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Why hybrid and energi have the same mpg


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6 replies to this topic

#1 OFFLINE   rickke

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Posted 31 March 2017 - 05:50 PM

Energi is much heavier than hybrid. And big battery doesn't help mpg so much in gas only mode. Why energi still get the same mpg as hybrid? Thanks








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#2 OFFLINE   murphy

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Posted 01 April 2017 - 01:38 AM

The Energi can put a lot more energy back into the "big" battery during regen.  Someone used regen coming down from the top of Pike's Peak to completely recharge the HVB.



#3 OFFLINE   ClaveMan

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Posted 05 April 2017 - 08:12 AM

It's also math (I think)..

If a Ford Fusion Energi driver goes 20 miles on a full charge the gas mileage is Infiniti?

If they drive 1000 miles without doing any charging I would assume it is about the same as the hybrid?

With my 110 mile round trip commute (75% highway$ in my Ford Fusion Hybrid I get 40.5 electronic MPH (37 by pencil). What would I have gotten with an Energi? (Assume a full charge at the start of the commute). I would think about 10mpg better?

Edited by ClaveMan, 05 April 2017 - 08:22 AM.

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#4 OFFLINE   Gkinla

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Posted 10 April 2017 - 05:59 PM

My 2016 FFE got 40.4 mpg on a trip from Los Angeles to Lake Havasu City, with some side trips included. Arizona has 75 mph speed limits, everyone does 80. California out side of city limits is 70 mph, everyone does 75. I was very pleased with the 875 mile, 40.4 mpg trip. I used up the 5.3 KW by managing the battery. Highway speeds on EVLater, in city, EVNow until the drive battery was depleted. No charging on this trip, all hybrid mode after the battery was depleted.

 

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#5 OFFLINE   ClaveMan

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Posted 10 April 2017 - 06:40 PM

That's the math. You can't go very far on that initial 5.3 KW. The more you drive, the more a Ford Fusion Hybrid makes sense. If you actually write down the miles and divide by gallons you can knock your 40.4 down to 37.4 or so in the real word. Still very good efficiency.

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#6 OFFLINE   PA-Bucktail

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Posted 02 March 2018 - 03:06 AM

I just did a cost calculation at my current gas price of $2.65/ gal and my electric cost of 13.5 c/KWh
Drove 621 miles last month total cost was $0.052 cents/mile.
It is equal to 49.25 mpg in February in Pennsylvania.

#7 OFFLINE   jsamp

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Posted 17 May 2018 - 08:32 PM

It's also math (I think)..

If a Ford Fusion Energi driver goes 20 miles on a full charge the gas mileage is Infiniti?

If they drive 1000 miles without doing any charging I would assume it is about the same as the hybrid?

With my 110 mile round trip commute (75% highway$ in my Ford Fusion Hybrid I get 40.5 electronic MPH (37 by pencil). What would I have gotten with an Energi? (Assume a full charge at the start of the commute). I would think about 10mpg better?

 

Not sure what you're trying to convey there, but the gas mileage for an energi in hybrid mode does not include any electricity from the plug.  It is purely hybrid MPGs.  

 

As to why it rates the same MPG as the hybrid, murphy's reasoning is about the only thing that makes sense.  Not knowing the exact details of the official EPA test cycle, it is hard to tell if the bigger battery actually made that much of a difference, but it could have.

 

The weight difference is only 300 pounds which is significant, but not huge.  The rule of thumb is 1% drop for every 100 pounds, so at most it would affect MPG by 1.  Possible that the effect is less so on a hybrid.  The 100 pounds also affects lighter cars more than heavier ones, and Fusion is not that light to begin with.  It may be that it got lost in the rounding.  Hard to say.










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