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Hatchbacks Honda Fit Honda Fit Real World MPG
2438 messages, Last post on Dec 01, 2009 at 1:51 PM
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48.4 mpg for my first tank of gas using on board gauge Wow or what gives? Actual from mileage to gallons used was 37.5 mpg which is still a WOW. Base model five speed manual 80/20 highway/city. love my new fit. JAREW
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Replying to: jarew (Jul 22, 2009 8:47 am) I got an indicated 42.4 during a rather "aggressive" test drive session a couple of weeks ago. Even if that translates only to a real-world 34 mpg, it's still better than my Civic gets when driven comparably.
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Replying to: stephen987 (Jul 22, 2009 11:11 am) i have to think honda could remedy this, but too many drivers not in the know would have to face the reality that the mileage of the fit isnt as rosy as they think. |
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Replying to: stephen987 (Jul 22, 2009 11:11 am) Some of the disparity across reporters may be CPU versus real mileage--although I also noted before that I actually got 47.5 mpg over 280 miles on an interstate tank that involved a lot of drafting behind 18-wheelers doing 65 mile per hour. |
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A "Scan Gauge"can be corrected for errors. It takes a couple of tanks to get it "Tuned" to the car. When doing a fillup it will say how many gallons it thinks were used. The driver can input the correct amount according to the gas pump. It will also say how many miles were driven. The driver can can calibrate the Scan Gauge to the car's odometer by adjusting the indicated speed. For example the car is driven 100 miles according to the odometer. But the scan gauge says the car traveled 98 miles. That is a 2% difference and the gauge can be adjusted to reflect "+2" . Then the next time the car is driven a given distance, the gauge will agree with the odometer. Or pretty close as it also measures the fuel used when in reverse. Problem is, that odometers are not the most accurate of devices. So we really don't know if the odometer is more accurate, or the gauge. If we don't believe that, Next time on an X-way, reset the tripometer at a given mile marker. Drive a hundred miles and see how far off the odometer really is. Another, and even more accurate way, is to set a GPS for trip. It will tell us how far we have traveled as well as how fast we are going. That can be compared to the odometer and other devices. The differences folks are seeing may actually be the cars odometer, the cars trip computer or a combination of the two. The key for super accurate results, the fill ups must be done exactly the same way every time. Same nozzle setting, same pump, same car position, etc..And know how accurate the measuring devices actually are.  Kip
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Replying to: kipk (Jul 24, 2009 12:52 pm) So far, I've done 300.6 miles/9.06 gallons for a calculated 33.2 mpg on my very first tank, mostly in stop-and-go suburban driving on no-name gasoline. The gauge reading was 35.3. I'm looking forward to seeing how it does as it gets broken in more thoroughly. It's already significantly better than the '99 Civic it mostly replaces.
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Replying to: madams1 (Jul 11, 2009 3:24 pm) My almost new 09 Fit with manual trans gets in the low to mid 40's actual MPG corrected (thanks to my wife's careful driving), so you should not have to wait for it to break-in further. Assuming you: -have correct tire pressure (try at least 36 - 38 psi), -are not using ethanol gas (this could cause a 20 to 30% hit on MPG), -are not driving in a aggressive fashion (this could cut your MPG in half easily), -are not doing all stop and go traffic (heavy traffic is where the diesels and hybrids do well), -are staying under 70 mph most of the time, -are keeping the engine below 3,000 rpm as much as possible -are letting the car warm up completely (driving 10 minutes at a time will not warm up the engine/transmission and your MPG will be 15 to 20% or more low - Open-Loop in the computer) -don't have a leak or someone stealing your gas, -are getting into top gear with your automatic transmission (RPM at 60 mph?) -are driving in the "Drive" position (letting the automatic shift itself) and not the "Sport" position on the auto trans (and shifting with the paddle shifters at high rpm) -don't let the car idle for long periods (its OK to shut down at long lights) -don't get any error codes - I'm not sure if they would show a bad spark plug - but this would show as loss of power or rough idle. -have done the Idle Learn Procedure suggested earlier. -are sure that your hand brake (parking brake) is releasing completely -have tried driving 5 to 10 miles at 50 mph or more without using your brakes at all and then coasting to a stop (going up a hill helps), then feel your brake discs and drums (the discs and drums should be barely warm - if you can't touch all four of them without burning your hand - then that's the problem) -have checked your odometer against known accurate highway mileposts. -are calculating your MPG by Miles Driven/Gallons Used and not using the MPG gage numbers which are known not to be very accurate. Then I would try the following: See if you can buy or borrow a ScanGage II for your Fit. This is a digital readout unit that plugs into the cars computer system. The same unit works on most cars made after 1996 (with the OBD II computer system) One costs about $140 new, but if it fixes your problem it will quickly pay for itself in gas saved. The same Scan Gage will work on most modern cars so you can think of it as a tool investment and move it from car to car as needed. Or you can put it back in the box and sell it on eBay for $100 after you are finished with it. The ScanGage II will give you an instantaneous readout in gallons per hour for all conditions: idle, coast, cruise, full-throttle, etc. It will read water temperature (low temp equals low MPG). It can be adjusted to read instantaneous and average MPG within a few percent by entering a correction after each fill-up. This is the best way for the average driver to monitor MPG and fuel consumption plus it gives you a lot more information about the engine. It will indicate if you have correct Spark Advance (in general more advance will improve MPG until the engine starts to "ping"). It will confirm that the engine computer has switched to Closed-Loop operation as soon as it warms up (always in Open-Loop will hurt MPG). It will measure Intake Air Temperature (warm is good for mileage). It will show Battery Voltage (always high - above 15 volts - might indicate an alternator overcharging the battery, which might hurt your MPG). It scans the engine for any trouble codes and stores and reads out any found. This would allow you to confirm the dealer's analysis or discover any code problems that he may have missed. It has many other features but these are the ones that would be important for good MPG. See their web site for more information. Once you get it calibrated and working (it will take a few days to appreciate all the features) you will be able to determine and compare your results with other folks. I'll be glad to move my ScanGage from my Acura to my 09 Fit with manual transmission to give you some readings for comparison. If your ScanGage numbers don't make sense, then it may indicate computer problems as well, but I would expect the code readout to have shown a problem here. Good Luck! |
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| 09 Fit after 2 months and 3,000 miles: 40.7 mpg | |
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Replying to: tiff_c (Dec 07, 2007 1:11 pm) I do not have a lead foot. I have had the car tested 2x by the dealer, including checking pressure. The Fit Sport has alloy wheels. I have a regional managers phone number and this week, I will be calling and following up with a letter. I get 18-22 mpg with mixed driving, but little sitting at lights. I rarely use the a.c. I hypermile on downhill grades and at longer red lights. I weigh under 150. I don't carry bricks. Something is wrong with the car and that has nothing to do with the EPA and whatever vehicles they tested. The dealer says everything in the car is computerized and it reads out fine. I was told to change my oil (did) , I was told to "wait a while as the car breaks in." Now, am I supposed to wait until the warrantee runs out? I think not. I want to know what satisfaction anyone has received from Honda. Thank you all. |
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Replying to: fitfight (Oct 04, 2009 7:37 pm) I've seen that since then a few people have been quite detailed and helpful and I appreciate that. Fitfight, I'd like to know the name of that lawyer please. I will probably be in that class action lawsuit. So far I've called Honda customer service, they opened up a case for me, and they've told me I need to get a "fuel consumption" test from my local Honda shop. I tried twice to do this, and both times they rescheduled, or I drove all the way down there and they said they couldn't fit it in. I haven't been able to get it tested since I work and I can't afford to rent a car right now while they have some teenager drive my car around to test the mileage. I will probably take it to another dealer but that one is an hour away and so I'll have to take a day off work to take it there. I'll let you guys know the results of the test, and then what Honda said to me after I call them back with the results.
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