a 1.8l corolla, lots of city/suburban driving, stop start, hills etc so yeah thats alright i guess.

I normally get to fill up Wed-Thurs for about $1.25-1.33.....depends.
 

seremify007

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I was running out of fuel right before easter weekend, got it for 1.21 at an independent (freedom), down the rd there was a woolies for 1.20 wtih the discount and a huge line...wouldve been better to pay the extra cent lol.

I normally fill up when it gets to the 2nd last line, coz im not sure how long i got till it goes empty lol. But the other day i got past the last line and I got to 450km. Thats in a 1.8l corolla, lots of city/suburban driving, stop start, hills etc so yeah thats alright i guess.

I normally get to fill up Wed-Thurs for about $1.25-1.33.....depends.
Pretty pricey for 91! 91 is usually around the $1.14-$1.17/L after 4c discount either along Victoria Rd (near Iron bridge). I aim to get my 98 for <$1.40/L. On occasions it spikes up to nearly $1.60/L :(
 

Azamakumar

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aahahahahahaha 99.3? how the hell did you manage that? redlining it and slipping the clutch so you rolled along at 1k?

EDIT: with cruise control on? lol
 

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