When does the range prediction get more "accurate"?

[RickLightning]

Be careful using miles per kilowatt (i.e. This Trip, Trip 1, Trip 2). It can have problems where the miles don't reset, so your efficiency doubles. Or, for no reason, the efficiency zeros out and starts again, so your Trip 2 set on day 1 suddenly loses the efficiency, and shows what's in This Trip. EV driving history is close to useless due to inaccuracy.

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[AdmiralYamo]

I should ask... is a gas truck's range to empty accurate?

I bet the lightning is more accurate than a gas car.

Plus. No vehicle can predict what you will drive in the future.

 

[MM in SouthTX]

My EV driving history over the past 5,000 miles, according to the truck, is 2.1 mi/KW. When I charge to 100%, it still says 325 mile range for the ER. If it changed according to driving history it should guess that I will get something more like 260.

 

[MM in SouthTX]

The Guess o meter is never accurate even after thousands of miles. Your best bet is to use math (i.e., current state of charge multiplied by battery size multiplied by current mi/kWh)

^^This^^

When I hit the road, if I am worried about range, I am resetting one of the trip meters from time to time, and using that number and percent battery remaining x battery capacity to recalculate range.

 

[Alan168]

Between each charge session, I have closely tracked the changes in the odometer readings and GOM readings. I found at low temps, I could only rely on 63% of the range displayed on the GOM. As spring arrived and temps started climbing, I could rely on a higher percentage of the GOM range. I have seen 63%, 73%, 79%, 86% and most recently 93%. In other words, as the temps rose, the GOM range became more "reliable". Along the way my miles/kwhr rose from about 1.7 to 2.3.

Despite this apparent improvement, I agree with everyone else - use the battery SOC and calculate the remaining range.

 

[9onmy6]

I can drive the same route in similar weather conditions, same accelaration and braking, and get 1.9 kWh on one drive and 3.1 the next. Makes no sense.

Same. I just pay attention how much gas I left and miles I need. I hope battery percentage left is accurate.

 

[jerock]

If only ford would show is the KWH left in the battery. I use an OBD reader and car scanner & you know how much juice you have left. You can easily calculate what M/KWH you need to average to make it to your next charger.
No gas gauge compares with the accuracy using that calculation.

 

[jerock]

For a little less accuracy you can calculate the percentage of a full battery. 80% of 131 = 105 kWh x your average m/kWh to check your range.
105kwh x 1.4 m/kWh = 147 miles of range left.

 

[Gewalt]

SR owners have it a bit easier for mental math. 98 kWh useable is close enough to 1 kWh per 1% so 2.0 mi/kWh efficiency means a half charge will take you 100 miles; at 2.5 driving for highway efficiency that's a good 250 miles of highway range at 100%

On my first EV in 2015 there was a way to hide the GoM and I absolutely hid it until I sold the e-Golf six years later

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