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Does the 2010 have the same MPG readout issues?

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  #21  
Old 10-19-2010, 11:51 AM
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Originally Posted by spets
How the heck are you guys doing in the low 40's while doing 70 on the highway. It baffles me.

I did a recent road trip to Houston and back (500 miles each way) while doing 75-80, and my calculated mpg was 32-33mpg. Cruise control most of the way. It was certainly not 36-42. I have a stock 09 Fit with 30k miles on it.
......

The Fit is a great car, but from an aerodynamic point of view, it somewhat resembles a brick. This may hurt mpg when you hit speeds around 80. Since I always concede the possibility I may be wrong, if anyone on this thread knows the Cx for the Fit please chime in. Most modern sleek sedans are around 0.28 or less.
 

Last edited by jelliotlevy; 10-19-2010 at 11:52 AM. Reason: typo
  #22  
Old 10-19-2010, 01:15 PM
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Originally Posted by be12nard
Every time when I am driving in the city, I can see the MPG readout decreases slowly and the only way the MPG go up is driving on freeway for more than 30 miles. I have been looking at the MPG readout while I drive. I just don't understand how can other Fit owners here claim to be able to get 37 MPG or above.

Is it safe for me to pump up my tire pressure to 40psi for front and rear without damaging the tires? My car is only a month old but I like to get more MPG as the purpose I bought this car.
I keep my tires at 36 psi to answer your question. Also keep in mind I live in central Ohio. We don't have hills here. The grade is pretty flat here until you go east (Pittsburgh) or South (Kentucky).

Example as you can see I was driving in upwards of 70+ mph. This was a freeway trip I took over two days...




Final mpg was right around 37 mpg when I calculated it.
 

Last edited by Committobefit08; 10-19-2010 at 01:27 PM.
  #23  
Old 10-19-2010, 01:26 PM
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Originally Posted by jelliotlevy
......

The Fit is a great car, but from an aerodynamic point of view, it somewhat resembles a brick. This may hurt mpg when you hit speeds around 80. Since I always concede the possibility I may be wrong, if anyone on this thread knows the Cx for the Fit please chime in. Most modern sleek sedans are around 0.28 or less.

Here has the 1st gen Fit as .35 cd.
http://ecomodder.com/wiki/index.php/...t_of_Drag_List
I've see some other places call it out as .29 cd for the 07 Fit Sport.

One reason I lowered my Fit. High speed stability and cross wind stability improved radically.
 

Last edited by Committobefit08; 10-19-2010 at 01:36 PM.
  #24  
Old 10-19-2010, 02:00 PM
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Always a good point to emphasize on here is the definition of highway and city.

Is highway an extended journey on an interstate highway signposted at 75, a mountain pass with steep grades, a straight 55 mph farmroad through Oklahoma? Does it involve slowing in small towns, or setting the cruise and forgetting?

City is tricky as well, given how suburbanized the country is. My dad defines "city" as a trip with a constant speed, 4 mile long, 50 mph leg at each end to take him to the edge of the main commercial zone. A Manhattanite would describe city driven far differently than an Angelino, or a dude living in a medium sized town in Illinois. People will call it "city" even if they regularly get up to highway speeds.
 
  #25  
Old 10-19-2010, 02:03 PM
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Fun food for thought - the Malibu is rates at 33 highway with a 170 hp 4-cyl, and it weighs 3400+ lbs and has a drag coef. of .35. Get the V6 and it drops to 29 hwy.
 
  #26  
Old 10-19-2010, 05:35 PM
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Originally Posted by Occam
Always a good point to emphasize on here is the definition of highway and city.

Is highway an extended journey on an interstate highway signposted at 75, a mountain pass with steep grades, a straight 55 mph farmroad through Oklahoma? Does it involve slowing in small towns, or setting the cruise and forgetting?

City is tricky as well, given how suburbanized the country is. My dad defines "city" as a trip with a constant speed, 4 mile long, 50 mph leg at each end to take him to the edge of the main commercial zone. A Manhattanite would describe city driven far differently than an Angelino, or a dude living in a medium sized town in Illinois. People will call it "city" even if they regularly get up to highway speeds.
Proof to the point - one size does not fit all. Been my gripe for a while. I'm in what I call a rural/suburban area. Little city driving on my normal drive cycle. My driving is split between this and highway driving. City driving to me would be a block by block traffic light's type driving. Bigger the city more blocks to drive through.

Irregardless - the MM in my 2010 gives accurate MPG numbers. I do trust it.
 
  #27  
Old 10-19-2010, 07:10 PM
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Originally Posted by jelliotlevy
......

The Fit is a great car, but from an aerodynamic point of view, it somewhat resembles a brick. This may hurt mpg when you hit speeds around 80. Since I always concede the possibility I may be wrong, if anyone on this thread knows the Cx for the Fit please chime in. Most modern sleek sedans are around 0.28 or less.
I can't find the fit, but the Versa and Yaris are .31 and .29 respectively.
Going up a class, the Sentra is 35, Corolla is .28
Up another class, the Altima is .30, the Camry is .28

Honda doesn't report theirs.
 
  #28  
Old 10-19-2010, 08:33 PM
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Originally Posted by Krimson_Cardnal
I need to keep reminding myself that it's not worth it to split hairs on monitoring the MPG. A host of variables get in the way.
Yup. I've been monitoring deviations between reported and calculated MPG for about 9000 miles on a 2009 Fit Sport that had the software update. Overall, the reported deviation is +0.3 mpg above calculated. BUT, the deviation range is from +7 to -6.9 mpg. It's very difficult to get consistent fills on the Fit, due to the extremely long path from filler to gas tank. If you are patient enough, you can generally squeeze in another 1-2 gallons after the first automatic shutoff by the pump.
 
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