How does the EPA determine range and MPGe??

I have a 2019 Ultimate which now has 45.000 km on the odometer. For the first 3 years and about 36,000 km of driving, I kept detailed records of charging costs, actual observed kWh/100km and so on.

Putting aside brutally cold temperatures my experience is that driving conditions rule. The Kona (and likely all EVs) really shines in stop and go summer city driving. With the sun roof partially open and one rear window partially open, there is very comfortable air circulation and no need for AC. I typically observe consumption between 10 to 11 kWh/100km. On one occasion I started at 100% and drove in city traffic for 550 km until Turtle Mode kicked in at less than 5% SOC. Compare that with continuous high speed driving at 120 km/h where it may be necessary to keep the windows closed and use AC (due to noise level). With this kind of driving, the summer consumption is at least 18 kWh/100km, or more if there is a headwind.

When it gets brutally cold, say colder than -25 Celsius, all bets are off. It is often better to stay home. I once observed a consumption of 34 kWh/100km when highway driving at about 105 km/hr on such a cold day. Couldn't make it to my intended destination and had to turn back to engage a DCFC.

Just thought I would add my 2¢ worth on the subject of electricity consumption.