I was hoping you fine Fitfreaks would post the brand of gas you use and the MPG that you are getting.

Dealer Fill unknown brand 36+ Mpg

Fill 2 AM/PM 34+ MPG

Fill 3 Chevron 32+

Fill4 Mobil 35+ Mpg

 

hrm, i got 400 miles on my fit, and my first tank was about 260ish..from the dealer fill up on some mom/pop gas station...i dont know if the car has to be broken in or what...but this gas mileage isn't what i hoped for....after the 500 mile point, i'm gonna refill, and if it's still that bad, i'm bringing it back to the dealer

edit: mine is a automatic and i did mostly city driving

 

come on folks help me out here

 

I don't thtink this is very scientific. I don't think the data you get from here will be of any use. It's too messy and could be driving style, location, and TOO MANY factors that play in.

 

Yeah, the stations/refineries sometimes [use] each other's gas. You might make a trend with a holy metric-load of data...

 

I agree with Gordio with the validity of your "research" of which brand of gasoline will offer you better MPG. Only a proper study, with elimination or control of all variables will provide results to form any sort of conclusive data. The major variable that is going to play is what type of driving are you doing and in what conditions (city versus highway driving; dry versus wet roads; accelerating mildly versus aggressively; cold versus warm climates, road grades/surface smoothness, etc. etc.)

Any comparison of yours versus someone else's will not give you any reliable idea into which "brand" of gasoline offers up better MPG ratings because of all the variablities that are possible.

If you are dead set that there are in fact wide variations in gasoline brands that offer up a great difference in the amount of MPG you would get I suggest doing the following:

Buy several brands of the same grade gasoline from several different locations (i.e. 87 octane from 3 different gasoline stations from 3 different locations - total 9 dfferent stations) and put into different containers (label say A, B, C, ...). Truck them out to a level surfaced area (such as an abandoned runway). Empty your fit's tank completely. Also I would suggest you do an oil and air filter change as well, to keep all variables of engine maintance to a minimum. Record air temperature and wind speed and direction at the beginning and end of each run you will make. You will also want to mark the distance of the runway and areas where you will start and stop at, with zones for deceleration (say 200 feet for each).

Fill tank with a predetermined amount of fuel (say 5.00 gallons) from Sample A. Start engine and let idle for say 2:00 minutes. Now engage first gear and accelerate to a given rpm (say 3000) and shift gears. repeat until you are in fifth gear and hold steady untell you reach the deceleration area and slow down steadily until you reach the stop line. Now turn off engine, put in neutral and push car around so you are facing the opposite direction. Now repeat with idle time and make run in opposite direction. When you reach the other end stop car and empty fuel out of car. Measure amount and refuel with Fuel B. Repeat until you have completed all runs.

Now since the distance is constant, you can just view the amount of gasoline you have left as an indication of which provided you with better fuel economy (The more fuel left over shows the better MPG versus other brands). Make sure that if temperature, wind speed , or wind directions changed that this may have had an effect on your data. You may want to repeat this several times and take the data to a statistician who can give you some neat graphs of means, medians, and standard deviations of all of your research.

After you have compiled all your data and have it put into nifty spreadsheets and graphs, I would suggest you take them outside, put them into a barrel with some of the gasoline you have obviously got on hand and burn them. Then take your car keys, get into your FiT and go to your local Honda dealership to realize you made a mistake and really wanted an Insight instead, because hey, you wanted a car built for MPG and not for its good looks.

 

I have been getting best fuel milage with Quick N Easy in Illinois