Around 26-27 mpg

 

The only reason I keep the Fit is that it's far, far cheaper to keep than to replace at this point. The mpg / HP trade-off wasn't executed properly on the A/T Fit, especially when the AC is turned on. I've thought to sell and get a new M/T but with the economy, and don't want TPMS hassles ...

 

I don't understand why you would put more pressure in the rear tires. A Fit is extremely nose-heavy, so 40-42 psi front makes sense, but rear pressure should be lower than front, perhaps 36-38 psi.

 

Yeah, that is what I thought..once up 985 north of Gainesville, it takes a bit more to maintain 55 - 65mph. I am getting right at 33 avg myself.
Thanks for chiming in!

 

Thanks. How do you calculate it? Because I was trying to do that and didnt get the numbers. Here in PR most of the ppl dont know how to get that result.

 

take your miles driven divided by the gallons used.

for example, if you drove 300 miles, and then you fill up and your tank takes 9 gallons, do 300/9 = 33.3 mpg.

 

Thanks, even tho we use liters. But its good tho. Thanks again.

 

I am now posting my milage for the Fit on the EPA Fuel Economy "My Garage" website! https://www.fueleconomy.gov/mpg/MPG.do
This is a cool service where you can keep track of milage and "share" if you want...

Overall Avg. for 2770 miles 70-80% "country" (40-55 MPH) driving is 41.4!

Fill ups:

1. 37.5 MPG
2. 42.5 (427 miles)
3. 43.3 (407 miles)
4. 43.1 (402 miles)
5. 41.2 (385 miles)
6. 43.4 (384 miles)
7. 40.1 (337 miles) (hilly drive!)

These are calculated values from actual fill-up volume, approximately the same qty. at each fill-up NOT "milage gage" read-out (always 5-10% OVER actual calculation)! If you register with EPA "My Garage" you will see listings from other Fit owners, I think my 7 entries to date are most for anyone. I know the average is better than most - I am trying for best economy and the little car is responding!

• 36psi tire pressure is a key.
• I have just replaced the spare with a tube of "Tire Pressure Sensor Safe" Fix-a-Flat, that is about an 18 pound weight reduction...
• Am using the Honda "Milage gage" as a driving tool, trying to keep at or above the "50 bar" as much as possible.
• Also replaced the ugly "H" on the grille with a piece of black plastic, much more "aerodynamic" - this should boost milage significantly! Ha! Ha! (Seriously, this looks much better on my Black car!)

 

What strikes me as interesting at the Fuel Economy site is that the GE Fits, despite being heavier, bigger, and developing more power, are generally getting better gas mileage than the previous model. That's an impressive engineering accomplishment.

 

09 Sport, Bridgestones at 35 psi, 30 around town, 37 hwy. I'm raising the pressure to 40 and will report after that. I use cruise on the highway, around town I drive in an average fashion accelerating but watch ahead, coast toward lights in neutral from a ways off, etc. AC off when I can, but I will NOT be uncomfortable over a mile per gallon or two.

 

GE sport getting 36mpg avg. I only have about 2300 on the odo so im hoping itll get better as the engine fully breaks in. I want to really see the day where i can hit 40+.

 

I'm willing to be proved wrong, but I suspect that the best way to get good highway mileage without resorting to extreme hypermiling techniques is to start in D, then shift to Sport mode as soon as you get rolling, short shift to 5th, and then control speed with the cruise control, while keeping an eye on the instant mileage meter. I'm consistently getting 39 mpg at 55-70 mph with this approach; my wife, using automatic only, no cruise control, averaged 33 mpg on a recent trip.

 

Hello everyone! Proud owner of a new 2010 AT fit here and so far I am pleased with it over-all. I did not record mileage for my first tank as it was provided by the dealer with unknown fuel type and actual level.

My 2nd tank yielded a an MPG calculation of 28.8, which, to me, was a disappointment (even taking into account that I'm still in the break-in period). I've done allot of reading in the fitfreak and edmund forums and the MPG threads seem to indicate that most drivers are getting mid 30s to low 40s consistently in mixed driving.

I inflated my tires to 45.5 psi and that seems to have helped with an increase of approximately 3 mpg. I'm in the middle of my 3rd tank and I'm hoping to get at least 300 miles out of it.

What I don't understand is why the spread in actual experienced mpg is so wide - 23 mpg on the low end and 43+ mpg on the high end. Many people have even recorded high 30s right out of the gate on their first tank.

My suspicion is that this seems to indicate that the ECUs of these cars are being tuned by the manufacturer or dealer with dramatically different settings. I've read about the scangauge and software update to the mpg computer but neither of these appear to be actual re-programming solutions to tweek the ECU settings.

If certain people are getting mid to high 30s no matter how hard they drive their car (as some have noted), then there's no reason why the rest of us can't acheive the same results. Frankly, I don't believe that mere driving habbits, tire psi, ...etc are the primary factors causing this very wide spread.

Has anyone investigated the actual ECU settings of this car and how they can be optimized for MPG? Can this be done without depending on the dealer service dept?

Thanks in advance!!

 

Anyone have any idea why my car has better performance & more importantly better fuel economy right after I reset the battery? Shouldn't it be worse until the ecu relearns the maps and driving habits during the first 50-100 miles after resetting?

I had to disconnect my battery and reset the ecu after 5k or so miles due to a recent MAP sensor / vacuum issue - once I reset it, my fuel economy has jumped up probably 2-3 mpg from what I've seen this tank so far.

 

Someone on one of the eco threads rigged a switch to reset his ECU whenever he cut off his ignition while coasting..... I think that by doing this he was able to increase his fuel mileage ....I know I'm not much help but I will try to find out more by searching the older threads and see if I can direct you to it.

 

Sounds interesting. Thanks for looking!!

 

Factory shift points on the Honda AT are set too low. The Honda engine loves to rev, and is designed to do so. Max HP and torque are not reached until well above 4500 rpm. Shifting occurs around 3k depending on throttle position and engine load, well before the engine enters maximum efficiency. Most here advocate keeping low rpms for best gas mileage, which has been opposite my experience and against logic considering the performance of the Fit powerplant.
I have a 2008 Fit base AT. I consistently get 34 mpg in mixed driving, commuting 25 miles each way to work. If I manually shift my Fit at 4500-5000 rpms, my mileage goes up to 36-37 mpg every time.
Consider throttle position. Keeping the engine at lower rpms will require a deeper throttle position when climbing or accelerating because the engine is not working efficiently. This causes greater fuel consumption over allowing the engine to operate in the power band with a much shallower throttle position. A simple vacuum gage will show this.
Next tank of fuel, manual shift your Fit at 4500-5000 rpm WITHOUT going deeper than 50% on the throttle. I've done this test numerous times now and the result is always the same: more fun and better gas mileage.

 

This Christmas my wife and I packed up our new 2010 Fit with a 'trunk' full of luggage, gifts, and our two dogs (one big, one small) and headed out West to California. We left the DFW area with a full tank of gas and carefully plotted gas stops along the 22 hour route. We stopped at each gas stop to let the dogs run around and use the restroom...but they traveled very well otherwise. This is a breakdown of our MPG, which improved over time and greatly impressed me.

Stop Location / Distance Traveled / Avg MPG Displayed / Gallons used to refuel/ Distance/Gallons (calculated MPG)
__________________________________________________ _______________
Big Spring, TX/ 253.4 / 30.1/ 7.85 / 32.25

Van Horn, TX/ 221.9/ 32.5/ 7/ 31.7

Las Cruces, NM/ 167/ 37/ 5.73/ 29

Tucson, AZ/ 279.4/ 37/ 6.4/ 43.6

Blythe, CA/ 255.6/ 36.3/ 7.42/ 34
__________________________________________________ ____________
{The Return trip we took a slightly different route back}

Yuma, AZ/ 200.8/ 31.3/ 7.34/ 27.3

Tucson, AZ/ 237.1/ 32.4/ 6.5/ 36.47

Las Cruces, NM/ 261.3/ 33/ 7.8/ 33.5

Van Horn, TX/ 173/ 37.3/ 4.52/ 38

Big Spring, TX/ 222.5/ 38.4/ 5.53/ 40

Home/ 278.4/ 36.5/ 7.85/ 35.5
__________________________________________________ ___________
The Fit continues to impress me with its roominess, tight handling, quiet cruising ability, and phenomenal gas mileage for the money. Hope this real world MPG helps others when you plan for a trip in figuring what MPG you will really get. Between El Paso and Big Spring the speed limit is 80 mph so that was my speed and still got the BEST mpg of the trip. This car is fun and frugal. Best of both worlds! Dogs love it too

 

After supercharging my Fit a while ago, I've been getting average MPG per tank of 22-23, rarely if ever 24. This is with many short trips, lots of lights, socal traffic, boosting, ethanol gas, etc etc - but it was pretty consistent, 22-23 / tank

I switched out my O2/air fuel ratio sensor out for a new one, reset the ecu - here's the MPG for my very next tank of gas with the same driving conditions (boosting, traffic, short trips) : 26.8

This is my record tank of gas after getting the KWSC and is comparable to what I was getting before I got the supercharger. Also remember that this is the 1st tank of gas after replacing the O2 sensor meaning it probably won't be as good as it should be since the ECU was relearning driving habits and maps.

Long story short, I swapped out the O2 sensor for a new one and my mpg went up 4.8 instantly. Talk about something I should have done long ago.

Also, the MIL light was NOT ON for any O2 related problems or any other problems in fact. It has NEVER come on regarding the O2 sensor.

http://www.fuelly.com/driver/koi375/fit

 

We usually get between 32-34 with mixed city/hwy.

Just went to Canada and back and got almost 38, and I was doin 75 the whole way. Don't know how that happened, usually going over 65 hampers the mpg...