okay, where do I begin on this one... I see your direction, but you aren't taking "physics" into account... you are not remembering the "work" part of the formula... and work is directly controlled by the amount of "force" required to move an object over a "distance"... so if you stomp the pedal you will see higher speeds within a fixed distance because your level of acceleration is increased, BUT reduce that level of acceleration over the same distance and you will require MUCH less power to accelerate to a lower speed over that same distance...

remember MPG has nothing to do with time... it is DISTANCE per ENERGY... so my point is that over the fixed distance you will use less energy... remember F=ma... the engine makes the F... the m is the "weight" of the car... and the a is the acceleration, reduce that number and your F goes down... therefore less gas...

I am not trying to destroy what you are saying, but be careful when you state fact and you don't have all the information that it takes to back it up... I am no stranger to physics, my degree is in mechanical engineering, I work with high horsepower applications for a living...

 

Yup!

Spomeone at the end of this thread mentioned driving habits. That is the #1 reason for mileage discrepencies.
I can drive hard, and get the mileage fown to 26-28 mpg. I can also have easy starts and no full pedal to the floor acceleration and get on the highway for 3 hours, and get 37 mpg.

It will vary on your driving Mood! It is also better to keep an average, because some pumps will click off and not fill as much as some others. As well as you may have a half gallon or so differenc between fill ups.

If you feel you are driving easy and still getting bad mileage, then ask your dealer to look at the car. Why not?

Good luck

Gary

 

Hi all. I orignially posted here about bad mpg. Since then, I've done some experimenting and found a way to improve my mpg.
What a pain in the butt!!!!
1) Coast, coast, coast. I got my foot off the pedal more and let the car coast a whole lot more. This was the biggest change and improvement.
2) Putt, putt, putt. The car is a cruiser, not a chaser. Its happiest puttering around at 25, 35, 45 and 55 mph. Anything above 65 got BAD milage. 70 was a stretch. 80 was a joke, you could see the gage fall every 10 miles.
3) Turtle vs. Hare. Slow and steady wins the race.

I really dont' like the fact that I have to baby this car so much. My old beater Escort would get 35 mpg even when I tore around in it, passed cars, drove 90 (CPH pretend you didn't hear that), etc. Too bad it blew the gasket.

Yeah, I guess I'm still having buyers remorse with this car. :?

 

Mileage figure for my first tank of gas:

276.3 miles on 8.8 gallons = 31.39 mpg

And I wasn't even trying. I often ledfoot it away from lights, blast down the on ramps, cruise the highway at 70-80 mph, etc. About half that driving was highway stuff. I'm running stock tires and have an automatic.

 

I was having trouble with the mpg on my box, ive had it for 3 weeks now have 1100 and am getting like 29 mpg and couldnt for the life of me figure out why, and than it hit me one day like a ton of bricks to the groin. I have a serious problem with my lead foot, the pedal is almost to the floor taking off from lights (dont usually go over 3500 but that doesnt matter) and on the interstate i average 80-85mhp unless traffic slows me down. So yeah, stop with the lead foot and dont have the rpms to high on the intertsate. another thing, this has nothing to do with this post. i know xb/xa have super small engines but they need 6 gears on the manuals. a little over 4 grand at 80 mph is kinda high, put in a 6th gear and bring it down to say 3 grand.

 

Either a 6-gear transmission or a less agressively geared 5-speed would do the trick. I realize they probably put a very short final drive in the car to make it a bit more "peppy" around town, but it is absolultely killing our highway gas mileage. Interstate speed limits in FL are 65-70...and we usually average 5-10 over the speed limit. Anyone traveling with me on the highway who isn't familiar with the Scion immediately says "Shouldn't you shift into 5th?". Heck, I even ask myself sometimes if I left it in 4th based on the rpms the motor is turning on the highway.

I wonder if this transmission is found in other Toyota models. Curious if there is a lower numerical final drive available. Not quite an easy installation, but worth it for those looking to optimize highway gas mileage.

 

Please remember that the Scion xb odometer reads about 4.5% too low. So your MPG should be adjusted by 1/(1-.045)=1.047, or 4.7% upwards.



See this thread for more discussion:

https://www.scionlife.com/forums/vie...976&highlight=

Phil [/url][/u]

 

the worst if gotten in regaurds of MPG is 29 - which was pure city driving w/ a/c in 85-95 degree heat...BTW, I usuallly shift at 4-5k

The best I got in regaurds to MPG was 40!! I went on a 180 miles trip- oh yeah, when I went to fill up- it only took 4.4 gallons!!

I average with mixed driving around 33-35

keep in mind people that the xB is only rated 31-35 MPG Manual. And the auto in 30-34 I belive. that is a crappy figure because other compact cars (2004 Civics) are rated at 31-38!!

Im not mad because my xB has style- and i got 40 MPG on my last road trip!! whoohoo!!

 

The reason that the more miles you get on the car the mpg's get better is because the car will run leaner. During the initial break in period they run the car a little richer so that everything will seat properly, and not overheat. After that period, the ecu will let the car run leaner. Also, after reading a few things about the ecu, the "i" in vvti is for intelligent, that means that it will learn the way you drive the car, so the more you drive slowly the better it will get over time.

I am not sure what my mpgs are. I drive mine on the week end. It is my play/toy car. I usually just cruise around town in it. I will drive it hard every once in a while. But I will say, I was not happy with the hwy mpgs when I first got it.
Hope this is a little better explaination.

 

the second tank ever to be run thru my xb got me 32 mpg. not to bad from what you guys are reporting.

 

If you look at your original window sticker for your xB, you will see that it lists the gas mileage in a range between 25 and 40 (in tiny print) with the average being 30 to 34 (big print).

As my mechanic told me and as I have experienced with my xB, you have to wait for your engine to "wear in" so your gas mileage will actually improve the more you drive your car.

Follow my trusted mechanics recommendations; I changed the oil and filter at the first 1000 miles to get all the metal chips and assembly lube out of the new engine.

I noticed a definite mileage increase at 3000 miles.

I now have 5000 miles and run Valvoline DuraBlend (a ½ synthetic ½ oil mix) and a TRD free-flow air-filter. I get a about 31MPG with “spirited” driving.

Not bad for a box on wheels with limited aerodynamics, eh?

:D

 

I've got about 5500 miles on my xB. The BEST mileage I have ever gotten was 28 mpg on just my last tank.........and I BABIED it like you wouldn't believe. I am generally a lead foot driver..............and driving like this for a whole tank was killing me. I accelerated slowly......never revved past 3000 rpm. Usually cruised at under 2000 rpm. If I was on the freeway.......I kept it at 65 mph. Man......this was torture. I seriously get very nervous when others are passing me........cause I'm usually the one passing them.

Now.....this 28 mpg was a HUGE improvement for me...........as my previous maximum had been 24-25. My average mpg was something like 21-23. My LOWEST mpg ever was 17. Obviously that was a LOT of redline driving. But, the fact remains that I have to excercise a very disturbing amount of self control just to get a MPG number that many of you consider crappy.

Hopefully my car just has some more breaking in to do. I'm sure the fact that the temperature is usually over 100 degrees here in Vegas doesn't help. The temp makes for pretty thin air.......and I usually have to run my AC. And perhaps it also doesn't help that I still haven't changed my oil filter.

KiL

 

I find that I am getting about 28 MPG - I have a MAJOR lead foot though and like to press the gas pedal :oops:

Of course, I think this is great because my 4-runner only got 15 MPG.................

If I could only get the lead out of my foot and put it into my @ss :?

 

Every 7th day....push it around the city...sorry boys i hate to say that....

 

Been tracking my mileage since day one on my xB. I've gotten a high of 34.192 babying the car for a tank and a low of 23.6 on my first tank. Overall, for the first 19 fill-ups (4087 miles) I've averaged 30.119. My driving is 400 highway miles a week and then probably around an additional 100 miles around town. I do think that I'd get better mileage if I didn't have such a lead foot on the highway (usually approx 80 or so). Compared to many cars on the market of comparable size, I feel that my Scion is giving me great performance.

Bontster

 

Things that effect gas mileage:


Tire pressure
Stop and go traffic
Using the A/C
Speeding
Rapid acceleration and braking


http://www.fueleconomy.gov/feg/drive.shtml

 

<<< Repost from other thread >>>


The Fuel Ionizer and Grounding Kit won't improve your gas millage. Neither will the
Tornado... http://autorepair.about.com/cs/produ...afpr052002.htm




Try a free-flow air-filter like the TRD Performance Air Filter
http://www.brandsport.com/trd-00602-17801-011.html

Or a Cold Air induction system
http://www.brandsport.com/toy-pts26-52040.html

And try switching to Synthetic Oil
http://www.allsyntheticsgroup.com/fuel-economy.html

And read these articles on "How to improve your gas mileage"
http://www.fueleconomy.gov/feg/drive.shtml
http://www1.excite.com/home/info/lea..._817_0,00.html

:D