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Hybrid Only MPGs


Energized
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This is a Trip Summary of MPGs in 100% hybrid mode, EV Later with no use of the plug-in battery.

 

Note that the Energy Use display truncates the last digit of the fuel used rather than round up or round down. The system does however use the entire amount of fuel used in the MPG calculation.

 

Actual fuel used was 1.079 gal for 50.4 miles = 46.7 mpg. 0.0 kWh of energy was used from the plug-in battery.

Edited by Energized
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Hi Energized,

 

Your numbers are encouraging... I was worried that my MPG's in Hybrid mode were too low. My problem is that I have not run the car exclusively in Hybrid mode and because the car lumps EV Only miles with Hybrid EV miles together, there is no good way to calculate the MPG's in Hybrid other than doing what you did. In any case, if the EV miles are separated completely from your numbers we are at about the same for ICE only miles. Your ICE only MPG's are rougly 26 which is what I have been seeing in mine as well (96.9 ICE miles using 3.49 Gal = 27.7 MPG).

 

Regards,
APM

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Hi Energized,

 

Your numbers are encouraging... I was worried that my MPG's in Hybrid mode were too low. My problem is that I have not run the car exclusively in Hybrid mode and because the car lumps EV Only miles with Hybrid EV miles together, there is no good way to calculate the MPG's in Hybrid other than doing what you did. In any case, if the EV miles are separated completely from your numbers we are at about the same for ICE only miles. Your ICE only MPG's are rougly 26 which is what I have been seeing in mine as well (96.9 ICE miles using 3.49 Gal = 27.7 MPG).

 

Regards,

APM

 

Hi APM,

 

For hybrid mode, the EV miles really shouldn't be stripped from the calculation.  Those EV miles were produced by the ICE and the fuel that went into the ICE.  None of the EV miles come from the plug-in battery in this mode.

 

What is different with the Fusion is the ICE doesn't just propel the vehicle via the engine like a regular car, the ICE also charges the battery.  The battery then provides EV miles via the  motor.  Therefore, those EV miles belong in the ICE column because they were generated by the ICE (by using fuel).

 

You can also track the MPGs while in hybrid mode by being in EV Later and using the Fuel Economy display, hold the OK button to reset.  

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Hi APM,

 

For hybrid mode, the EV miles really shouldn't be stripped from the calculation.  Those EV miles were produced by the ICE and the fuel that went into the ICE.  None of the EV miles come from the plug-in battery in this mode.

 

That's not entirely correct. The initial HEV miles after a full plug-in charge of the combined PHEV/HEV battery (6.5kWh/1.1kWh) come from the wall outlet topping off the HEV battery, not from ICE charging.

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  • 2 weeks later...

This is a Trip Summary of MPGs in 100% hybrid mode, EV Later with no use of the plug-in battery.

 

Note that the Energy Use display truncates the last digit of the fuel used rather than round up or round down. The system does however use the entire amount of fuel used in the MPG calculation.

 

Actual fuel used was 1.079 gal for 50.4 miles = 46.7 mpg. 0.0 kWh of energy was used from the plug-in battery.

 

Energized,  Was that 46.7MPG highway miles, city miles or combined?  Nice to see the Energi can hold its own against the hybrid numbers.

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That's not entirely correct. The initial HEV miles after a full plug-in charge of the combined PHEV/HEV battery (6.5kWh/1.1kWh) come from the wall outlet topping off the HEV battery, not from ICE charging.

 

So if what you are saying is true, This test repeated after the battery is depleted and the gas engine kicks on should return a lower result.  Energized, or anyone else willing to try this to compare?  To be truly fair, the test should start and end with the battery depleted.

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When commuting, the morning trip will usually start with a full charge but operating in hybrid mode should then vary the HEV SOC between the usual 25%-75% with the ICE kicking in to build it back up within that range. Doing a test with the battery initially depleted would be more indicative of the return trip MPG when you can't plug in at work and EV+ activated as you approached your place of work in the morning, draining the HEV battery. All things equal, the morning trip MPG should be slightly better.

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So if what you are saying is true, This test repeated after the battery is depleted and the gas engine kicks on should return a lower result.  Energized, or anyone else willing to try this to compare?  To be truly fair, the test should start and end with the battery depleted.

 

This was on my commute home with a depleted battery. 

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I don't think EV later works very well.  On several occassions I have left the house with a full battery in EV later mode and had the battery range slowy decrease as I drove.  It may be that the battery range is being recalculated based on operation in hybrid mode.

 

The predicted range meter recalculates based on how you're driving and what kind of accessory draw you're using. 

 

I've seen the predicted range meter increase and decrease while in EV Later.  Its just reacting to current conditions.

Edited by Energized
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I also had a chance to try depleted battery hybrid on the way home from work. Since I went to lunch during the day, I completely depleted the battery. If the trip computer is to be believed, then I got 44.2 mpg driving mixed highway and city (60mph and 45 mph w/ many lights and traffic) over 10 miles, about 40/60% (Highway/City). I am very pleased with this as I was also running the air conditioning and it was about 89 degrees outside.

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