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This is coming from an old 2017 French article but I did not find it on the Forum and I think it provides an interesting data point that nobody would have enough patience to reproduce.

Journalists from Caradisiac drove an 2017 Ampera-e (Bolt EU equivalent) from 100% to 0% SOC on the Parisian Beltway at an average speed of 40 km/h (25 mph). Conditions that day where pretty good without much traffic and stop-and-go, allowing a nearly continuous constant speed. The drive lasted 16 hours straight (including restroom stops I guess). They achieved a range of 652 km (405 miles) and used 60.1 kWh of battery. Following the dashboard, that translates to an average 9.2 kWh/100km (6.7 mi/kWh).

Since the Beltway, by definition, is a circle, one might assume as a first approximation that the net advantage/disadvantage of wind was nearly canceled.

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I was getting this on my old 2017 but I sold it at 20k miles...Strangely my 2019 never got that much (more like 57kwh)
I always wondered it that was due to the 2019 having a USA assembled battery (and not recall until a month ago)
 

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I was getting this on my old 2017 but I sold it at 20k miles...Strangely my 2019 never got that much (more like 57kwh)
I always wondered it that was due to the 2019 having a USA assembled battery (and not recall until a month ago)
Naw. Luck of the draw. Our 2017 was always a runt. GM tried to say that 60 kWh was the center of the distribution curve on their LG batteries.

“The 57 kWh number on the battery label is the “rated energy”, a regulatory requirement that represents the absolute minimum energy content (under worse case scenarios), not the energy target. Accounting for typical statistical variation, LGE [LG Electronics] has been delivering the targeted 60 kWh of nominal pack energy”
 
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