Fuel Economy

[petesimac]

This really cracked me up yesterday: I was watching The Goodbye Girl, a 1977 film, and in the film, one of the characters is describing a Subaru, saying that it gets 39 mpg hwy and 29 city! What!? Isn't it remarkable that 30 years ago, cars were getting essentially the same mpg that our Yaris gets now? You would think that in the passage of time that we would have figured out how to put together a car that gets 50+ mpg without having to resort to a hybrid engine. Unbelievable.

[stuffy]

for pete's sake

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guys cars r meant to be driven not pushed, i drive 110-120 and i still get great mileage, whats the point of buying a car if you will be driving it at 70 -90 on the highway, just buy a bus pass same experience. now dont get me wrong,to each his own , im not here to tell you how to drive, but i find some of you are taking this gas saving to an extreme. you buy a car for the conveinence , comfort and time saving , not to save on gas otherwise you would just need a bicycle , no gas used now thats a saving. That said enjoy your Yariss Echos and other awsome cars that dont guzzle that i think is enough also im not telling you to break speed limits and laws, just go with the flow. Thats my 2 cents (damn i wont have enough for the next fill up lol)

well, like you say, to each their own.

[stuffy]

i've heard people say that the fuel back then was more effecient and of better quality,

i have no idea if there is any merit to this theory, just throwing it out there.

[swng]

I think Marcus is right that our Yari are way more powerful than the 1977 Subaru, despite that the latter also enjoyed almost equally good fuel economy. In other words, if we compare engines back in circa 1977 with engines of today on an equal power output basis, today's engines should prove a lot better in terms of fuel economy.

In addition, I am not sure but chances are that though the 1977 Subaru enjoyed good fuel economy, it nevertheless did not have an ultra low emission engine and is therefore less environmentally friendly.

Also stuffy, though I am not absolutely sure, I believe as you indirectly suggested, fuel back in 1977 could probably produce more mpg, the main reason being the presence of lead content therein, which apart from anything else, like its effect on octane properties, is a lubricant(http://www.newton.dep.anl.gov/askasc...9/gen99615.htm). However, lead is not good for the environment. But that is another story.

[hystria]

right, it's all about the engine size and HP because actual cars weight way more than 30 years ago. but despite more powerful engines, nobody makes full use of it since people almost never drive past 4000 rpm. give me a 80 hp Yaris with a more nervous engine - I'll be happier with it

[Nigal]

Plus factor in that a 1977 Subaru was, is, and always shall be a cheap piece of shit. LOL!

[stuffy]

just achieved 41 mpg (us) on my latest tank, almost entirely highway driving, probably an average speed of 110 km/h.

something i just realized about this tank of gas was that it was premium 91 octane fuel, this is the first time i have used it and only did so because the station was almost out of gas and were offering premium at the same price as regular.

i was really surprised by getting 41 mpg because i made no real attempts at keeping my speed down and for big stretches of this trip i was probably going 120 km/h. before i crunched the numbers, i expected about 37 mpg.

i think i might try to fill up with 91 again and see how good it is around town.

i'll report back to my fellow fuel economy nerds.

[stuffy]

as i said before , cars that were made for 89 fuel dont burn the higher octane fully, therefore you kinda wasting your money and polluting. mind you your car will be awsome to drive , more pep it might even drop in revs, but all in all you wasting your moolah

well, i'm not sure i was wasting my money because the 91 was the same price as the 89, and it seems that my fuel economy was quite a bit better with the 91,
whether that's true and whether the added cost of the 91 would balance out the fuel savings, i'm not sure.

i know that there has been a lot of debate as to whether better fe is achieved with higher octane gas, and based on this one tank it seems to me like that might be the case,
so i'm going to waste about 3 bucks to conduct an experiment on another tank of 91.

[swng]

Latest tank since report in Post #1308:

Fuel Cost
$43

Distance travelled
587.8 km
365.26 miles

Fuel Amount
37.82 litres
9.99 US gallons
8.32 Imperial gallons
Cost of Fuel
$1.14 per litre
$4.3 per US gallon
$5.17 per Imperial gallon

Fuel Economy
6.43
litres per 100 km
36.55
miles per US gallon
43.9
miles per Imperial gallon

Mileage Costs
7.3154
¢ents per km
11.77
¢ents per mile

Comment: Mpg on the rise since a few tanks ago. Can be due to summer weather or my increased application of practical fuel saving techniques since the car was returned to me (NB: car has been driven by my brother for a while). See: http://www.gassavers.org/garage/viewgaslog/264? for historical chart.

[Merlinspop]

I haven't been too wrapped up checking my mileage, but so far during the first 2k of driving my Yaris, I've been very pleased. This fill up:

425.9 Miles
10.813 US Gal
39.388 MPG

Beats the crap out of the 15 mpg (barely) I got out of the Dodge Dakota I traded. Now I can afford to drive to work. Still don't wanna, but that's another problem I'm trying to solve in a similar manner.

[N9QGS]

I have the 2007 US model Yaris S with the 1.5, and I have gotten between 36 and 39 on most round the city some highway, on strict highway trips with one person I can get 42 to 43 mpg US. Im very please never gotten below 36 yet have over 29,700 miles.

[swng]

Brief follow up to Post #1376:
Got approx. 509.8 km (316.79 miles) with 35.787 liters (9.45 US gallons).
Translates roughly to 40.24 mpg (Imp), or 33.51 mpg (US), or 7.02 liters per 100 km.
Additional Info: Load = 2 people + some baggages most of the time. City/highway ratio was about 40/60. A/C used a lot during the tank. Tire pressure was 34 psi all around. Regular maintenance.
Comments: About average for me. Still comfortably above EPA numbers.

[slvryaris]

Same here 30,000 miles and nothing below 36 mpg. Maybe if I could drop some weight it would increase

[stuffy]

this chart has the lifetime fuel economy for my yaris, which is mostly city driven,
the low dips in the chart correspond with the winter time.

lifetime fuel economy of 33.4 mpg

90 day running average of 34.11 mpg.

[dallas]

Nice job on the chart, is that us gallon or imperial gallons? whats your litres per 100 km?



QUOTE=stuffy;109699]

this chart has the lifetime fuel economy for my yaris, which is mostly city driven,
the low dips in the chart correspond with the winter time.

lifetime fuel economy of 33.4 mpg

90 day running average of 34.11 mpg.[/QUOTE]

[marcus]

men that looks pretty bad...i always thought our yaris average is beyond or atleast 40 m/gal.. even with city driving...what am i missing here???

[stuffy]

well, my fuel economy is not the best, but you have to remember that most of my driving is short city trips.
this is the least ideal situation for fuel economy, especially in the winter when the engine runs cold and never has a chance to really warm up.

i could make some changes for improved fuel economy, but i'm just not super-obsessed with it and on occasion i like to run through the gears a bit more quickly than the average hyper-miler.

i think my numbers are in line with the revised american fuel economy numbers for the yaris.

also, i share this car with my wife and she doesn't know what hyper-miling is. :0

[marcus]

Originally Posted by stuffy

well, my fuel economy is not the best, but you have to remember that most of my driving is short city trips.
this is the least ideal situation for fuel economy, especially in the winter when the engine runs cold and never has a chance to really warm up.

i could make some changes for improved fuel economy, but i'm just not super-obsessed with it and on occasion i like to run through the gears a bit more quickly than the average hyper-miler.

i think my numbers are in line with the revised american fuel economy numbers for the yaris.

also, i share this car with my wife and she doesn't know what hyper-miling is. :0

by the way .. r u going to the meet tomorrow...markham city. warden and hwy 7 8ish p.m.