Your foot is heavier than you think.....

Use less gas pedal, coast more, brake less, and like majick, you'll start using less fuel.

 

I'll post this here as well....Just had the software update done. I had to read the TSB number to the dealership who then looked it up...He questioned me if my FIT was effected by the TSB. He read that it said "ALL" and made the appt for me with no problem

First fill up after correction and I'm glad to say that actual was 31 MPG and Meter was 31.1....Right on!

 

I'm not sure about this. I drive my fit like it's an Indy car. I love the sound of 6800 rpm and reach it at every chance possible. Yet, I have never gotten below 30 mpg actual. When I drive like a granny I see little improvement over the same stretch of road that I have driven aggresively over previously. I have to assume something is wrong with his fit or he drives stop and go. Even cruise control at 85 mph will yield 35 mpg.

 

I am not a lead foot but I don't mind letting loose some RMPs from time-to-time. After all, the reasons I bought this over the civic are cargo space and fun factor. Around where I live, there are plenty of winding roads with not much traffic where you can have some fun and use the gears.

So, my Fit only has 1K miles but so far, I've never had a tank below 33 mpg. I've never had a tank of all highway driving to report on but I had a few that were like 80/20 highway/town. I am getting 38-39 easy on those tanks (I drive pretty mildly on the highway…usually at 65 the whole time and keeping as steady as I can but I am in no way obsessive about it). I have no doubt that 40+ can be had on the highway with good, steady driving practices.

Disclaimer: I live in the burbs so I can get pretty good mileage around town due to favorable driving conditions. Still, it's hard to imagine that someone can average mid or low twenties with this car, but I suppose if the conditions are right (or maybe I should say wrong) …

 

Selden..I had the same experience with a Toyota dealership...lazy salesmen, who actually ran down their own Scion, because, according to them, only a few salesmen are authorized to sell them. When I bought my Fit, the expeience was great. I then went back to the same dealership to look at a Crosstour, and could not get any salesman to help me. I even stood by a car, tried to open doors, spent a long time looking it over..right in front of a crowd of salesmen shooting the bull. And I was the ONLY customer in the dealership! You just never know what these guys are going to do. My mpg indicator is now back to less than 1 mpg off. Pretty good. Still averaging 36.7 in city driving. (I get the same on highway driving, too)

 

I need to get moe doe mine is wayyyy off but it's always under lol it will say I got like 33 when I got like 38

 

crash,

slightly off topic, but do you find that your alternator can supply a steady amount of juice for your 1100w class D amp? i'm looking at picking up a JL Audio 900/5 so i was curious...

 

Your Fit can power that all day long. I have a 900 watt rms class d and 360 rms watt a/b - both cea 2006 compliant. Now that I've upgraded the grounding strap I barely get any headlight dimming except at idle. I have to say that amp seems a bit over priced though, you could get 2 dedicated amps for a lower price with more power but JL has always been on the expensive side.

 

Yes and better than other cars I have had my setup in there is no dimming of head lights and any other prob except I'm afraid my windshiled is gonna pop off when it hits lol I also am running a radar dector a gps and 4 neon lights all the time. The battery will last about 25 mins b4 it won't turn my car over anymore. The guy at the stero shop that helpe ne install it checke everything with a fluke meter and said it was all good and better than most cars he has installed in. But just FYI it's a major pita to get 4 Gage wire ran lol

 

thanks lyon, thanks crash.
... now back to the regularly scheduled thread

 

Ok so what's the step by step to get this fixed and what number do I tell the dealer to look up to get this fixed until I have resolved this issue. Not that I know there is a cure my fit is broken lol

 

this is the best thread, I think.

If your mpg gauge is reading consistently below what you calculate manually it's the first time I've heard this happen.

 

2010 honda fit bought new in February, has been within 0.1mpg every time I calculate

 

I've been manually calculating my tanks after the first 1000 miles I put on my 2010 sport, and the display has been consistently low.

Last tank was a good example. Display showed 33.2mpg, hand calculated at 33.8mpg. Not really far enough off, and if I'm getting that mpg I don't mind much really.

 

my MPG monitor is almost always too high but is almost always less than 1 mpg off.

last 25 tanks:
too high: 19 times
too low: 5 times
exactly accurate: 1 time

16 of the 25 times the error was less than 1 mpg.

 

Has anyone tried to have the software update done but told that it was already the latest version? I have a 09 fit sport navi and based on the past year's data, it is off by about 4.4 which for me is almost 15% off. I took it into the dealer and when they hooked it up, they said I already had the latest version installed.

The bulletin says that it should be updated to "37805-RP3-4050 or later". My documentation says that they saw that my car had "37805-RP3-A730". Seems odd since for mine it has a random letter in the last 4 group...

Any ideas?

 

Eh, it only seems random to you.

If you limit "version numbers" to only digits, then you get about ten times for each position (xxx gives about a thousand). But the moment you include letters, it jumps. If you know what hexadecimals are, that's 16 times per position. If you use the whole alphabet, it's 26. Letters and number is 36.

Are you assuming they're just using numbers? Cause it's already shown that they use letters in the middle.

While I can't speak for them, it is perfectly acceptable for letters to "come after" numbers... Meaning, you do have a higher version number.

 

that's way too much of an error.

are you measuring it after every tank of gas?

i'd ask them to update the software anyway.... or go to another dealer if there's one close by. because 4.4 is bogus

 

Look at TSB again under warranty claim info (and point this out to your dealer). It shows a failed (older) program code similar to yours. So appears your dealer is wrong and -A730 is not later than -4050

Have them update your software to most current they have on file and I bet your problem will be fixed.

_

 

Yes, I've had the exact same problem. '09 Fit bought late July '09. First tried to get the update in early July 2010 (first time the car had been to a dealer since I bought it) and told the computer shows the car already has the latest software rev. Tried again in March 2011 when the car was in for the LMS recall. Computer still shows no later software rev than the car already has. The dealer said they even spent an hour in contact with Honda but couldn't resolve it. My MPG meter has averaged 3.8 MPG high over 12,000 miles of driving.

I called a different dealer's service department, but the service manager there didn't impress me on the phone so I've just decided to live with the MPG meter being off. When people ask me how I like my Fit, I tell them I really like it but am disappointed that Honda can't correct the MPG meter.