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Very disappointed in 2015 mpg ratings.

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  #161  
Old 06-20-2014 | 11:43 AM
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Originally Posted by mecevans
Unless your shuting the engine off while your coasting your using more fuel than coasting in gear.

All fuel injected cars cut off the fuel injector during coast and deceleration in gear.
They call that engine braking. Unless you need to stop (or slow down faster than gravity and wind resistance will achieve) then any kind of braking is bad for fuel economy. It doesn't matter if it makes your instant mpg look great, it's slowing you down and bringing your overall mpg down.
 
  #162  
Old 06-20-2014 | 03:42 PM
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Originally Posted by PaleMelanesian
Go ahead and push it a bit, but not so much that the rpm spikes up. What you want is fairly high throttle but low rpm. Somewhere in the 2000 - 2500 rpm range with as much throttle as you can convince it to allow without going higher. There's a sweet spot where you get the most power out of the fuel burned.

Relevant article: AutoSpeed - Brake Specific Fuel Consumption
Thanks for that reference article on BSFC. Very informative!
 
  #163  
Old 06-20-2014 | 03:59 PM
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Originally Posted by PaleMelanesian
Thanks for this enlightening article. BSFC is now stuck in the back of my mind when I drive from now on. Makes total sense. The graphs made absorbing the study results, encompassing.

PaleMelanesian - ya gotta have the title: "Resident FF MPG Guru"
 
  #164  
Old 06-20-2014 | 08:48 PM
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Originally Posted by 13fit
who the heck cares about power seats in budget cars?

whats next, a heated steering wheel and heated seats?

No manufacturer should be playing with luxury options in the cheap cars. Its what keeps them lightweight and peppy, while still being safe enough and pass the BS emissions that only 0.0003% of the world cares about
My cheap ass HHR has power seats!
 
  #165  
Old 06-20-2014 | 08:50 PM
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[QUOTE=mecevans;1244217]Unless your shuting the engine off while your coasting your using more fuel than coasting in gear.

I prove that wrong every day.
 
  #166  
Old 06-21-2014 | 08:23 AM
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Originally Posted by ROTTBOY
PaleMelanesian - ya gotta have the title: "Resident FF MPG Guru"
He's the FF MPG King. I'll never see his numbers unless I'm on a flatbed.
 
  #167  
Old 06-22-2014 | 09:59 AM
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[QUOTE=tmfit;1244274]I agree! Besides once you have the seat where you want it how often do you move it? I have power seats in my Dodge pickup, bought it new in 07 and havent moved the seat since I have owned it! Waste of money.

A power seat gives you a lot more adjustments then a manual seat does.
 
  #168  
Old 06-22-2014 | 12:50 PM
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Originally Posted by badyellowvette
A power seat gives you a lot more adjustments then a manual seat does.
A power seat does NOT necessarily give you any more adjustments than a non-power seat. It just gives you power to move the seat in case you're too helpless to do it yourself. AND THIS HAS NOTHING TO DO WITH THE TOPIC OF THIS THREAD!
 
  #169  
Old 06-22-2014 | 03:50 PM
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Originally Posted by Blade Shunner
A power seat does NOT necessarily give you any more adjustments than a non-power seat. It just gives you power to move the seat in case you're too helpless to do it yourself. AND THIS HAS NOTHING TO DO WITH THE TOPIC OF THIS THREAD!
Well my power seats have 8 way adjustments I don't think you can do that with manual.
I started the thread I'll talk about anything I want!
 
  #170  
Old 06-22-2014 | 08:57 PM
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8 way adjustment?

Up/down.
Front/back.
Recline/Un-recline.

What else?
 
  #171  
Old 06-22-2014 | 09:38 PM
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Originally Posted by mike410b
8 way adjustment?

Up/down.
Front/back.
Recline/Un-recline.

What else?
Some seats bottoms tilt
I had one car where the side bolsters could tighten ther grip on your torso.
They may be counting lumbar adjustments
And some manufacturers count the headrest up/ down forward backward.

I have had lots of cars with power seat adjustments and I typically disliked it because I can move the seat back and forth faster by manual adjustment. The only value that I see to power adjustments to seats is if the car has a memory, so that 2 people can each get the seat just like they want and then at the push of one button, the seat goes to their configuration. A nice luxury feature that does not belong on a Fit!
 
  #172  
Old 06-22-2014 | 10:18 PM
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On a 120 mile mostly highway trip today I got 42.2 mpg with ac on.
 
  #173  
Old 06-23-2014 | 12:56 AM
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Originally Posted by TCroly
I couldn't agree more, sometimes people get blinded in a quest for better fuel economy and the payoff once you have exceeded about 35MPG is very small



Great site for proving the point made above. Compare 38MPG to 42 MPG over 10,000 miles at $4.00/gallon, $100 savings. The same difference in cost is found by going from 20MPG to 21MPG over the same 10,000 miles.



It really is a point of diminishing returns. Sure 40MPG is better than 35MPG, but it really isn't that much better in the big picture.

But of all the gas powered non-hybrid cars, EPA HWY rated at 40MPG or more, I think the Fit will generally get better real world fuel economy than any of them. As proven by those, like me, who report their fuel economy on Fuelly - Track and Compare your MPG

I can see the facts on the calculator...

but can you PLEASE explain to me the logic of how in the hell this is possible lol

Been sitting here racking my brain about it and a 4mpg increase should be 4x as much as a 1mpg increase.....so help me out here please break it down to me like I'm a 5 year old lol
 
  #174  
Old 06-23-2014 | 01:48 AM
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Originally Posted by jdhommert
I can see the facts on the calculator...

but can you PLEASE explain to me the logic of how in the hell this is possible lol

Been sitting here racking my brain about it and a 4mpg increase should be 4x as much as a 1mpg increase.....so help me out here please break it down to me like I'm a 5 year old lol
The reason that a 4mpg increase from say 18mpg to 22mpg is much more of an increase from 38mpg to 42mpg is because the expession of fuel economy in miles per gallon is not a linear expression. The more miles per gallon, the less fuel used per mile. While that sounds obvious, to understand this, you have to turn the expression around to gallons per mile, or better yet, gallons per one-hundred miles, to have a linear relationship.

18 miles per gallon equals 5.55 gallons per 100 miles
22 miles per gallon equals 4.55 gallons per 100 miles
So this 4mpg increase saves 1 gallon per 100 miles

38 miles per gallon equals 2.63 gallons per 100 miles
42 miles per gallon equals 2.38 gallons per 100 miles
This 4mpg increase saves only 0.25 gallons per 100 miles
To obtain the same 1 gallon per 100 miles savings from 38mpg, you would have to get 61mpg
 
  #175  
Old 06-23-2014 | 02:40 AM
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From: Virden
Originally Posted by TCroly
The reason that a 4mpg increase from say 18mpg to 22mpg is much more of an increase from 38mpg to 42mpg is because the expession of fuel economy in miles per gallon is not a linear expression. The more miles per gallon, the less fuel used per mile. While that sounds obvious, to understand this, you have to turn the expression around to gallons per mile, or better yet, gallons per one-hundred miles, to have a linear relationship.

18 miles per gallon equals 5.55 gallons per 100 miles
22 miles per gallon equals 4.55 gallons per 100 miles
So this 4mpg increase saves 1 gallon per 100 miles

38 miles per gallon equals 2.63 gallons per 100 miles
42 miles per gallon equals 2.38 gallons per 100 miles
This 4mpg increase saves only 0.25 gallons per 100 miles
To obtain the same 1 gallon per 100 miles savings from 38mpg, you would have to get 61mpg
 
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