Fuel Economy

[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]

[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!

[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.

[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?

[swng]

Originally Posted by 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?

Good numbers!
Hopefully, you will get even better numbers as your car breaks in.
Although you are not hypermiling, you are paying attention not to waste fuel unnecessarily, if this is what you meant in your post. I think that is the main reason why you get reasonably good numbers. As I have been saying, anybody paying attention to F.E and fuel saving techniques will benefit to a degree.
Also, although you said you did not drive on highways, you did say that your average speed was around 45 mph, which I consider faster than the usual speeds we use in city traffic. So, it appears that you have not always been bothered by busy traffic. Also, you said that you drove about 21 miles each way to work, which should be considered a long but quite smooth, albeit non-highway trip. Although you mentioned that there were about 15 traffic light stops each way, you could have been using anticipatory techniques to avoid some traffic light stops some of the time, consciously or otherwise. I think all these contribute to the fact that your Yaris has returned more or less highway fuel economy.
Short trips and bumper to bumper traffic are very damaging to F.E.
I recommend this site to you. It is very practical:http://www.vehicleservice.co.za/calc/fuel.html. Unfortunately it appears that it uses Imperial gallons in its fuel calculator. However, the fuel saving tips in there are good. If you use them, you will not have to rely solely on the car's breaking in to bring you even better F.E.
Warm regards and safe and happy motoring!

[Silver Streak S]

Originally Posted by swng

Good numbers!
Hopefully, you will get even better numbers as your car breaks in.
Although you are not hypermiling, you are paying attention not to waste fuel unnecessarily, if this is what you meant in your post. I think that is the main reason why you get reasonably good numbers. As I have been saying, anybody paying attention to F.E and fuel saving techniques will benefit to a degree.
Also, although you said you did not drive on highways, you did say that your average speed was around 45 mph, which I consider faster than the usual speeds we use in city traffic. So, it appears that you have not always been bothered by busy traffic. Also, you said that you drove about 21 miles each way to work, which should be considered a long but quite smooth, albeit non-highway trip. Although you mentioned that there were about 15 traffic light stops each way, you could have been using anticipatory techniques to avoid some traffic light stops some of the time, consciously or otherwise. I think all these contribute to the fact that your Yaris has returned more or less highway fuel economy.
Short trips and bumper to bumper traffic are very damaging to F.E.
I recommend this site to you. It is very practical:http://www.vehicleservice.co.za/calc/fuel.html. Unfortunately it appears that it uses Imperial gallons in its fuel calculator. However, the fuel saving tips in there are good. If you use them, you will not have to rely solely on the car's breaking in to bring you even better F.E.
Warm regards and safe and happy motoring!

Swng,

Thanks for the feedback and the link to that web site. I kinda felt like I was more towards highway mileage based on my daily driving conditions. You confirmed my suspicion

[voodoo22]

Unfortunately the Yaris I purchased came with damaged paint, but I am getting a new one to replace this one. In the mean time I am very happy with my fuel consumption so far on this damaged Yaris.

I'm not going to get an accurate fuel mileage estimate with this car, because I'm not going to be keeping it long enough to fill up the tank when the dealer filled tank is empty.

I've got over 600km on the yaris now and still have 2 bars, I think it will be down to 1 soon, but still, if I had no gas I'm at 7 l/100km on a brand new car with:

The first 200km city driven with very little stop and go.
1 really slow 2 hour commute which usually takes 40-50 minutes A couple really slow hour plus commutes in the rain A little driving in Toronto downtown Use the a/c a little on one commute

I very, very rarely go over 100km/h and try to accelerate at a slow moderate rate, but this is still amazing to me. I only hope the car we get next week does as well.

I do try to shift into 3 or lower to coast to stops whenever possible, but I feel the gains here are very small on an automatic transmission. I also pumped the tires to 40psi to try and increase FE a little. I don't want to go much more than that as the tempreture can fluctuate greatly on the highway from 17 to 37 degrees from day to day and you can easily get a 10 degree fluctuation on a one way drive.

[jh3cuemd]

Yaris 3D 1.3.

I'm getting 60 Km/g (38 mpg) in city and 65 Km/g (40 mpg) in Highway.

I life in an city (Cuenca, Ecuador) which is at 2200 meters of the level of the sea.

I drive under regular conditions and roads, no modifications in my car, ocasionally use of the A/C, drive under 80 km/h in city and under 130 km/h in Highway, no special care in driving (like some strange technics I saw in last posts) (althoug I drive safe and responsably, and being a car lover myself I don't over rev the engine or abuse the brakes and clutch), regular oil change and care (only at Cuenca's Toyota Dealer Importadora Tomebamba which I think is the best), only premium fuel. The car is manual.

Before this car I had a Suzuki Alto 2003 (1.0L 67HP 16 VALVE), that car gave me an average of 75 Km/g (47 mpg) in city and highway, which I think it's truly great.

I think the mpg I'm getting with the Yaris are totally more than OK, I'm really happy with my car.

[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.

[Nigal]

For some reason the mileage is always higher when you fill it when it gets half empty. I don't know if the last half a tank goes faster or what?