Murse-In-Airy
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The trip meter gives you a pretty good idea with some rounding errors. Some of us calculate ourselves based on EVSE input while charging versus miles driven. But then you’ve got charging loss to factor in and it can get even more inaccurate. Generally the trip meter is good enough for most.
Nklem
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The amount of KWh you get from your charger (Fordpass or meter on/in your charger/display on DCFC) divided by Miles driven. That's the real Mi/kWh. You should get around 10% less than what the car reports.
RockwallRick
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The Trip Meter works for me. I just wish Ford would fix the reset problem!
Nklem
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I think it’s supposed to work like that. 1 press miles only, 2 press or hold miles and mi/kWh resets. I have the latest software and it works the same way.
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timbop
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No, it's a bug. sometimes you have to press it 3 or 4 times to get it to actually reset the displayed mi/kwh to "99.9". If it doesn't reset the displayed mi/kwh to "99.9" then whatever value it is displaying is stuck there permanently and doesn't change.
timbop
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The problem with calculating it yourself from the FP or EVSE apps is that the EVSE measures power from the wall so doesn't account for the 10% or so lost due to inefficiency, and FP is so buggy it may or may not display an accurate value. The best way is to compute the kwh yourself based on the % of battery used which still may be off by a % or 2, but it's "close enough". The trick is knowing your battery size: ER is 88 or 91 kwh and SR is 68 or 70 kwh; it depends when you got your car and/or if you have the update that increases the usable battery size.
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