Accuracy of the fuel economy computer - Lincoln MKC Forum
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post #1 of 12 Old 07-01-2017, 08:53 AM Thread Starter
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Accuracy of the fuel economy computer

Does anyone know if the fuel economy calculator in the MKC is really that accurate?
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post #2 of 12 Old 07-01-2017, 09:57 AM
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I reset one of the trip/fuel economy displays every time I fill up with gas and use the distance traveled and fuel consumption numbers to estimate the amount of fuel I will need to add and usually come quite close (within one litre in about 40 pumped). I find more error if there is a lot of inconsistency in my driving.

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post #3 of 12 Old 07-01-2017, 05:56 PM
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Try miles driven/gallons pumped. Be consistent and stuff equally each time. this will give you mpg or kmpg

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post #4 of 12 Old 07-02-2017, 08:20 AM
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Quote:
Originally Posted by sparkys72 View Post
Does anyone know if the fuel economy calculator in the MKC is really that accurate?
I reset mine with every fill-up and compare to a calculated MPG. The MKC MPG is usually right on the money on long trips. It seems like on tanks where there is more stop and go, or sitting in traffic, it is much less accurate - usually showing 1-2MPG more than a calculated MPG.
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post #5 of 12 Old 07-24-2017, 09:37 AM
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Agreed.

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post #6 of 12 Old 06-27-2018, 10:30 AM
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I use this Road Trip App on my iPhone during each fill up. After I fill up, I enter in the current mileage, how many gallons, how much I paid per gallon and then there's a drop down for the octane, gas station location and other options. Here's my screen shot. I have not found this app for Android, so when I got a new Google Pixel 2 phone, I didn't trade in my iPhone just so I could keep using this app.
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post #7 of 12 Old 06-27-2018, 12:59 PM
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I'm old school....I keep track of my mileage, and fuel costs manually and have ever since I bought my first car when I was 20 years old and I am now 59 :-)
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post #8 of 12 Old 06-29-2018, 12:22 AM
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FWIW I've recorded and reset the AVG MPG display at each fillup for ~53k miles since new. All my fillup data goes into an Excel spreadsheet to allow analysis. With 188 data points (fillups) to date:

Maximum (+) difference between display MPG and calculated (odo miles/pump gallons) MPG = 11%
Maximum (-) difference between display MPG and calculated (odo miles/pump gallons) MPG = 5%
Number of zero-difference data points = 18
Average difference over all data points = +2% (display MPG higher than calculated MPG)

One obvious 'error source' in this comparison is inconsistent fill-level at each fillup, though I try to minimize that.

This on a '14 Escape 2.0 EcoBoost ('single scroll' turbo) running 87 octane for the first 8261 mile, 93 octane thereafter. The Escape's sensors, instrumentation and calculating algorithms should be identical to a similar MKC.

Just FYI for the stats geeks.

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Last edited by Centex; 06-29-2018 at 12:30 AM.
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post #9 of 12 Old 06-29-2018, 12:33 PM
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I try to do consistent gas fill ups also i.e. stop filling the first time the pump shuts off automatically as per the owner's manual, but I have found that when I do that, the gas gauge does not always show a full tank even after I had the TSB performed to have the fuel sending unit replaced. Now after the pump stops the first time, I wait a couple of seconds, pull the trigger on the gas pump handle and fill until the pump stops for the second time. This seems to give a more consistent fill up.
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post #10 of 12 Old 06-29-2018, 04:44 PM
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^ Agree, that's been my fillup SOP for years.

Current Escape owner considering the '19 MKC Reserve
(looking forward to dealer arrival for a hands-on test)
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