Fuel Economy

[bnther36]

52 mpg !!!!


All I can say is WOW !

[Nigal]

Did you happen to list how you were able to achieve such results somewhere already? I didn't wanna ask if you'd already posted it somewhere.

I just filled up today and got an all time high of 40 mpg out of my tank. I swear with 29,000 miles on my sedan it's almost as if it's just breaking in. I picked up some Mobil 1 0W-20 for an oil change tomorrow and am interested to see if there's any increase.

[BailOut]

Nigal,

I am glad to see your enthusiastic interest and point you to my stickied thread in this forum, "Fuel Efficiency and the Yaris".

Enjoy!

[swng]

Originally Posted by swng

Latest tank returned about 41.78 mpg (Imperial) or 34.77 mpg (US) or 6.77 liters/100 km or 14.78 km/liter.
City/highway = 30/70. A/C was on about 20% of the time. Load was two people plus some belongings most of the time. Driving style: Synchronize with normal traffic.
Weather has been gradually warming up, and it must have helped a bit.
Last update is at Post #1145, Page 77.
Historical:http://www.gassavers.org/garage/viewgaslog/264

Filled up on 2 Jun 07 and the result was:

About 563 km traveled. Consumed 38.096 liters of fuel and used C$42.82 to fill back up.
Approximately 41.76 mpg (Imperial), or about 34.76 mpg (US), or 14.78 km per liter, or 6.77 liters per 100 km. I occasionally carried three passengers with their belongings, and the A/C was used about half of the time. Weather was good but warm. Driving style was - keep pace with traffic and be fuel economy conscious. No exotic measure used to save extra fuel. Other conditions similar to last report quoted i.e. Post #1201 at P.81.

This time, I used this free calculator (except for mpg (US)) which also contains a pageful of usual fuel saving tips:

http://www.vehicleservice.co.za/calc/fuel.html

For the mpg number in US gallon terms, I used the calculator provided free here:

http://www.gassavers.org/garage/viewgaslog/264

[naossoan]

ok I did a calculation last night when I got home.

I drove 565 Km on 34.something litres of gas. 87 octane
came out to 6.11 L / 100km or 39.something MPG.

Not bad!

Also, how many litres is the gas tank? 40? Seems right because the last time I filled up, the last fuel bar just started flashing and I put 36.5 litres in so 40 seems about right. I'm at work and don't have the user manual with me to check. can anyone confirm this?

[palsan]

Originally Posted by naossoan

Also, how many litres is the gas tank?

42L, 11.1gal (US), 9.2gal (imp.)

[GotYaris?]

Well my first 2 tanks of gas have gotten me approx 33.7 mpg...not exactly crazy about those numbers but I drive 35 miles one way to work and do anywhere from 65MPH to 75MPH, ac is off going to work and on coming home. I am going to take a highway trip from DC to NYC soon and see if it gets up into the 40pmg range.

[Nigal]

I was getting 34-37MPG when I first got mine but it slowly got better as I put more miles on.

[swng]

Originally Posted by Nigal

I was getting 34-37MPG when I first got mine but it slowly got better as I put more miles on.

Seems to be a common trend.

[ChinoCharles]

308.46 miles
7.365 gallons
41.9 MPG
95% city driving
Shell 87

[glxBoSS]

Wow... Impressive, maybe I'll get up to them numbers once I break my lil car in Charles.

[ChinoCharles]

I'm impressed myself. That is a 10 MPG increase from the first tank I logged on the car. I took on some driving techniques straight from the hypermilers and its working well for me. I'm not turning the car off while moving or anything. I'm smarter than that. What I am finding is that you can shift at 1500-2000 RPM in this car all day without having to use too much gas to compensate. As most of my driving is done in 35-45 MPH zones chocked full of stop signs, I find that when accellerating from a stop it is beneficial to give each gear until about 2000 RPM and shift. That puts you in second at 10 MPH, third at 20 MPH, fourth at 30 MPH, and fifth at 40 MPH. On my next tank I am aiming for 45 MPG. I have a couple mods on the way that may help me even further in my newfound quest to stick it to the Saudis. Stay tuned.

[Nigal]

I remember hearing that BMW did a study to determine at what RPM gets the best MPG and they found that shifting below rpm gets better than higher rpms. This last tank full I simply cut my speed by 10 mph; 65 from 75 on four lanes and 55 from 65 on two lanes. As of last night I had 300 and it just fell below the half tank mark. I drive a rout for work so it's the same every day. The strangest thing is that I still arrive at my destination at almost the exact same time as when I speed. I'll report back when I do my fill up and report my mileage.

[Racer X-8]

Originally Posted by Nigal

... The strangest thing is that I still arrive at my destination at almost the exact same time as when I speed. ...

Not so strange, for 2 reasons:

1. If you pass thru a series of traffic lights, they could be programmed and will stop you if you're over the speed limit. I could bore you with a long story about me versus a Greyhound bus that was in a hurry late one night,,, just believe it.
2. 10 miles @ 55mph = 10 minutes, 55 seconds. 10 miles @ 80mph = 7 minutes, 30 seconds. The 10 mile difference = 3 minutes, 25 seconds. Using "you" generically---> Now you have to ask yourself "Is 3-1/2 minutes worth it?" The answer to that should almost always be "NO". Heck, a visit to the restroom would use-up all of that. If you're late to get to work, would 3-1/2 minutes really matter that much? How about you leave home on-time and not try to make it up by driving dangerously. <--- Using "you" generically.

[ojo]

I've had my Yaris for a little over a month, and I have to say that I am very happy with my mileage so far. I got 34.5 mpg on the first tank and have gotten 35-37 since then. I drive 35 miles one way to work and drive about 70-75 mph. I definitely notice a difference in mileage when I floor it at a green light, but when I accelerate more smoothly and gradually, I can keep good mileage while still driving semi-aggressively.

[Nigal]

Originally Posted by Racer X-8

Not so strange, for 2 reasons:

1. If you pass thru a series of traffic lights, they could be programmed and will stop you if you're over the speed limit. I could bore you with a long story about me versus a Greyhound bus that was in a hurry late one night,,, just believe it.
2. 10 miles @ 55mph = 10 minutes, 55 seconds. 10 miles @ 80mph = 7 minutes, 30 seconds. The 10 mile difference = 3 minutes, 25 seconds. Using "you" generically---> Now you have to ask yourself "Is 3-1/2 minutes worth it?" The answer to that should almost always be "NO". Heck, a visit to the restroom would use-up all of that. If you're late to get to work, would 3-1/2 minutes really matter that much? How about you leave home on-time and not try to make it up by driving dangerously. <--- Using "you" generically.

[whine] Math is hard and stuff... LOL!

I've been trying to leave home about 5-10 minutes early to make the difference. One of the best things about driving slower is that I don't end up stuck behind the damn soccer moms in minivans going 65 in the fast lane.

[swng]

Originally Posted by Nigal

[whine] Math is hard and stuff... LOL!

I've been trying to leave home about 5-10 minutes early to make the difference. One of the best things about driving slower is that I don't end up stuck behind the damn soccer moms in minivans going 65 in the fast lane.

Very sensible friend!
BTW, I would take the opportunity and sidetrack a bit to mention that one of the safe ways to save fuel is not to follow the car in front too closely (aka tailgating). Whilst taking advantage of the draft created by the car in front is good when everything is on the move, tailgating, especially in city driving conditions, will usually result in a need to brake repeatedly and abruptly, and will prevent the use of good anticipatory driving techniques. Such are hardly good for fuel economy.

[leowhy]

Originally Posted by swng

Very sensible friend!
BTW, I would take the opportunity and sidetrack a bit to mention that one of the safe ways to save fuel is not to follow the car in front too closely (aka tailgating). Whilst taking advantage of the draft created by the car in front is good when everything is on the move, tailgating, especially in city driving conditions, will usually result in a need to brake repeatedly and abruptly, and will prevent the use of good anticipatory driving techniques. Such are hardly good for fuel economy.

unfortunately that is not possible in where i live... the traffic here is bumper to bumper situation...