I just picked up a used '09 Tuesday. Flew to FL from OH and drove it back. Watching the MPGometer had my hopes up...it was saying 44-45. But when I figured it, the 2 fill ups were 38.4 and 39.2. Still not too shabby considering it's rated at 33 hwy.

 

You will need to go to Honda Dealership and have them reflashed your cars computer so the mpg meter will provide you a more accurate reading. A lot of people here with 2009 Honda Fit's have done it. For the year 2010 Fits the bug were already fixed.

 

Sounds great! Thanks!

 

I believe that the 50+ MPG is possible on long commutes but not the average daily.

I drive a 2010 Fit AT, When I drive I average around ~28-30 mpg city + highway, no hyper miling techniques, just casually driving. When my BF drives it (i think he uses a few hyper miling techniques, he didn't even really know what it was till of late cuz he's into performance not really mpgs till I got a FIT, he just knew how to drive economically) he easily gets ~35-40 mpg. On a trip to Riverside, my bf averaged ~50mpg up and back on free-flowing traffic staying steadily around 70mph. (I dont have cruise base model ftl). He was telling me that the older hatchback civics with M/T could easily achieve 50MPG because hes gotten personal testimonies and I thought why not our newer better engineered Fits? He was saying something like if did some airflow upgrades and got a re-tune, 40MPG+ daily could easily be achievable if the old civics could do it.

As for gas: Chevron 89 Octane.

 

I tested the fuel economy on a 15 mile stretch of 101, the only section of highway that is both free-flowing AND flat near me (from Morgan Hill to just south of Gilroy). I was rolling at 60-65 with the A/C off.

I got 50.2 mpg for that stretch. That confirms my suspicion that it's the hills that kill it. Once I started into the hills in between Gilroy and Salinas, it dropped back to near 42 (39 is my usual with the A/C running)

I imagine that across a long, flat, rural highway, 50+ sustained would be fairly easy.

 

I agree. Hills kill it. I mean it IS a small displacement 4 cylinder so essentially its gotta use more power to climb the hills. I wanna see what a light modified fully economy tuned Fit can do.

 

i got 46.4 once and was regulary getting 40. I got a lot of negitive comments. all that happend with my base fit manual.
Now I drive a sport fit auto and have acheived 40 mpg once. Yeah 55 would be impressive. What do you usually get in the same circumstance?

 

Uh.... all engines have to use more power to climb the hills. I think what you're getting at is that the relatively torque-free design requires more frequent downshifts, pushing it out of the more efficient tall gears?

I always drive on the highway with the tranny in M5. I at least get some choice about the ratio, though the lockup will disengage and send the engine-speed higher (at 70, it'll jump from around 2600 to 3100).

That little highway experiment also gave me an opportunity to test something: At a steady speed, on flat land, jumping to 4th, even with the torque converter locked, caused a significant drop in fuel economy. At 70 in 4th, I'm running around 3500 RPM, very close to a 5MT Fit.

SO... here is my hypothesis:

The 5AT will outperform the 5MT on highway fuel economy if the speed is extremely stable and the terrain remarkably flat. The 5MT will shine if there are speed changes and grade variations, as it will never have a fluid coupling connecting the engine to the transmission.

 

Yea I meant higher displacement engines don't have to work as hard during speed changes and can stay at lower rpms.

I agree with your hypothesis though, it makes a lot of sense

 

Just done a 202 mile trip from Oldham (england) to Dalton-in-Furness varying from 60-70mph & just achieved an average of 52.5 mpg.
Not bad at all.
Fuel Gauge not even past halfway & i've already done 215 miles.

 

Is that an imperial gallon or a US gallon?

(and perhaps you know... why on earth does the UK sell fuel in liters, and report fuel consumption in miles/gallon?)

 

Imperial gallon !
And as for the other question ??

 

I beat you all... 17-21 MPG all time low of 15 MPG and first oil change at 2.4K *sigh* i know... i should have not bragged lol

 

I've been calculating MPG since I bought my 08MT using an iphone app called Road Trip. I lost my data when I updated firmware on the phone at one point, but I've been using it for about 10k miles since then with similar results.

I love it because it allows easy data entry, and shows me a graph of gas mileage and price, over time, along with some averages of things. I can also go back to see individual fillups over time. Very handy.

I get 34.71mpg on average, with a max of 43.9 and a min of 30.

The 43.9 was going 65mph on a 350 mile trip. My last fill was 36.09mpg, and was the same route except going 75. It's a dive trip I make fairly often, and sometimes I can leave gear at one end, other times I'm riding fully loaded. When fully loaded, with as much or more weight as if the car were full of people, going 75, I get around 34mpg. The last fill of 36 was with the car empty of all gear, occupied by myself and one friend.

I usually get 34-35 driving around town, which is 50% on a 35mph road with few stops, and 50% on highways going 60-70mph.

I love this car!