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Guest Message by DevFuse

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Register your Fusion Hybrid at the official Ford authorized registry here.


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Why your trip computer isn't accurate

EPA test is totally unrealist

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61 replies to this topic

#21 OFFLINE   lolder

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Posted 05 April 2014 - 12:39 PM

The Gen 1 FFH computed mileage is 4% too high but the odometer is 2% too low like in the Gen 2 for a net of 2% too high or about 1 mpg. That's pretty close but since they're all the same you know they could make it exact if they were reguired to. The Prii are much worse.


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#22 OFFLINE   ptjones

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Posted 05 April 2014 - 01:49 PM

The Gen 1 FFH computed mileage is 4% too high but the odometer is 2% too low like in the Gen 2 for a net of 2% too high or about 1 mpg. That's pretty close but since they're all the same you know they could make it exact if they were reguired to. The Prii are much worse.

How much off is your Gen2 FFH odometer? :)

 

Paul


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Current Record:  12/30/2014  902.2 mi.  63.8 mpg  14.13  gal. (Actual GPS:  922 mi.  68 mpg  13.5 gal.


#23 OFFLINE   hybridbear

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Posted 05 April 2014 - 08:35 PM

In theory? or do you have documentation that says that.  I ask because I have been unable to find absolute documentation of that or verification of that from the dealership.  I think this is a huge issue and I would love to find some definitive info .....  :)

See this thread http://fordfusionhyb...-discrepancies/

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#24 OFFLINE   hybridbear

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Posted 05 April 2014 - 08:37 PM

The Prii are much worse.


You're correct about that. The Prius reads 5-7% too high. Our Prius Fuelly lifetime is just over 3 MPG lower than the Toyota displayed lifetime in the car.

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#25 OFFLINE   acdii

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Posted 06 April 2014 - 09:45 PM

In theory? or do you have documentation that says that.  I ask because I have been unable to find absolute documentation of that or verification of that from the dealership.  I think this is a huge issue and I would love to find some definitive info .....  :)

This one was easy to prove out. The trip summary when shutting down and starting up after 10 minutes of remote start are identical.  I also went 1 week without remote start and one week with it and found an almost 2 gallon difference.


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#26 OFFLINE   timf

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Posted 20 April 2014 - 08:34 AM

Now that the weather has started to warm up, I've been able to better observe the under calculation of fuel used by my MKZ Hybrid. I haven't used remote start in over a month. For the first tank of gas while it was still relatively cold, the car was about 1 gallon lower than I added at the pump. The most recent tank has seen a greater number of 50+ degree days, and the car was only about half a gallon off from what I added at the pump. At least I finally got a tank of over 40 MPG on Fuelly, while the car has been estimating around 44 MPG.

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#27 OFFLINE   acdii

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Posted 20 April 2014 - 08:44 AM

Over time I noticed the difference gets smaller, though it will never be accurate.


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#28 OFFLINE   Fastronaut

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Posted 06 May 2014 - 05:14 PM

On a recent round trip to Florida from Maryland, I noticed that several times the Trip Odometer Fuel Used calculation used was up to 1.5 gallons less than I actually pumped into the tank.  No real pushing to multiple clicks.


250421.png
 
(HIS) 2014 Fusion Hybrid Titanium - Deep Impact Blue Metallic
  • Driver Assist Package (90A), Voice Activated Navigation (60N)
  • Active Park Assist (18C), Moon Roof (13B)
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Ordered: 10/28/13 | VIN assigned: 10/31/13 | Window Sticker: 11/13/13 | Actual Build Date: 11/21/13 | In-Transit: 11/23/13 | ETA: 12/14/13 | Arrived at CSX Facility: 12/05/13 | Arrived at Dealer: 12/09/13 | Delivered: 12/11/13
 
220431.png
 
(HERS) 2013 Fusion Hybrid Titanium - Ruby Red Metallic Tinted Clearcoat
  • Driver Assist Package (90A), Voice Activated Navigation (60N)
  • Active Park Assist (18C), Moon Roof (13B)
  • Adaptive Cruise Control (53B), WeatherTech FloorLiner All-Weather Mats
  • Trunk Cargo Net (96B)
Ordered: 11/06/12 | VIN assigned: 2/28/13 | Window Sticker: 3/28/13 | Actual Build Date: 04/06/13 | In-Transit: 4/17/13 | ETA: 5/07/13 | Arrived at CSX Facility: 4/29/13 | Arrived at Dealer: 5/02/13 | Delivered: 5/03/13 | Tagged: 5/06/13 | Major Failure in for Service: 5/13/13 | Lemon Law Replacement Vehicle Received: 6/17/13

#29 OFFLINE   acdii

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Posted 07 May 2014 - 08:49 AM

Last night, first click off, 10.88, trip read 10.83, .05 difference. I never top off either so thats where it was.

 

However, as I drove off, I looked at the gas gauge and it was 1/8th below full.   Confusing for certain, clicks off full, yet isn't according to the gauge. 


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#30 OFFLINE   jsolan

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Posted 07 May 2014 - 08:54 AM

Last tank was the only time I've ever had the trip computer be higher than what I actually filled up with.  The trip computer said I used 11.05 and after 2 clicks I only put in 10.9.  Normally I put in close to a gallon extra without any extra clicks.  Different pumps I guess...



#31 OFFLINE   acdii

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Posted 07 May 2014 - 09:09 AM

I filled at a different station last night too, and now that I think about it, these pumps fill faster than the one I usually fill at and completely forgot about that, so I did not get a full tank. 


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#32 OFFLINE   Fastronaut

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Posted 07 May 2014 - 09:44 AM

Last night, first click off, 10.88, trip read 10.83, .05 difference. I never top off either so thats where it was.

 

However, as I drove off, I looked at the gas gauge and it was 1/8th below full.   Confusing for certain, clicks off full, yet isn't according to the gauge. 

I've noticed that the innacuracy grows as you maintain higher highway speeds.


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250421.png
 
(HIS) 2014 Fusion Hybrid Titanium - Deep Impact Blue Metallic
  • Driver Assist Package (90A), Voice Activated Navigation (60N)
  • Active Park Assist (18C), Moon Roof (13B)
  • Adaptive Cruise Control (53B), WeatherTech FloorLiner All-Weather Mats
  • Trunk Cargo Net (96B), Heated/Cooled Front Seats (46B), Heated Steering Wheel (52A)
Ordered: 10/28/13 | VIN assigned: 10/31/13 | Window Sticker: 11/13/13 | Actual Build Date: 11/21/13 | In-Transit: 11/23/13 | ETA: 12/14/13 | Arrived at CSX Facility: 12/05/13 | Arrived at Dealer: 12/09/13 | Delivered: 12/11/13
 
220431.png
 
(HERS) 2013 Fusion Hybrid Titanium - Ruby Red Metallic Tinted Clearcoat
  • Driver Assist Package (90A), Voice Activated Navigation (60N)
  • Active Park Assist (18C), Moon Roof (13B)
  • Adaptive Cruise Control (53B), WeatherTech FloorLiner All-Weather Mats
  • Trunk Cargo Net (96B)
Ordered: 11/06/12 | VIN assigned: 2/28/13 | Window Sticker: 3/28/13 | Actual Build Date: 04/06/13 | In-Transit: 4/17/13 | ETA: 5/07/13 | Arrived at CSX Facility: 4/29/13 | Arrived at Dealer: 5/02/13 | Delivered: 5/03/13 | Tagged: 5/06/13 | Major Failure in for Service: 5/13/13 | Lemon Law Replacement Vehicle Received: 6/17/13

#33 OFFLINE   ptjones

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Posted 07 May 2014 - 02:14 PM

There seems to be a correlation between getting better gas mileage and trip gauge and actual gallonage being closer to the same. I just got my first  700 mile tank this year and it was only .2th's off. All of my high mileage runs also within about .2th's. It is important that the car is level when fueling. :)

 

Paul


163299.png 600 Club

Current Record:  12/30/2014  902.2 mi.  63.8 mpg  14.13  gal. (Actual GPS:  922 mi.  68 mpg  13.5 gal.


#34 OFFLINE   acdii

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Posted 08 May 2014 - 08:00 AM

Well I am wondering if the switch to summer blend happened, this last tank is at 45 and I am starting to see 47 MPG where previously I was lucky to get 42. This morning was my best commute ever at 47.5. Supposed to hit 80 today so I pulled my lower stuffing out of the grill. Keeping the main cover on though since it is only going to be warm today and drop back to lower temps next week.  I need to get MyGirl cleaned up she needs it badly, and looks like I just might be able to do it this weekend. 


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#35 OFFLINE   corncobs

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Posted 08 May 2014 - 09:36 AM

I think you are right about the summer blend I also see higher numbers consistently. No commute for me today but I had a 50.5 result yesterday.

I agree on the cleaning up there have been a few light rain showers and she looks really dirty now.
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#36 OFFLINE   acdii

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Posted 08 May 2014 - 08:07 PM

48.8 on my way home, Really liking it


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#37 OFFLINE   hybridbear

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Posted 09 May 2014 - 07:25 AM

I only buy gas once a month so I'm hoping that when I fill up in a couple days that I'll get summer blend to improve fuel economy.


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252543.png167422.png


#38 OFFLINE   murphy

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Posted 09 May 2014 - 07:57 AM

I last bought gas before Christmas, 265 miles from home.  I still have a quarter tank.

;)


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#39 OFFLINE   tr7driver

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Posted 09 May 2014 - 08:23 AM

I last bought gas before Christmas, 265 miles from home.  I still have a quarter tank.

;)

One of the issues of driving the hybrid is the dirty windshield.  I have stopped at gas stations to wash it without buying gas.  I'm sure it drives the folks inside crazy as they watch to make sure I'm not doing a pump and run.


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#40 OFFLINE   murphy

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Posted 09 May 2014 - 08:31 AM

One of the issues of driving the hybrid is the dirty windshield.  I have stopped at gas stations to wash it without buying gas.  I'm sure it drives the folks inside crazy as they watch to make sure I'm not doing a pump and run.

You do realize that if you pull the windshield wiper stalk toward you the car will wash the windshield for you.

:happy feet:


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