i filled my box up b4 i left va and buy the time my light came on it 282 miles to the tank, thats pretty poor i think.

 

thats about what i get but i'm mostly city driving

 

If the light comes on with a gallon left in the tank, then you got 31mpg(282/9).

I normally do not let my tank get that low, but I have caclulating by taking miles/number of gallons purchased to get tank full. When doing this am averaging 33 to the gallon

 

Yea that is about what I get. I am half way through my gas and I am at 150miles. For some reason I expected it to be more since my Saturn gets the same mileage and I thought my Saturn sucked but I guess I never did the math.

 

If the light came on with 2 gallons left ( a number I have seens discussed here) that would be 28.5 mpg. If it came on with 1.5 gallons that would be 27.1 mpg. If it came on with 2.5 gallons left that would be 30 mpg.
Maybe.
The lights are not calibrated and would vary from car to car.

I assume you were driving all highway? If not then that's OK mileage. If it is then there are a few more questions.
Are you sure you really got it filled up? Gas pumps vary greatly at where they kick off. Sometimes you really have to work to get it filled with a sensitive pump.
Did you use cruise control? If you have one it can greatly improve your mileage.
How fast did you drive most of the time?
Is your xB modded? What wheels and tires do you have? Larger or smaller diameter tires can affect multiple variables.

I think it would be very helpful if gas mileage discussions used the same "factors". It would provide more accurate information and allow others to use the information to consider their own factors.

To that end I would suggest people try to provide more information and use a consistent approach to calculating and reporting gas mileage. I've already seen one guys go off and buy an Element because he was convinced there was not much difference in mileage.

First and most important point:
Fill the tank with the car as close to level as possible.
Drive.
Fill the car again with it level. (Be careful to get it fill the same way both times.)
Divide the miles shown on the odometer by the number of gallons shown on the pump. This is the only way to get a reasonably accurate mileage number.

Second list the factors:
Was this city driving, highway or a combination?
Did you use a cruise control?
If you were driving on the highway about what speed did you usually drive?
How would you describe your driving style?
- I take it easy mostly
- I drive hard sometimes
- My carpet is wearing out under my gas pedal
What were the road conditions? Anything unusual like driving in the mountains?
Do you have stock tires and wheels? If not what do you have?
Do you have any other mods that could affect your mileage?

If something like this could be followed it might help reduce some of the concerns about the mileage. Of course it could go the other way too......
Nevermind.

 

that's about what i get on a tank with city & hwy driving. if that was all hwy driving that isn't that great.

 

my light came on last night, and i had out 204 miles on it since my last fill up, and I can put between 9.5-10 galllons of gas in my car right after the light comes on. so i gues im getting roughly 20 mpg?

 

I dont wait til the light comes on. I usually fill up at the last quarter. Ranges around 190ish-200ish.

 

I pulled 330 once when I drove like a grandpa. Mostly 280-300. Driving 65 just seems sooooooooooo slow.

 

I log my mileage at every fill-up and average 33MPG on mostly highway driving at 65-75MPH. Last night's fillup at 336 miles was the most miles I've had at a fill-up. I think it was 10.33 gallons.

I keep my log in the back of that "Getting Started" Scion manual. There's a few lined pages for notes. I log date, gallons, price, miles and then calculate the mileage. You have to make sure you reset the trip odometer at each fill up so you're using the actually milage when calculating. Get the exact amount of gallons from the receipt. It's the only way to ensure accuracy.

 

I avg about 33 mpg..no matter what I do

 

Hey.. first time posting.. been lurking long enough.

Been getting between 30-37 MPG, average 33. The 37 was during the break-in period all on the Thruway. I think the break-in is a pain for 1500 miles if you speed, but is worth it.. especially for the looks in traffic.

pileofmonkeycrap's got a point, but try this. use the same gas station to fill up with and just until it clicks, no further, no topping off, etc. Reset trip, drive, fill until it clicks, calculate (with the 5% odo discrepancy).

 

it was highway, 60 the entire way, i dont usually wait till the light comes on but i wanted to see if i was gettin the claimed 35 mpg, maybe when i change to synthetic oil

 

Try one of the more accurate measurments suggested in my long rambling mess or maybe pileofmonkeycrap's or Scionic Librarian's shorter suggestions.
If you then find you are getting something like 25-30 under your described conditions maybe there is in fact something wrong with your car.
If your estimate is very close you are clearly getting significantly less than most others in those driving conditions.

 

Dudes I got 320 miles on 9.5 gallons of gas my last road trip
I filled up the BOX drove then filled up after I dropped the kids off
9.502 gallons for the re-fill Do the math 33.67 miles per gallon!!!
I was totally impressed, and average Interstate speed was 85 miles per hour

 

I am still getting, on average, around 36 MPG. Of course, I drive in SOUTH FLORIDA, with little to no hills. And I drive 'like grandpa', most of the time. Mostly drive in the city, between 35 and 40 MPH, and in the thirties, I have it in 4th gear, in the 40's and above, mostly in fifth.

I think that weight (as in what you got in the Box), makes a big deal towards your mileage as well.

You know, even if I was getting like 33, I would still be getting better then most SUVs on the road, and better mileage then my nBeetle gets. So I would not complain too much.

 

Estimating how much of a tank you used is useless. You've got to keep track of the ACTUAL miles driven and the ACTUAL amount of gas you put into it. For a true reflection, you need to find the average over several tanks of gas.

 

I think anything over 250 is GREAT i cant get anything higher and i have an intake and exhaust which is suppose to help and improve gas mileage

 

Are you talking to me? 'Cause I know that. I keep a log of miles, and gas...and what type I put in. Most of the time, MOF, I use the 'mid grade' of gas. Costs more, but it burns cleaner, and I think helps with the mileage.

 

Yup.
There's two more "factors" to be considered that make logical additions to my earlier list. Any of those can make some difference and TheScionicMan is very correct. Several samples will make sure you did not have something weird happen.

Quick short story to that effect:
The guys where I work tell about a guy there buying a new Dodge Omni back in the late 70's (I think that's the time). He bragged about the mileage he was going to get with this car before he even got it.
From the first day he drove it to work these guys were adding a little gas to his tank every day. He was going on and on about how he was getting over 40 miles per gallon!
Then after about a month of this, they started siphoning out a little every day. He was soon at the dealer complaining that his mileage dropped from 40+ to about 10 mpg.


The moral of the story is: If you are getting extremely different gas mileage than you expect don't rule out foul play. :twisted: