Fuel Economy

[marcus]

nah its all good as long as i get 500 km on a tank im happy..

[stuffy]

no, i would go but i've got plans.

[roadrunner]

I am really pleased with my Yaris hatchback 5 sp mileage.............

90 Day Running Average: 48.43 MPG(US)

date miles gals price comments mpg
07/11/2007 241.7 4.756 2.859 No highway driving. 50.82
07/03/2007 284.7 5.905 2.859 No highway driving. 48.21
06/25/2007 344.4 7.103 2.899 No highway driving. 48.48
06/14/2007 376.2 8.105 2.939 50% Highway driving.46.41
06/01/2007 219.0 4.502 3.059 No highway driving. 48.64
05/24/2007 312.4 6.408 3.059 No highway driving. 48.75
05/11/2007 207.5 4.225 2.939 No highway driving. 49.11
05/04/2007 329.6 6.749 2.899 No highway driving. 48.83
04/23/2007 234.6 4.901 2.799 No highway driving. 47.86

[petesimac]

Roadrunner, could you describe exactly what type of driving you're doing; are you hypermiling; how fast do you drive? Your numbers look suspiciously high. Why do you fill up after only a couple of hundred miles sometimes? Why, when you did 50% highway, was your mileage worse? How are you figuring your mileage? Just curious; not accusing you of anything. It's just that on a recent trip with my 5sp, going 60-65 mph the whole time on 99% highway, the best I could get was 46.5%, which was great, in my opinion. I just find it hard to believe that on a car that promises 34 mpg city, you are getting in the upper 40s to 50 mpg.

[roadrunner]

Originally Posted by petesimac

Roadrunner, could you describe exactly what type of driving you're doing; are you hypermiling; how fast do you drive? Your numbers look suspiciously high. Why do you fill up after only a couple of hundred miles sometimes? Why, when you did 50% highway, was your mileage worse? How are you figuring your mileage? Just curious; not accusing you of anything. It's just that on a recent trip with my 5sp, going 60-65 mph the whole time on 99% highway, the best I could get was 46.5%, which was great, in my opinion. I just find it hard to believe that on a car that promises 34 mpg city, you are getting in the upper 40s to 50 mpg.

Most of the miles on my Yaris are to and from work. My commute is 18.5 miles each way with 26 stop signs or traffic lights. My route is mostly rolling streets, and my commute is usually not at rush hour, but after it. My max speed is about 55 going down a long hill, otherwise it is 50 mph.
I am a hypermiler over at GasSavers.com, and have learned alot of tips. I do use a Scanguage II, a wonderful product, and worth its price.
Yes, my Yaris thinks it is a hybrid, for the mileage goes down on the highway.
The reason for that is going 60 to 65 mph, my mileage suffers, and there is nothing I can do, other than slow down, which is dangerous at times.
I use my trip odometer to show me miles driven, and the fuel pump to show me how many gallons I purchased, the rest is simple math, that is computed on GasSavers.com in the garage. This is my Yaris in the garage.
http://www.gassavers.org/garage/view/193
There are many reasons for my high mileage, and having a great route to and from work is a large reason, and so is driving off hours. I never use EOC, not for me.

[bnther36]

The price of gas dipped down so I thought that I top off my tank even though it was only half empty. For 179.4 miles I used 4.004 gallons for a MPG of 44.8.

I just put synthetic in it and my tires are right at 40 psi. I'm slow to takeoff and utilizing DFCO where ever I can; other than that no special tricks!

It's kind of rough here in Michigan where the speed limit is 70 mph. It seems like I do so much better on the back roads where I can set the cruise at 55 mph. I want to bump the tires up to the 44 psi max and I'm considering blocking off some the space in the grill for better aerodynamics. I'm a little leary of shutting of the vehicle at any time where it is still moving. We're still taking this a little bit at a time.

It's an awesome little sedan at any rate.

[BailOut]

We have our second 50+ MPG member! Congratulations!

[stuffy]

i also find your numbers a bit hard to believe roadrunner, especially when most of it seems to be city driving.

[Edd]

If there was a mistake, 50 MPG (Imp) ~= 42MPG (US)... Maybe he just ultralightened his car...

[eTiMaGo]

27MPG yesterday, got an extra 50km or so on the tank just by taking 2 much longer trips than usual

Also, I was using a 95 octane (equivalent to 91 RON in the US) ethanol mix fuel, which is quite a bit cheaper than pure 91, with no problems

[swng]

It is really that simple. Whoever paying attention to some simple rules will get some benefits in terms of fuel economy. The "simple rules" can be found in abundance in various places on this forum, including of course, this thread. The extent of the benefits may vary a lot though.
Come on fellow members! Enjoy fuel economy and you will find yourselves addicted to it!

[swng]

I hope to encourage posting and reduce confusion by posting my humble views below.
Recently I see more hypermilers post on this thread, which is very welcome. However, very obviously people who just drive their cars without using hypermiling techniques cannot get the kind of mpg numbers that hypermilers get. But there is usually a price to pay in one area or another when a hypermiling technique is used. For example, IMHO, a simple technique of inflating the tires to the maximum allowable pressure will improve fuel economy but worsen the ride, and the uneven tire wear that could result may actually give rise to a need to replace the tires earlier than usual for the car to be safe. See:http://www.wisegeek.com/what-is-tread-wear.htm. Sadly, frequent replacement of tires may not be good for the environment. Also, taking extraordinary measures to reduce vehicles weights may help. Yet many of the things that may be taken away from the car may have valid reasons to be there in the first place. Well, I guess I had better stop talking about such things as there is too much controversy.
I hope to see more fuel economy conscious Yaris drivers/admirers, including hypermilers, post their experience and thoughts here but at the same time, I hope readers of the thread i.e. you understand that hypermiling may not be for everyone. If you do not hypermile, may be getting, or slightly exceeding, EPA numbers in your daily driving should be something to feel happy about. Saving fuel without hypermiling still require techniques and one can find lots of hints and tips on this great forum. Needless to say, saving fuel is enjoyable, be that a result of hypermiling or otherwise.
From now on, when you come across a post (about fuel economy Of course) on this thread, it may be useful to first find out (from the contents and context of the post itself) if it is about normal day to day fuel economy or hypermiling in order to avoid confusing yourself.
In any case, I think it should be helpful to have some knowledge about hypermiling, however basic, in addition to general fuel economy. Whether to practice hypermiling is another matter. There are lots of information on the internet about hypermiling (http://www.google.ca/search?q=hyperm...ent=firefox-a). Here are two examples that I would recommend for a cursory reading if you do not have the time and appetite for a lot more:
http://www.answers.com/topic/hypermi...answertip:more
http://www.motherjones.com/news/feat...permilers.html
Happy posting everyone!

[petesimac]

That's great, Roadrunner; congrats on your excellent mpg!

I will say that I agree, somewhat, with Swng's last post; it might be helpful and clear up any possible confusion if those who are hypermiling post this fact when they state their mpgs.

[stuffy]

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

hey dallas, the chart is from gassavers.org, which roadrunner mentioned and the gallons are in u.s. rather than imperial.

my lifetime fuel economy is about 7L/100km.

[tacsniper]

do you guys fill up when the last bar starts the flash or do you drive it a bit more?

[eTiMaGo]

you should really refill even before the bar starts flashing, as the fuel pump in the tank uses the gas for cooling. If you run very low on fuel, there is a chance of the pump overheating, which is certaibly not a good thing

[Pavel Olavich]

For more information on HyperMilling, check out these sites, which are dedicated to HyperMilling:

www.gassavers.org

www.CleanMPG.com

If one drives "normally" theyr Yaris, paying no attention to saving gas, but just driving "normally" one will get in the high 20's and low 30's mpg at best. But if you are mindful about driving for saving gas, one will easily get mid to high 40's for hwy driving, and at least high 30's for city.

[Silver Streak S]

My Yaris has 715 miles on it. I just fueled up today for the 2nd time. I calculated my fuel mileage to be 40.33 mpg around town (no highway driving at all). I drive 21 miles each way to work with avg. speed probably around 45 mph. I have approx 15 stops for traffic lights. I'm not hypermiling but I try to be conservative (no jackrabbit starts, etc.). I'm very pleased so far. Will my fuel mileage increase as my engine gets broken in?